BYD
BYD Battery-Box Premium HVS
B4.3 2.56kWh modules
A widely-installed modular high-voltage battery that stacks from 5.1kWh to ~22kWh, paired with a third-party hybrid inverter.
5.12kWh
Usable capacity (base)
8kW
Power output
Best of 5 we compare
22.1kWh
Max with expansion
LFP
Chemistry
10yrs
Warranty
Joint best of 5 we compare
PowerGuide is reader-supported. We may earn a commission from links on this page. It never affects our rankings or what we recommend. Learn more
Our verdict
A proven, flexible HV battery that installers know well and that works with many leading inverters. A safe modular choice; just remember the inverter is a separate purchase.
Good
- Flexible 5–22kWh scaling
- Broad inverter compatibility
- Strong track record
Watch out
- Inverter bought separately
- App depends on the inverter brand
Specifications
| Usable capacity (base) | 5.12 kWh |
|---|---|
| Power output | 8 kW |
| Max with expansion | 22.1 kWh |
| Chemistry | LFP |
| Backup capable | Yes |
| Warranty | 10 yrs |