In today’s fast-paced, technology-driven world, a solar phone charger is essential. These devices enable you to recharge your electronic devices in an environmentally-friendly and convenient way.

In this article, we’ll look at the features you need to consider when choosing the best solar charger for your phone, as well as the advantages and disadvantages of this technology. We’ll also present a comparison of the best models available on the market.

1. Operation and features of a solar charger

How does a solar charger work?

A solar charger uses the sun’s energy to generate electricity. It is equipped with photovoltaic panels that capture sunlight and convert it into electrical energy. This energy is then stored in an internal or power bank, ready to be used to recharge a phone or other electronic device.

Features to consider when buying a solar charger

  • Power: The power of a solar charger is expressed in watts (W). The higher the wattage, the faster your phone will recharge. A wattage of 10 to 20 W is generally sufficient to recharge a smartphone.
  • Efficiency: Efficiency determines the amount of solar energy converted into electricity. A solar charger with an efficiency of 20% to 25% is considered efficient.
  • Compatibility: Check that the solar charger is compatible with your phone and other devices you wish to charge.
  • Battery capacity: If the solar charger has a built-in battery, take into account its capacity (expressed in mAh) to determine how many times you can recharge your phone.

2. Advantages of solar chargers

Ecological and economical

One of the main advantages of solar chargers is their ecological aspect. By using solar energy, you reduce your carbon footprint and help preserve the environment. What’s more, solar energy is free and inexhaustible, so you can save on your electricity bills.

Energy independence

A solar charger lets you charge your phone wherever you are, without having to search for an electrical outlet. Particularly useful when traveling, hiking or at outdoor events.


Some solar chargers feature multiple USB ports, so you can charge several devices simultaneously. They can also be used to power other electronic devices, such as tablets, cameras or speakers.

3. Disadvantages of solar chargers

Recharge speed

The recharging speed of a solar charger depends on the power of the solar panels and the amount of sunlight. As a result, it can be slower than that of a traditional charger, especially on cloudy days or indoors.


Solar chargers are generally bulkier and heavier than traditional chargers, due to the size of the solar panels. However, there are lightweight foldable models designed for easy transport.

4. Comparison of the best solar phone chargers

  1. Model A: This solar charger offers 15 W of power and 22% efficiency. It is compatible with most smartphones and has a built-in 10,000 mAh battery. It has two USB ports for recharging several devices simultaneously.

  1. Model B: This model offers 20 W power and 24% efficiency. It is compatible with many electronic devices and has no built-in battery, making it lighter and less bulky. It also features four eyelets for easy attachment to a backpack or tent.

  1. Model C: This folding solar charger boasts 10 W of power and 20% efficiency. It features a built-in 5,000 mAh battery and a single USB port. It’s ideal for those looking for a compact, easy-to-carry solar charger.

5. Care and maintenance


To ensure proper operation and extend the life of your solar charger, it’s important to clean it regularly. Use a soft cloth and soapy water to remove dust and dirt from the solar panels. Avoid using abrasive or corrosive products that could damage the panels.

Safety precautions

  • Do not leave your solar charger exposed to extreme temperatures, as this could damage the solar panels and battery.
  • Avoid bending or twisting the solar panels, as this could cause cracks and reduce their efficiency.
  • Do not attempt to repair your solar charger yourself if it malfunctions. Contact a professional or the manufacturer for assistance.

Frequently asked questions :

1. How long does it take to recharge a phone with a solar charger?

Recharging time depends on the power of the solar charger and the capacity of your phone’s battery. For example, a 15 W solar charger can recharge a 3,000 mAh smartphone in 3 to 4 hours, depending on sunlight conditions.

2. Do solar chargers work on cloudy days or indoors?

Solar chargers are less efficient on cloudy days or indoors, as they capture less sunlight. However, they can still generate electricity, although charging speed is reduced.

