Which capacity should I choose: 5 kWh, 10 kWh or 16 kWh?

Choosing a home battery capacity is really a question about load and cycle life, not about budget alone. All three capacities share the same cell platform and the same battery management system. The choice therefore comes down to how much energy you need, how much current your inverter demands, and how hard the battery will be worked. That holds whichever storage capacity you pick.

What the home battery capacity options share

Every unit in the range uses Grade A LiFePO4 cells from EVE, CATL or GOTION in a 16S1P configuration. A smart BMS provides 18-layer protection. It covers over and under voltage, charge and discharge overcurrent, short circuit and low-temperature charge protection. It also covers high-temperature discharge protection, cell balancing, temperature monitoring and fault alarms.

They also share the same communication set — CAN, RS485 and RS232. The same inverter pairing therefore works across the range, whatever battery capacity options you pick. In contrast, what changes is capacity, current rating and published cycle life.

What changes between the three capacities

The 5 kWh unit carries a published cycle life of 6,000 cycles or more at 25°C. Its maximum continuous charge current is 50 A, and its discharge current is 100 A. It suits essential-load backup and smaller solar self-consumption setups, where the smaller battery capacity options fit.

The 10 kWh and 16 kWh units carry a rating of 8,000 cycles or more at 25°C. Their maximum continuous charge currents are 100 A and 150 A, and their discharge currents are 200 A and 300 A respectively. In addition, the higher discharge ratings matter if you want to run heavy loads or a larger inverter. That holds across the storage capacity options.

How to decide between storage capacity options

For instance, match the capacity to your measured overnight load first. Then check the current rating against your inverter’s continuous output, not storage capacity alone. If both fit a smaller unit but you expect to add loads later, remember one thing. All of these formats support parallel expansion, up to 64 units. The stackable range grows in 5.12 kWh steps from 10.24 kWh to 30.72 kWh, so storage capacity can grow with the load.

See the full specification tables for every storage capacity on the wall-mounted and floor-mounted product pages. You can also download the datasheets from our resources page. The relevant safety standard for these systems comes from UL Solutions. Still unsure which capacity suits your house? Send us your load profile.