Solar battery

Solar battery

Our solar batteries store the electricity generated by your panels for later use: self-consumption, backup or off-grid applications. Find lithium (LiFePO4) solutions as well as AGM/GEL ranges, with compatible accessories. To choose the right technology and compare the price per kWh, consult our battery comparison chart, then estimate your return on investment with the storage 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 calculate the payback period before purchasing.
Size the battery
Calculate profitability
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FAQ – Solar batteries

1. Which solar battery should I choose: lithium (LiFePO4) or AGM/GEL? +
LiFePO4 lithium is often chosen for self-consumption thanks to its long lifespan (high cycle count). AGM/GEL can also be suitable depending on budget and use. To compare, use the battery comparison.
2. How do I size a solar battery in usable kWh? +
Think in terms of usable kWh (the energy you can actually use) based on your needs: self-consumption, backup, or off-grid. To estimate production and refine sizing, use the Solar Simulator.
3. Which battery voltage should I choose (12V, 24V, 48V or high voltage)? +
Voltage depends on the system (installation, inverter, use cases). In off-grid setups, 12/24/48 V is common, while some systems use high-voltage batteries. 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 (outage management, compatibility). The key is consistency between the battery, the inverter and the intended operating mode.
5. How can I compare the price of a solar battery? +
Compare the price per usable kWh rather than the “gross” capacity. For a more complete view, consult the battery comparison and the profitability calculator.