3. How to choose the ideal wattage for a solar charger?

To choose the ideal wattage, take into account your phone’s battery capacity and your needs in terms of recharging speed. A wattage of 10 to 20 W is generally sufficient to recharge a smartphone quickly.

4. Are solar chargers compatible with all phones?

Most solar chargers are compatible with current smartphones, but it’s important to check compatibility before you buy. Some solar chargers come with adapters for different types of connector.

5. Can I use a solar charger to recharge other electronic devices?

Yes, solar chargers can often be used to charge other electronic devices, such as tablets, cameras or speakers. Check the compatibility and power requirements of these devices before connecting them to your solar charger.


Solar phone chargers are an environmentally-friendly and practical solution for recharging your electronic devices wherever you are. They offer many advantages, such as energy independence, versatility and reducing your carbon footprint.

However, it’s important to consider the drawbacks, such as charging speed and bulk, as well as the features to consider when buying a solar charger. By following this guide, you’ll be able to choose the model that’s right for you.

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Solar self-consumption has become an increasingly popular topic, especially in France. The principle is simple: use the solar energy produced by solar panels to directly supply your home and thus reduce your electricity bill.

In this article, we will discuss the advantages of solar self-consumption, the different types of solar panels, how to optimize its installation and the subsidies available to facilitate the investment. Finally, we will answer the most frequently asked questions on the subject.

1. Benefits of solar self-consumption

Savings on the electricity bill

One of the main benefits of solar self-consumption is the reduction of the electricity bill. According to the ADEME (Agency of the ecological transition), a self-consumption solar installation allows you to save an average of 30% on your electricity bill. This saving can reach up to 70% in some particularly sunny regions.

Clean and renewable energy

Solar energy is a clean and renewable source of energy, which significantly reduces greenhouse gas emissions related to electricity consumption. Thus, by choosing solar self-consumption, you actively participate in the fight against global warming.

Energy independence

Solar self-consumption also allows you to acquire greater energy independence by freeing you, in part, from fluctuations in the market price of electricity. In addition, in case of a power outage, you can continue to benefit from the electricity produced by your solar panels if you have installed an energy storage system.

2. Types of solar panels

Photovoltaic solar panels

Photovoltaic solar panels are the most commonly used for solar self-consumption. They directly transform solar energy into electricity thanks to the photovoltaic effect. There are two types of photovoltaic panels: monocrystalline panels and polycrystalline panels.

Thermal solar panels

Thermal solar panels are less common for self-consumption, as they convert solar energy into heat and not electricity. Nevertheless, they can be used in addition to a photovoltaic installation to heat domestic water or to feed a heating system.

3. Optimization of the solar system

Orientation and tilt of the solar panels

To maximize energy production, it is essential to properly orient and tilt the solar panels. In France, the ideal orientation is due south, with an inclination of about 30°.

Dimensioning of the installation

The sizing of the solar installation must be adapted to the household’s electricity consumption. It is important not to oversize the installation, as this would result in additional costs without any real benefit in terms of energy savings.

Energy storage system

To optimize solar self-consumption, it is possible to install an energy storage system, such as a battery. This allows to store the electricity produced during the day to use it in the evening or during periods of low sunlight.

4. Grants and financial aid

Tax credit

In France, it is possible to benefit from a tax credit for energy transition (CITE) for the installation of solar panels in self-consumption. The amount of the tax credit is 30% of the eligible expenses, up to a limit of 8 000 € for a single person and 16 000 € for a couple.

Local aids

Some local authorities offer financial aid to encourage the installation of self-consumption solar panels. Contact your local council or region to find out what is available.

Zero rate eco-loan

The zero interest eco-loan is an interest-free loan to finance energy renovation work, including the installation of self-consuming solar panels. This loan can be granted for a maximum amount of 30 000 €.

5. Return on investment

The added value of a self-consumption solar installation depends on several factors, such as the cost of the installation, the savings made on the electricity bill and the financial aid obtained. In general, the profitability of a solar installation in self-consumption is reached in 8 to 12 years.

