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.
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Both models in detail
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 140 models in this category; higher is better.
| Technical specifications | BYDBattery-Box Premium HVS 12.8 | TeslaPowerwall 3 |
|---|---|---|
| General | ||
| Cell chemistry | LFP1 | – |
| Wi-Fi / app | – | Yes2 |
| Performance | ||
| Usable capacity | 12.8 kWh1 | 13.5 kWh✓2 |
| Expandable up to | 38.4 kWh1 | 94.5 kWh✓2 |
| Charge power (continuous) | – | 5 kW2 |
| Discharge power (continuous) | – | 11.04 kW2 |
| Efficiency | ||
| Round-trip efficiency | 96 %1 | – |
| Electrical | ||
| Phases | – | 13 |
| Backup power | Yes1 | Yes2 |
| Off-grid capable | Yes1 | – |
| Dimensions & weight | ||
| IP rating | IP551 | IP552 |
| Min. operating temperature | -10 °C1 | -20 °C✓2 |
| Width | 585 mm1 | 609 mm2 |
| Height | 1,461 mm1 | 1,105 mm2 |
| Depth | 298 mm1 | 193 mm2 |
| Weight | 205 kg1 | 130 kg✓2 |
| Warranty & lifespan | ||
| Warranty | 10 years1 | 10 years2 |
Frequently asked questions
Which is better: the BYD Battery-Box Premium HVS 12.8 or the 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.
What is the usable capacity of the BYD Battery-Box Premium HVS 12.8 and the Tesla Powerwall 3?
BYD Battery-Box Premium HVS 12.8: 12.8 kWh. Tesla Powerwall 3: 13.5 kWh.
Which is better on expandable up to: the BYD Battery-Box Premium HVS 12.8 or the Tesla Powerwall 3?
Tesla Powerwall 3: 94.5 kWh. BYD Battery-Box Premium HVS 12.8: 38.4 kWh.
Which is better on min. operating temperature: the BYD Battery-Box Premium HVS 12.8 or the Tesla Powerwall 3?
Tesla Powerwall 3: -20 °C. BYD Battery-Box Premium HVS 12.8: -10 °C.
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How we collect and check this data →
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
- ENA Type Test Register (inverters) — Energy Networks Association (ENA) · accessed 27 Sept 2026