Lithium battery

Solar batteries allow you to store the electricity generated by your photovoltaic panels for later use: self-consumption, backup in case of power cuts, or off-grid sites. Here you will find different technologies (including lithium LiFePO4 and AGM/GEL) as well as compatible accessories.

To make an effective choice, consider the useful kWh (energy that can actually be used), check the voltage (12/24/48V, 51.2V or high voltage depending on the system) and, if necessary, the BMS communication (CAN/RS485). To compare the price per useful kWh, consult our tool. Then estimate your return on investment.

Battery comparison
Battery profitability calculator

Choose in 30 seconds

  • Self-consumption (daily use): opt for a LiFePO4 lithium battery (many cycles).
  • Emergency/backup: check compatibility with your hybrid inverter and power cut management.
  • Off-grid site: size in useful kWh and check the voltage (12/24/48V or high voltage depending on the system).
  • Budget: compare the price per useful kWh and estimate the payback period using the calculator.

Need to size your photovoltaic production before choosing storage?

Solar simulator

To manage a battery, discover our

Hybrid inverters
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FAQ - Solar batteries

1. Which solar battery should I choose: lithium (LiFePO4) or AGM/GEL? +
LiFePO4 lithium is often preferred for self-consumption thanks to its long lifespan (cycle count). AGM/GEL can also be suitable depending on budget and use. To compare, use the battery comparison guide.
2. How do I size a solar battery in usable kWh? +
Think in terms of usable kWh (actually available energy) based on your goals: self-consumption, backup or off-grid. To estimate PV production and refine sizing, use the Solar Simulator.
3. Which voltage should I choose (12V, 24V, 48V, 51.2V or high voltage)? +
Voltage depends on your system and inverter. 12/24/48V is common in off-grid setups, while some systems use high voltage. Always check compatibility with your equipment.
4. Is a solar battery suitable for backup during a power outage? +
Yes, if the system is designed for backup: the battery, the inverter (often a hybrid inverter) and the desired operating mode must be consistent.
5. How do I compare the price of a solar battery? +
Compare the price per usable kWh (actually available capacity) rather than the “catalog” capacity. Use the comparison guide and validate profitability with the storage calculator.