Frequently asked questions

1. What is the life span of a solar panel?

The average life span of a solar panel is 25 to 30 years. However, their efficiency gradually decreases over time. After 25 years, a solar panel usually produces about 80% of its initial power.

2. Do solar panels work on cloudy or rainy days?

Yes, solar panels work even on cloudy or rainy days, but their power output is reduced. On average, a solar panel produces about 10% to 25% of its maximum power on cloudy days.

3. What is the difference between full and partial self-consumption?

Full self-consumption means that all the electricity produced by the solar panels is consumed directly by the household, without being sold to the electrical grid. Partial self-consumption, on the other hand, means that the electricity not consumed is sold to the electrical grid, thus generating additional income.

4. Do I need to perform regular maintenance on the solar panels?

Minimal maintenance is required to ensure the proper functioning of solar panels. It is recommended to regularly check the condition of the panels and clean them if necessary to remove dust, dirt and debris that may reduce their efficiency.

5. Can I install solar panels on any type of roof?

Most roofs are suitable for installing solar panels, provided they are strong enough to support their weight and are oriented to maximize energy production. However, some roofs (slate, channel tiles, etc.) may require specific mounting solutions.

Also of interest:  Eco Adventure around the world in autonomy -Powertec


Solar self-consumption is an interesting solution to reduce your electricity bill, participate in the energy transition and gain in energy independence.

It is important to choose and size your solar installation carefully, taking into account the financial aid available and the specificities of your home. Do not hesitate to consult a professional to help you with your project and optimize your investment.

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Solar panels are booming. In this article, you will discover the main aspects to take into account when choosing, installing and making your solar installation profitable. We will also answer the most frequently asked questions about solar panels.

1. Different types of solar panels

There are mainly two types of solar panels: photovoltaic solar panels and solar thermal panels. The former transform solar energy into electricity, while the latter convert it into heat.

1.1. Photovoltaic solar panels

Photovoltaic (PV) solar panels are made up of cells that generate electricity when sunlight hits them. They are available in three main categories:

  • Monocrystalline: offer the best performance, but also the most expensive.
  • Polycrystalline: less expensive, but with a slightly lower efficiency.
  • Thin layers: cheaper and lighter, but with lower yield.

1.2. Thermal solar panels

Solar thermal panels use solar energy to heat a heat transfer liquid, which then circulates in a circuit to supply a heating system or produce domestic hot water. There are two types of thermal solar panels:

  • Flat panels: more common and less expensive, but less efficient.
  • Evacuated tube panels: more efficient and more expensive, but offering better insulation.

2. Choose the right solar installation

To choose the right solar installation, it is essential to take into account several factors, such as yield, available surface and budget.

2.1. Yield of solar panels

The performance of a solar panel depends on several parameters, including the technology used, the orientation and inclination of the panel, as well as the climatic conditions. On average, a photovoltaic solar panel produces between 150 and 200 kWh/m² per year in France.

2.2. Available area

La surface disponible pour installer des panneaux solaires est déterminante pour le choix de la puissance et du nombre de panneaux. Pour une installation photovoltaïque en autoconsommation, une surface de 20 m² suffit généralement pour couvrir une partie importante des besoins en électricité d’un foyer.

2.3. Budget

The budget is a key element in choosing the right solar installation. Depending on the technologies and powers chosen, the installation cost varies. For a photovoltaic installation, it is necessary to count between 1,500 and 3,000 € per kWp installed.

3. Install and maintain your solar panels

The installation and maintenance of solar panels are important steps to ensure their proper functioning and lifespan.

3.1. Facility

The installation of solar panels must be carried out by a certified professional. It is essential to comply with town planning and safety rules. A request for work may be necessary depending on the case.

3.2. Maintenance

Maintenance of solar panels is generally limited to cleaning the windows and checking the cables and fixings. It is recommended to have the installation checked by a professional every 4 to 5 years.

4. Make your solar installation profitable

The profitability of a solar installation depends on several factors, such as the cost of installation, financial aid, the price of electricity and the production of solar energy.

