Which home battery fits your home?
Two numbers matter. Capacity, in kWh, is how much energy the battery stores: enough for your evening and night use is the usual target. Output, in W, is how much power it can deliver at once: higher output runs more appliances at the same time. The Marstek Venus E 4.0 stores 5 kWh and delivers up to 3 kW; the Venus E Max stores 10 kWh.
All-in-one or separate battery?
All-in-one batteries such as the Anker Solarbank combine battery, controller and microinverter in one device: the solar panels connect directly to the battery. Batteries such as the Marstek Venus E connect to a socket and work alongside the solar system you already have, from a balcony kit to a rooftop installation.
Expandable storage
Most of our batteries grow with you. The Venus E 4.0 expands to 15 kWh, and the Anker Solarbank expands with BP2700 or BP5000 expansion batteries. Start with what you need today and add capacity later.
Backup during a power cut
Batteries with a backup or off-grid outlet keep essential devices running when the grid goes down. The Marstek Venus E 3.0 and the Anker Solarbank 3 Pro both offer this. Check each product for its backup power.
Charging from solar or from the grid
Your battery charges from the solar power your home doesn't use. Some models, such as the Marstek Venus E, can also charge from the grid, for example when power is cheaper at night on a time-of-use tariff. Pair a battery with a balcony solar kit or see our kits with battery.
