In regards to

  • To save money and control your budget

    The cost of resources (Energy, Food & Water) keeps increasing.

    Little or no visibility/control over future (inevitable) increases

  • To protect the planet and act responsibly & sustainably

    Faced with climate change, it is necessary for everyone to take their responsibilities.

    Ecological awareness, now the #1 priority of the French!

  • To be more free & independent

    Dependence on public and/or private distribution networks to meet all our essential needs, no control over systems which are sometimes at risk and which do not always respect the environment.

  • BY 2030

    We will use


    more electricity

  • BY 2050

    We will have to reduce


    our energy consumption to limit global warming to 2°C

And to this is added the explosion in the price of our energy, coupled with an uncertain ecological impact.

Autonomy cannot be improvised, it must be prepared.

For this Atonoma offers you the best selection of products to allow you to organize yourself according to your needs.

Atonoma is a concept store that offers you a selection of the best autonomy products available on the market, all of excellent quality, from the shortest possible circuit and respectful of the environment.

We currently work with four suppliers: Sunslice , an innovative start-up based in Belgium, Sunology , based in Nantes, as well as Fonto de Vivo (whose products are entirely manufactured in Vendée) and Ozeanic , a young Spanish start-up. .

The goal is not to become 100% autonomous, but to develop one's autonomy on a daily basis or in the event of an emergency.

Quality > Quantity

Atonoma is intended to be a selection, each of the solutions on the site has been tested, all products have been designed and developed by European companies and start-ups.

short circuit

We try as far as possible to offer products manufactured and/or assembled in Europe and as locally as possible.

Autonomy: A collective subject

Because autonomy is not just an individual subject. If each of us, in his own way, succeeds in moving towards more autonomy, then it is our society and our entire planet that will also benefit. If you have comments, questions, suggestions, do not hesitate to contact us on our contact page .

Collapsible content

What is the difference between Volt, Ampere and Watt?

Electric current is similar to a stream.

The voltage (Volt) can be compared to the width of a river (15 volts for a stream and 12000 volts for a river).

The intensity (Ampere) can be compared to the speed of the current (1 ampere = the source of a rivulet which passes at the bottom of a garden, 1000 amperes = the Niagara falls)

Power (**Watt)** is the product of Volts by Amps (P watt = U volt x I ampere). It can therefore be compared to the flow of the river.

So a very wide stream (Volts) with zero current velocity (Ampere) would be like a lake or pond. Applied to electricity, this means that the electrical potential (Volt) is high but the speed (Ampere) of energy circulation is too low to obtain a sufficient flow rate (Watt) to efficiently transfer energy from one object to another.

Conversely, a very narrow stream (Volt) with a very high current speed (Ampere) will have to be channeled. Indeed, too high a flow (Watt) can cause a flood, and therefore cause the water to overflow from its bed. In electricity, this is called a short circuit. To avoid it, it is necessary to protect this circulation of energy. The higher the number of Watts circulating, the more attention must be paid to the cables and the ability of the object receiving this energy to absorb it (or to cut out in the event of excess current).

If a 100% charged battery (or a solar panel exposed to the sun or an AC adapter) is connected to a device whose nominal voltage (Volt) is lower than the source, then the transfer of energy can take place, provided that the current characteristics of the transfer cable and the target device are consistent.

What is home autonomy?

Autonomy (synonymous with self-production) is the consequence of a process of self-consumption.

It is defined by the fact that the production of solar panels, for example, allows you to cover all or part of your consumption.

In general, here is how your electricity consumption is divided between the main items in your home:

Breakdown of energy consumption in an average household:

Heating : 35%

Domestic hot water : 35%

Appliances : 25%

Lighting : 5%

For example, if your house consumes 10kWh of electricity in a day and, at the same time, your installation of solar panels on your roof produces 5kWh, your autonomy rate is 50%.

What is an external battery?

An external battery is a portable charger (mostly lithium) capable of storing electricity so that you can use it when you want to recharge or power a mobile device (Smartphone, tablet, laptop, camera and other connected objects). So you no longer need to connect your accessory to a mains socket. You are completely independent.

What is a power bank?

The term "Power bank" is the English translation of "External battery". Power bank is not a brand, but a generic name for naming external batteries. Besides power bank, we can call them: USB charger, nomadic accumulators, backup battery, USB battery, portable battery etc...

What does mAh mean?

The abbreviation mAh stands for "milliampere". The capacity of the external battery is expressed in milliamperes (mAh). The higher the mAh number, the longer your battery will last. For example, a power bank with a capacity of 2600mAh will be able to charge a smartphone approximately 1.5 times. A power bank with a capacity of 5000mAh can on average charge a Smartphone 3 times.

What devices can I charge with a portable power bank type charger?