4.1. Aides financières

The profitability of a solar installation depends on several factors, such as the cost of installation, financial aid, the price of electricity and the production of solar energy. l’Agence nationale de l’habitat (ANAH) or energy bonuses.

4.2. Self-consumption and sale of electricity

The profitability of a photovoltaic solar installation can be improved by opting for self-consumption, which consists of directly consuming the electricity produced. It is also possible to sell excess electricity to an energy supplier at a preferential rate.

5. The environmental benefits of solar panels

The installation of solar panels contributes to the energy transition by reducing fossil fuel consumption and greenhouse gas emissions.

5.1. Reduction of CO2 emissions

On average, each kWh of solar electricity produced avoids the emission of 0.6 kg of CO2 compared to fossil fuels.

5.2. Reduction of dependence on fossil fuels

Solar energy is an inexhaustible and non-polluting resource, unlike fossil fuels. Adopting solar panels reduces our dependence on polluting energies and contributes to the development of renewable energies.

Frequently asked Questions

Question 1: What can be powered with a 3000 W solar panel?

A 3000 W solar panel can produce an average of 12 kWh per day. This production is sufficient to power the majority of electrical appliances in a home, such as lighting, television and household appliances.

Question 2: How much does 100 m² of solar panel cost?

The electricity production of a 100 m² solar installation depends on the efficiency of the panels. On average, an annual production of 15,000 to 20,000 kWh can be estimated. By selling this electricity at a rate of €0.10/kWh, this represents an income of €1,500 to €2,000 per year.

Question 3: What can be powered with a 3000 W solar panel?

A 3000W solar panel can power most household electrical equipment, such as lighting, appliances, TV, etc. Properly sizing the storage battery is important to ensure continuous power.

Question 4: Which battery for 3000W solar panel?

For a 3000 W solar panel, it is recommended to choose a battery with a capacity of at least 10 kWh, in order to store the energy produced during the day and restore it during the night or on less sunny days.

Question 5: How many solar panels for 9 kW?

The number of solar panels required for a power of 9 kW depends on the power of each panel. For example, if each panel has a power of 300 W, it will take 30 panels to obtain a total power of 9 kW.

Also interesting: Powertec portable solar charging


Solar panels are an interesting investment to reduce your energy bill and contribute to the energy transition. By choosing the right type of panel, optimizing the installation and benefiting from financial aid.

It is possible to quickly make a profit from your investment while having a positive impact on the environment. Do not hesitate to contact a professional to study the feasibility of your project and obtain personalized advice.

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The solar kit is gaining popularity in France and around the world because of its many benefits. It helps to reduce energy bills, reduce carbon footprint and achieve greater energy independence.

In this article, we offer a comprehensive guide to solar kits, covering the benefits, available options, installation tips and answers to frequently asked questions. Whether you are a homeowner or a professional, this guide will help you find the right solar kit for your needs and budget.

The advantages of a solar kit

1.1 Reducing energy costs

One of the main benefits is reduced energy costs. By generating your own electricity with solar power, you can lower your electricity bills and save a lot of money in the long run.

1.2 Energy autonomy

Another advantage of solar kits is energy autonomy. By producing your own electricity, you are less dependent on traditional energy providers and less vulnerable to energy price fluctuations.

1.3 Reduced environmental impact

You contribute to the fight against global warming by reducing your carbon footprint. Solar energy is a clean and renewable source of energy that does not produce greenhouse gases.

The different types of solar kits

2.1 Photovoltaic solar kits

Photovoltaic solar kits are composed of solar panels that convert sunlight directly into electricity. They are the most common and suitable for most residential and business applications.

2.2 Solar thermal kits

Solar thermal kits use the heat of the sun to produce hot water. They are generally less expensive than photovoltaic kits, but their energy yield is lower.

2.3 Hybrid solar kits

Hybrid solar kits combine the advantages of photovoltaic and thermal systems. They allow producing both electricity and hot water, thus optimizing the use of solar energy.

