BYD Battery-Box Premium HVM 8.3 vs Huawei LUNA2000-7-S1
Technical comparison · High voltage
The two batteries are close in size, 8.28 and 6.9 kWh usable; the inverter decides, because the Huawei works only with Huawei inverters while BYD lists sixteen brands. All figures are manufacturer-declared values.
| Parameter | ||
|---|---|---|
| In brief | ||
| Usable capacity | 8.28 kWh | 6.9 kWh |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | — | 521.74 €/kWh |
| List price | — | 3600 € |
| Weight | — | 80 kg |
| Dimensions (W×D×H) | 58.5 × 29.8 × 99.5 cm | 59 × 25.5 × 51 cm |
| How long it lasts | ||
| Battery life cycles | 3094 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 | 25.62 MWh | 28.84 MWh |
| Guaranteed remaining capacity | 60 % | 60 % |
| The numbers | ||
| Cost of stored energy | — | 0.286 €/kWh |
| Energy density | — | 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 |
| Battery voltage | 153.6 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 | — |
| 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
- 8.28 vs 6.9 kWh usable → about 1.4 kWh more to use every day with the BYD.
- Warranty 10 vs 5 years, but 25.62 vs 28.84 MWh guaranteed → the BYD lasts longer in years, the Huawei allows more total energy: it depends on how much you cycle.
- Inverters: sixteen brands vs Huawei only → with a non-Huawei inverter, the BYD is the only option (if your model is listed).
- IP55, minimum -10 °C vs IP66, minimum -20 °C → the Huawei has the higher protection rating and the wider temperature range.
Which one to choose
Choose BYD Battery-Box Premium HVM 8.3 if…
your inverter is not a Huawei, or you want a long warranty and a system that works fully without internet and can be controlled over the local network. The catch is the guaranteed energy: with one cycle a day, in theory, the guaranteed-energy cap arrives after about eight and a half years (3,094 cycles), before the ten years of warranty are up.
Choose Huawei LUNA2000-7-S1 if…
your inverter is already a Huawei SUN2000 or SUN5000 and you want a low unit (51 cm), rated IP66, working from -20 to 55 °C. The compromise: the warranty is five years, without internet it works in a reduced way and it takes no other inverters.
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.