BYD Battery-Box Premium HVS 12.8 vs Huawei LUNA2000-7-S1
Technical comparison · High voltage
A 12.8 kWh battery compatible with sixteen inverter brands against a 6.9 kWh module that works only with Huawei inverters. The choice is settled by the inverter you have or plan to install. Manufacturer-declared values.
| Parameter | ||
|---|---|---|
| In brief | ||
| Usable capacity | 12.8 kWh | 6.9 kWh |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | — | 521.74 €/kWh |
| List price | — | 3600 € |
| Weight | 205 kg | 80 kg |
| Dimensions (W×D×H) | 58.5 × 29.8 × 146.1 cm | 59 × 25.5 × 51 cm |
| How long it lasts | ||
| Battery life cycles | 3010 cicli | 1825 cicli |
| The limit that runs out first | energia garantita | anni di garanzia |
| Rated cycles | 3650 cicli | 5000 cicli |
| Capacity at end of cycle life | — | 80 % |
| Warranty | 10 anni | 5 anni |
| Guaranteed throughput | 38.53 MWh | 28.84 MWh |
| Guaranteed remaining capacity | 60 % | 60 % |
| The numbers | ||
| Cost of stored energy | — | 0.286 €/kWh |
| Energy density | 62.4 Wh/kg | 86.2 Wh/kg |
| Identity | ||
| Use tier | F4 — House-sized (8–20 kWh) | F3 — Flat-sized (3–8 kWh) |
| Price | ||
| Price | — | ~2200–5000 € |
| Category specs | ||
| Depth of discharge | 100 % | 100 % |
| Expandable | Yes | Yes |
| Maximum expanded capacity | 38.4 kWh | — |
| Battery voltage | 512 V | — |
| Declared compatible inverters | Sedici marchi nell'elenco ufficiale: Fronius, GoodWe, Viessmann, KOSTAL, SMA, Sungrow, GE, KACO, KACO NH, Ingeteam, Solis, Canadian Solar, Deye, Solplanet, Western CO, Sosen. Per ciascun modello l'elenco dà il numero di moduli ammessi e la versione minima del firmware. | Solo inverter Huawei — SUN2000-2/3/3.68/4/4.6/5/6KTL-L1, SUN2000-3/3.68/4/4.6/5/6K-LB0, SUN2000-8/10K-LC0, SUN2000-3/4/5/6/8/10KTL-M1, SUN2000-5/6/8/10/12K-MAP0, SUN2000-12/15/17/20/25K-MB0, SUN5000-3/6K-LB0, SUN5000-8/12K-MAP0, SUN5000-17/25K-MB0 |
| Maximum charge power | — | 3.5 kW |
| Grid charging | — | Yes |
| Round-trip efficiency | 96 % | — |
| Ingress protection | IP55 | IP66 |
| Mounting | Floor standing | Floor standing |
| Minimum temperature | -10 °C | -20 °C |
| Maximum temperature | 50 °C | 55 °C |
| Noise level | — | 29 dB |
| Works without internet | Fully | With limitations |
| Local control | Local network | — |
| Open protocols | CAN bus | — |
| Remote updates | Can be disabled | — |
| App required for setup | Yes | Yes |
| Declared standards | CE, UN 38.3, IEC 62619, VDE 2510-50 | CE, UN 38.3, IEC 62619 |
The differences that matter
- Compatible inverters → BYD: sixteen brands on the official list; Huawei: only its own SUN2000 and SUN5000 range. The inverter comes first.
- Usable capacity and weight, 12.8 kWh and 205 kg vs 6.9 kWh and 80 kg → nearly twice the energy, but the floor and the route in must be planned for 205 kg.
- Warranty, 10 vs 5 years → guaranteed energy is 38.53 vs 28.84 MWh: the BYD stays covered twice as long and for more energy delivered.
- Without internet, fully vs reduced → the BYD keeps working on the local network; the Huawei runs in a reduced mode.
Which one to choose
Choose BYD Battery-Box Premium HVS 12.8 if…
A home with an inverter from another brand (BYD's official list includes Fronius, SMA, Sungrow and KOSTAL, among others), which needs to run fully without internet, on the local network, with remote updates that can be switched off. 12.8 kWh usable and a 10-year warranty. The trade-off is weight, 205 kg, and IP55, floor-mounted.
Choose Huawei LUNA2000-7-S1 if…
A home with a Huawei SUN2000 or SUN5000 inverter: 6.9 kWh usable in 80 kg, IP66 and a minimum temperature of −20 °C. You accept a 5-year warranty and reduced operation when there is no internet.
Where to buy
The purchase links are the same as on the two product pages and don't influence the verdict. The product pages have the complete data.