Choose the right solar kit for your needs

3.1 Evaluate your energy consumption

To choose the right solar kit for your needs, it is essential to evaluate your energy consumption. You can do this by analyzing your electricity bills over a full year and taking into account your electrical equipment.

3.2 Determining the required power

Once you have estimated your energy consumption, you can determine the power needed. To do this, divide your annual consumption by the number of hours of average sunlight in your area. For example, if you consume 3000 kWh per year and your region has 1800 hours of sunshine, you will need a solar kit with a power of about 1.67 kWp (3000/1800).

3.3 Taking into account local constraints

It is important to take into account local constraints, such as planning regulations, the orientation of your roof and the climatic conditions of your region.

Installing a solar kit

4.1 Preparing the installation

Before installation, it is essential to prepare the installation site. This includes cleaning and repairing the roof if necessary, surveying the building structure to ensure it can support the weight of the solar panels and obtaining the necessary permits from local authorities.

4.2 Calling in a professional

It is recommended that a qualified professional install it. This ensures a safe installation, compliant with current standards and optimized for maximum performance. In addition, some financial aid schemes require that the installation be performed by a certified professional.

4.3 Maintaining your solar kit

Regular maintenance is necessary to ensure the proper functioning and longevity of your kit. This includes cleaning the solar panels, checking cables and electrical connections, and replacing defective components.

Financial aid for the purchase of a solar kit

5.1 The tax credit

In France, the purchase of a solar kit can give right to a tax credit for the energy transition (CITE). This scheme allows you to deduct from your income tax part of the expenses incurred for the purchase and installation of the solar kit.

5.2 Local Grants

Some local authorities offer subsidies to support the installation of solar kits. These subsidies may vary depending on the region, department or municipality and are generally subject to certain conditions.

5.3 Aid from the National Housing Agency (ANAH)

The Agence Nationale de l’Habitat (ANAH) offers financial aid for low-income households wishing to install a solar kit. This aid is granted under the condition of resources and concerns mainly the improvement of the energy performance of the house.

Frequently asked questions

1. How much does it cost?

The cost of a solar kit varies depending on the power, the type of solar panels and the additional equipment. On average, the price of a photovoltaic solar kit is between 1,500 and 3,000 euros per kilowatt-peak (kWp) installed, excluding financial aid.

2. What is the life span of a solar kit?

It depends mainly on the quality of the solar panels and electronic components. In general, a good quality solar kit can last between 25 and 30 years, with a drop in performance of about 0.5% to 1% per year.

3. Can we store the energy produced by a solar kit?

Yes, it is possible to store the energy produced with batteries. This allows you to use solar electricity even when the sun is not shining and further reduces your dependence on the power grid.

4. What is the efficiency of a solar kit?

The efficiency of a solar kit depends on several factors, such as the quality of the solar panels, the orientation and inclination of the roof, and the local climate conditions. On average, a well-installed solar kit can cover between 30% and 50% of the electricity needs of a French household.

5. Can I resell the electricity produced by my solar kit?

Yes, you can resell all or part of the electricity produced by your solar kit to an energy supplier. To do this, you must enter into a purchase agreement with a supplier and meet certain obligations, such as installing a production meter.

Solar Station kit avec une promotion 599 euros

Discover also our portable solar generator : Powertec portable generator charger


In this article, we have provided a comprehensive guide to solar kits, including the types available, installation tips, frequently asked questions, and available financial aid. Whether you are an individual or a professional, this guide will help you find the solar kit that best suits your needs and budget.

The bottom line is that by going solar, you can not only save money, but also help protect the environment.

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External battery has become indispensable for our portable devices.

They allow us to keep our devices powered even when we are not near an electrical outlet. But how to choose the right external battery? What are the essential criteria to take into account? In this article, we will guide you step by step to find the right powerbank for your needs. We will cover the following points: understanding the functioning and the different types of external battery, determining the capacity according to your needs, identifying the technical criteria to take into account, choosing the right connectors and accessories, selecting the right size and design. Ready to go? Let’s go !

