BYD Battery-Box Premium HVS 12.8 vs Tesla Powerwall 3
Usable capacity: BYD Battery-Box Premium HVS 12.8 12.8 kWh, Tesla Powerwall 3 13.5 kWh. The Tesla Powerwall 3 is better on 4 of 6 comparable points.
Who wins where
- BYD Battery-Box Premium HVS 12.8
- Tesla Powerwall 3
Biggest differences
| Fact | Battery-Box Premium HVS 12.8 | Powerwall 3 |
|---|---|---|
| Expandable up to | 38.4 kWh | 94.5 kWh |
| Min. operating temperature | -10 °C | -20 °C |
| Weight | 205 kg | 130 kg |
| Usable capacity | 12.8 kWh | 13.5 kWh |
Score per area = position (0–100) relative to all 39 models in this category; higher is better.
| Technical specifications | BYDBattery-Box Premium HVS 12.8 | TeslaPowerwall 3 |
|---|---|---|
| General | ||
| Cell chemistry | LFP 1 | – |
| Wi-Fi / app | – | Yes 2 |
| Performance | ||
| Usable capacity | 12.8 kWh 1 | 13.5 kWh ✓ 2 |
| Expandable up to | 38.4 kWh 1 | 94.5 kWh ✓ 2 |
| Charge power (continuous) | – | 5 kW 2 |
| Discharge power (continuous) | – | 11.04 kW 2 |
| Efficiency | ||
| Round-trip efficiency | 96 % 1 | – |
| Electrical | ||
| Phases | – | 1 2 |
| Backup power | Yes 1 | Yes 2 |
| Off-grid capable | Yes 1 | – |
| Dimensions & weight | ||
| IP rating | IP55 1 | IP55 2 |
| Min. operating temperature | -10 °C 1 | -20 °C ✓ 2 |
| Width | 585 mm 1 | 609 mm 2 |
| Height | 1,461 mm 1 | 1,105 mm 2 |
| Depth | 298 mm 1 | 193 mm 2 |
| Weight | 205 kg 1 | 130 kg ✓ 2 |
| Warranty & lifespan | ||
| Warranty | 10 years 1 | 10 years 2 |
Sources
- Battery-Box Premium HVS – datasheet, BCU2.0 V1.0 EN (28.03.2025) — BYD Lithium Battery Co., Ltd. · accessed 27 Sept 2026
- Powerwall 3-Datablad, 2026 — Tesla, Inc. · accessed 27 Sept 2026