Expansion batteries
More capacity for a compatible power station or home battery. Check your exact model before you choose.
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How to choose an expansion battery
An expansion battery adds capacity in watt-hours (Wh) to a compatible power station or home battery, so the same loads run for more hours. It does not raise the continuous output in watts.
Start from your loads and hours: the calculator shows how much capacity you need, and the product page shows how many batteries your model accepts.
- Compatibility with your exact model.
- How many expansion batteries your model accepts.
- Whether the connection cable is included.
- Weight and where it will sit.
Choose with more clarity.
Does an expansion battery add watts?
No. It adds capacity (watt-hours), so the same devices run for more hours. The continuous output in watts stays that of the power station or power module.
Can I use an expansion battery from another model or brand?
No. Each expansion battery works only with the models its manufacturer lists. Check your exact model and how many batteries it accepts.
Which battery do I need?
Choose what you want to keep on and for how many days. The calculator balances your usage hour by hour against the battery, the sun or a generator, at today’s prices.