Understand the operation and the different types of external battery

Power banks are very practical products for recharging electronic devices in a mobile way. They come in a small box that can be easily carried in a backpack or pocket. They are usually powered by a rechargeable battery, which is recharged using a USB cable or a Lightning type connector.

There are different types of power bank depending on the type of battery used, the type of connector and the number of outputs. The most common external batteries are those using lithium-ion or lithium-polymer batteries. These batteries are very popular because they offer excellent durability and are relatively inexpensive. Lead acid batteries are also commonly used, but are less common because they are heavy and require regular maintenance.

Batteries can also be classified by the type of connector used. Power bank can have a standard USB connector, a Lightning connector for Apple devices, or a micro-USB connector. External batteries can also have a cigarette lighter socket for use in cars.

Finally, some batteries can have multiple outputs, which means they can power multiple devices at the same time. These external batteries are especially handy for travelers who need to charge multiple devices at once.

In conclusion, understanding how external batteries work and the different types of external batteries is essential to choosing the right external battery. Power banks  can be classified according to battery type, connector type and number of outputs. Lithium-ion or lithium-polymer batteries are the most common, but lead-acid batteries are also available. Connectors can be standard USB, Lightning for Apple devices, micro-USB or even a cigarette lighter socket. Some external batteries have multiple outputs to power multiple devices at the same time.

Determine the capacity of the external battery according to your needs

Once you understand how an external battery works and the different types of batteries, it is important to determine the capacity of the battery for your needs. Battery capacity is measured in mAh (milliampere hours). The higher the capacity, the more energy the battery can store and provide more runtime.

To determine the battery capacity you need, start by calculate the amount of overtime you need for your equipment. For example, if you have a smartphone that has a 5000mAh battery and you want to double its autonomy, you will need an external battery of 5000 mAh.

You can also calculate the capacity depending on how long you want to go without recharging your external battery. For example, if you want to use your smartphone for 4 days without having to recharge your external battery and you consume 5000mAh per day, you will need a battery of at least 20 000 mAh.

To compensate for the lack of possibility to charge your external battery when you are traveling or on the move, Powertec invented the first portable solar charger in 2008!
Thus, you will be able to recharge all your batteries with solar energy, clean and sustainable..

You should also consider the type of device you want to charge. Devices that consume more power, such as laptops, require a more powerful battery than low-powered devices, such as cell phones.

Finally, you should also consider the number of devices you want to charge at the same time. If you want to charge several devices simultaneously, you will need a more powerful external battery.

Taking these criteria into account will help you determine the capacity of the external battery you need to meet your charging needs. Once you have determined the capacity you need, you can then move on to the next step in this guide, which is to identify the technical criteria you need to consider when choosing your external battery.

Identify the technical criteria to be taken into account

Once you understand how external batteries work, the different types of external batteries, and the capacity you need, it’s time to identify the technical criteria to consider when choosing the right battery.

1 – check the power output of the external battery. This will give you an idea of how fast it can charge your device. External batteries generally offer an output power of between 5 and 30 watts. The higher the power output, the shorter the charge time.

2 –  check the charging capacity of the external battery. This is the amount of energy the battery can store and deliver to your devices. The number of mAh (milliamp-hours) listed on the package will give you an idea of the battery’s charge capacity. The higher the number, the greater the charge capacity.

3 –  check the connectivity of the external battery. You’ll want to make sure the external battery is compatible with your devices. Most external batteries are compatible with USB Type-C devices, but some are also compatible with USB Type-A and Type-B devices.

4 – check to see if the external battery comes with additional accessories. Some manufacturers provide charging cables, adapters for different devices and even carrying bags. These accessories can be very useful in allowing you to charge your device wherever you are and carry it safely.

Finally, check the external battery for water resistance. Most external batteries are designed to be water and dust resistant. You’ll want to make sure the battery you choose is waterproof to protect you from the outside elements.