All 5V rechargeable devices can be recharged with a conventional external battery. This is the case for all devices that can be recharged via the USB port of a computer, for example. There are also multi-voltage batteries capable of delivering 9V, 16V or 19V. You can check on your devices (laptops, electric coolers, etc.) their compatibility with the voltage and amperage of the backup battery.

How to charge an external battery?

To recharge a portable battery you use the micro USB cable supplied with our batteries. This will allow you to recharge it via the USB port of a computer or on an electrical outlet with a USB adapter or connected to a charger/solar panel.

What is the ideal capacity to charge a mobile phone?

Generally, a 2600mAh external battery is recommended if you want to occasionally recharge your Smartphone. That is, once or twice a week depending on your needs.

A 10000mAh power bank will be recommended if you want to use your backup battery every day to power your cell phone. This is usually the case for users of WIFI, games and other battery-intensive applications.

How many mAh do I need to charge a touch pad?

For a small Android tablet, a backup battery of at least 5000mAh will do.

For iPad users, an external battery of 10000mAh and above will do.

What is the delivery delay ?

It usually takes 3-5 days to receive the product at your place. You will find all the details concerning the delivery on this page.

Is my external battery guaranteed?

In accordance with French law on distance selling, you have the right of withdrawal for 14 days (satisfied or refunded). In addition, all products sold on our online store are guaranteed for 1 year. All returns are subject to the return conditions mentioned here.

How can I return my external battery?

To assert your right of withdrawal or your guarantee, the procedure is simple and is carried out by e-mail here, by written request. Please send an e-mail mentioning your customer number, surname, first name and reason for the return. In the case of a breakdown or malfunction, please attach a photo, a video and a description of the problem so that we can establish an initial diagnosis.

How to contact customer service?

Our customer service can be reached by e-mail via the contact form that you will find in the “Contact” tab.

What is a solar generator?

We have already mentioned the subject several times in our comparison of solar generators, but a reminder shot will not hurt: this device allows energy to be stored by a mains socket or by a solar panel, in order to redistribute it by different grips. Although each model is different, they all consist of the same main elements:

Inputs: to receive electrical energy

A charge regulator and converter: allowing good assimilation of the current received and avoiding overloads

A lithium battery: Li-ion or LiFePO4, these batteries are used to store energy

Outputs: to redistribute stored energy, in the form of an AC, DC or USB port

Each of its elements varies in number and power from one model of solar generator to another. Options are often present, such as LED lamps or control surfaces.

How to recharge a solar energy generator?

Solar generators can receive energy from a large number of sources:

By alternating current: the household current from our mains sockets

By direct current: generated by the dynamo of your car for example

By solar panel: captured directly from solar radiation

These energy sources make it possible to always have a means of recharging, and thus avoid power outages.

How long does it take to recharge a solar energy generator?

This question comes up very frequently, and the answer depends on several factors:

Solar generator battery capacity

Whether or not to use the device while charging

The way of feeding

The more powerful the lithium battery of a solar generator, the longer its recharge time, regardless of the power mode. If you use your device at the same time as you recharge it, the energy consumed must also be taken into account, which can considerably extend the charging time. Power mode is a determining factor, as each method provides very different performance:

Alternating current: the fastest of all charging types

Direct current: very fast, but the need for current conversion slows down the process

Solar panel: very dependent on the power of the panel and the weather conditions

How do I maximize the charge of my solar power generator?

Not having electricity when you need it most can be very unpleasant, even dangerous. The flexibility of solar generators, however, makes this prospect unlikely. In order to make the best use of the capacities of your solar energy generator, we recommend these few tips:

Always leave with a full battery: for a day at the beach or for an expedition over several days, be sure to charge your solar generator in advance from the mains socket. This will avoid the need for recharging for a while

Charge your generator while driving: take advantage of the 12V power supply via the cigarette lighter socket to keep your solar generator charged while you are driving, without impacting your starter battery

Finally, be careful not to leave connected devices that can unnecessarily drain the battery of your solar energy generator, such as a telephone charger. It's an easy oversight that can have serious consequences!

Take advantage of the sun's rays: in nature, recharge your generator as soon as possible. Every ray of sunshine counts when there is no access to electricity!

Why buy a solar generator?

Many situations can lead you to invest in a solar generator. You may be affected both as an individual and as a professional. So let's see what are the occasions that are compatible with the purchase of batteries that work with portable and foldable solar panels.

Of course, it will be necessary to adapt the power and the autonomy according to your needs, as proposed by the Nomadic Batteries. which will allow you to use them to power:

a van, a motorhome, a converted van, needs on a boat, a stand at an event, your tools on a small construction site, your electrical needs, if you go camping or if you go on treks, your fishing trip, etc.

You just have to choose the solution that suits your needs.