BYD Battery-Box Premium HVM 22.1 vs SMA Home Storage 6.5
Technical comparison · High voltage
BYD Battery-Box Premium HVM 22.1 and SMA Home Storage 6.5 are not direct competitors: different use classes. SMA Home Storage 6.5 is the entry-level choice; BYD Battery-Box Premium HVM 22.1 offers more capability in a higher class. Judge them by budget, not head-to-head.
| Parameter |
Battery-Box Premium HVM 22.1
BYD
F5 · Large-house-sized (over 20 kWh)
|
Home Storage 6.5
SMA
F3 · Flat-sized (3–8 kWh)
|
|---|---|---|
| In brief | ||
| Usable capacity | 22.08 kWh | 6.56 kWh |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Weight | — | 76 kg |
| Dimensions (W×D×H) | 58.5 × 29.8 × 216 cm | 61 × 21.46 × 96.9 cm |
| How long it lasts | ||
| Battery life cycles | 3094 cicli | 730 cicli |
| The limit that runs out first | energia garantita | anni di garanzia |
| Rated cycles | 3650 cicli | 8000 cicli |
| Capacity at end of cycle life | — | 60 % |
| Warranty | 10 anni | 2 anni |
| Guaranteed throughput | 68.31 MWh | 47.232 MWh |
| Guaranteed remaining capacity | 60 % | 60 % |
| The numbers | ||
| Energy density | — | 86.3 Wh/kg |
| Identity | ||
| Use tier | F5 — Large-house-sized (over 20 kWh) | F3 — Flat-sized (3–8 kWh) |
| Category specs | ||
| Depth of discharge | 100 % | 100 % |
| Expandable | Yes | Yes |
| Maximum expanded capacity | 66.2 kWh | 16.4 kWh |
| Battery voltage | 409.6 V | 192 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. | Compatibile con entrambi gli inverter ibridi della gamma Smart Energy di SMA: il monofase Sunny Boy Smart Energy (da 1 a 4 moduli) e il trifase Sunny Tripower Smart Energy (da 2 a 5 moduli). È la prima taglia della gamma che può scegliere fra i due. Non retrofittabile sui vecchi Sunny Boy Storage (SBS2.5-1VL-10, SBS3.7-10-SBS6.0-10) né con inverter di altri marchi. |
| Round-trip efficiency | 96 % | 94.5 % |
| Standby consumption | — | 4 W |
| SPI index (HTW Berlin) | — | 92.8 % |
| HTW test power class | — | 5 kW class |
| HTW test edition | — | Stromspeicher-Inspektion 2026 |
| Ingress protection | IP55 | IP65 |
| Mounting | Floor standing | Wall mounted |
| Minimum temperature | -10 °C | -10 °C |
| Maximum temperature | 50 °C | 50 °C |
| Works without internet | Fully | — |
| Local control | Local network | — |
| Open protocols | CAN bus | — |
| Remote updates | — | Can be disabled |
| App required for setup | Yes | — |
| Declared standards | CE, UN 38.3, IEC 62619, VDE 2510-50 | CE, UN 38.3, IEC 62619, IEC 62477, VDE 2510-50 |
The differences that matter
- Usable capacity: BYD Battery-Box Premium HVM 22.1 22.08 kWh vs SMA Home Storage 6.5 6.56 kWh
- Warranty: BYD Battery-Box Premium HVM 22.1 10 years vs SMA Home Storage 6.5 2 years
- Guaranteed throughput: BYD Battery-Box Premium HVM 22.1 68.31 MWh vs SMA Home Storage 6.5 47.232 MWh
- Ingress protection: BYD Battery-Box Premium HVM 22.1 IP55 · SMA Home Storage 6.5 IP65
- Mounting: BYD Battery-Box Premium HVM 22.1 Floor standing · SMA Home Storage 6.5 Wall mounted
Which one to choose
Choose BYD Battery-Box Premium HVM 22.1 if…
you value usable capacity, warranty and guaranteed throughput. It is the most capable in its class.
Choose SMA Home Storage 6.5 if…
you prefer this set-up — ingress protection: IP65; mounting: wall mounted.
This comparison points to the two product pages, where you'll find the complete data and the official links.