By following these tips, you will be able to choose the best external battery to meet your needs. Be sure to research the technical criteria before making your decision, and don’t hesitate to seek advice from a specialist if necessary.

Choose the right connections and accessories for your external battery

Choosing the right connectors and accessories is essential to get the most out of your external battery. Connections are all the ports and plugs that allow your external battery to connect to your devices. Connections are very important because they determine which devices you can charge with your external battery. Most external batteries come with a USB port, but some models may also have more extensive connectivity, including USB-C ports, Lightning ports and micro-USB ports.

Power bank accessories are also very important. You may want a model that includes a charging cable, sync cable and even a protective cover. The best external batteries come with cables and accessories that allow you to charge and sync multiple devices. Some models may even have a built-in LED light that allows you to charge your devices safely in the dark.

The connectivity and accessories of your external battery can make all the difference between a satisfying experience and a frustrating one. Therefore, it’s important to take the time to choose a model that meets your connectivity and accessory needs. Finally, don’t forget that you can also purchase additional accessories if you need them.

Select the right size and design of external battery

The size and design of an external battery are criteria to be considered before making a purchase. They are determined by the type of battery, its capacity and its connectivity.

As far as size is concerned, it is important to choose an external battery that can be easily transported and that fits your device. There are different sizes of external batteries, ranging from small to large. The smaller ones are ideal for portable devices, while the larger ones can be used for larger devices. Power bank can also come with adapters that allow you to connect them to different types of devices.

When it comes to design, it is important to choose a battery that is durable, sturdy and weatherproof. There are different materials used to make external batteries, such as plastic, metal, leather and silicone. Some models may also have a protective coating to protect them from heat and scratches.

It is also important to choose an external battery that is aesthetically pleasing and in keeping with your personal style. External batteries are available in a variety of colors and patterns that can match your design. It is also possible to choose customized models with logos or images.

Finally, it is essential to choose a battery that is easy to use and maintain. It is important to check that the product comes with clear and easy to understand instructions. It is also important to check that the product comes with a charger that is compatible with your device.

In conclusion, choosing a power bank requires consideration of several criteria. It is important to choose a good size and design, which are adapted to your needs and your device. It is also important to choose an external battery that is durable, robust and aesthetically pleasing. Finally, it is essential to choose a product that is easy to use and maintain.


In conclusion, choosing an external battery can be a daunting task when you don’t understand the different aspects to consider. But by understanding the different types of external batteries, determining the capacity based on your needs, identifying the technical criteria to consider, choosing the right connectors and accessories, and selecting the right size and design, you will find the perfect external battery for your needs. It’s important to remember that an external battery can offer a wide variety of features, so it’s important to take the time to understand the criteria to consider before choosing your external battery.

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Avis Clients

Fox MulderFox Mulder
20:10 21 May 22
Un SAV au TOP. J'ai eu un problème avec le panneau solaire après 2 semaines d'utilisations. L'équipe de Powertec n'a pas cherché à comprendre si ça venait d'une mauvaise utilisation. Ils me l'ont réparé. Il est comme neuf. Un grand merci!
Sylvie EsdourrubailhSylvie Esdourrubailh
17:37 29 Mar 22
Emportés sur les chemins de compostelle, ces petits panneaux m'ont permis de recharger mon portable aisément. Très bonne qualité. Je réfléchis à en équiper mes enfants!
Lo PrigeLo Prige
15:46 28 Mar 22
Un beau savoir-faire à la française !
Patrick BonifasPatrick Bonifas
11:51 25 Mar 22
Chargeur solaire très performant et complet au niveau des connexions
11:43 25 Mar 22
Chargeur solaire pt21 au top , prix un peu élevé mais la qualité et la robustesse sont au rdv
Puc SavissevicPuc Savissevic
09:37 24 Mar 22
Livraison rapide, je suis très satisfait de la robustesse du panneau que j'ai acheté