BYD Battery-Box Premium HVS 7.7
The BYD Battery-Box Premium HVS 7.7 is a home battery with usable capacity 7.68 kWh, round-trip efficiency 96 % and cell chemistry LFP.1
Key figures
Technical specifications
| General | |
|---|---|
| Cell chemistry | LFP1 |
| Performance | |
| Usable capacity | 7.68 kWh1 |
| Smallest configuration | 5.12 kWh1 |
| Expandable up to | 38.4 kWh1 |
| Efficiency | |
| Round-trip efficiency | 96 %1 |
| Electrical | |
| Backup power | Yes1 |
| Off-grid capable | Yes1 |
| Dimensions & weight | |
| IP rating | IP551 |
| Min. operating temperature | -10 °C1 |
| Width | 585 mm1 |
| Height | 995 mm1 |
| Depth | 298 mm1 |
| Weight | 129 kg1 |
| Warranty & lifespan | |
| Warranty | 10 years1 |
Manufacturer documentation
- Product page
- Datasheet / specifications — Battery-Box Premium HVS – datasheet – BCU2.0 V1.0 EN (28.03.2025)
External links to BYD's official website. The manufacturer may change or move documents; where they differ, the manufacturer's latest version applies.
Compare with
Similar models
Other brands, same type and a comparable size.
More from BYD
- BYD Battery-Box Premium HVM 8.3 Usable capacity: 8.28 kWh
- BYD Battery-Box Premium HVS 10.2 Usable capacity: 10.24 kWh
- BYD Battery-Box Premium HVM 11.0 Usable capacity: 11.04 kWh
- BYD Battery-Box Premium HVS 5.1 Usable capacity: 5.12 kWh
- BYD Battery-Box Premium HVS 12.8 Usable capacity: 12.8 kWh
- BYD Battery-Box Premium HVM 13.8 Usable capacity: 13.8 kWh
Featured in these lists
Guides on home batteries
- Usable vs nominal capacity: what a home battery really delivers
- AC-coupled vs DC-coupled: how a home battery connects
- Plug-in home batteries in the UK: rules, G98 and safety
- Home batteries and time-of-use tariffs: charging cheap, using at peak
- Home battery fire safety: cell chemistry, siting and PAS 63100
How we collect and check this data →
Frequently asked questions
What is the usable capacity of the BYD Battery-Box Premium HVS 7.7?
The usable capacity of the BYD Battery-Box Premium HVS 7.7 is 7.68 kWh.1
What is the round-trip efficiency of the BYD Battery-Box Premium HVS 7.7?
The round-trip efficiency of the BYD Battery-Box Premium HVS 7.7 is 96 %.1
Which cell chemistry does the BYD Battery-Box Premium HVS 7.7 use?
The cell chemistry of the BYD Battery-Box Premium HVS 7.7 is LFP.1
How long is the warranty on the BYD Battery-Box Premium HVS 7.7?
The warranty on the BYD Battery-Box Premium HVS 7.7 is 10 years.1
Sources
- Battery-Box Premium HVS – datasheet, BCU2.0 V1.0 EN (28.03.2025) — BYD Lithium Battery Co., Ltd. · accessed 27 Sept 2026