BYD Battery-Box Premium HVM 22.1 vs Energy Depot DOMUS 2.5
Technical comparison · High voltage
BYD Battery-Box Premium HVM 22.1 and Energy Depot DOMUS 2.5 are not direct competitors: different use classes. Energy Depot DOMUS 2.5 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)
|
DOMUS 2.5
Energy Depot
F2 · Room-sized (1–3 kWh)
|
|---|---|---|
| In brief | ||
| Usable capacity | 22.08 kWh | 2.5 kWh |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Weight | — | 30 kg |
| Dimensions (W×D×H) | 58.5 × 29.8 × 216 cm | 44 × 32.8 × 18 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 | 7000 cicli |
| Warranty | 10 anni | 5 anni |
| Guaranteed throughput | 68.31 MWh | — |
| Guaranteed remaining capacity | 60 % | 80 % |
| The numbers | ||
| Energy density | — | 83.3 Wh/kg |
| Identity | ||
| Use tier | F5 — Large-house-sized (over 20 kWh) | F2 — Room-sized (1–3 kWh) |
| Category specs | ||
| Depth of discharge | 100 % | 100 % |
| Expandable | Yes | Yes |
| Maximum expanded capacity | 66.2 kWh | 20 kWh |
| Battery voltage | 409.6 V | 51.2 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. | CENTURIO, KACO blueplanet hybrid 10TL3 |
| Round-trip efficiency | 96 % | 96 % |
| Standby consumption | — | 0.05 W |
| SPI index (HTW Berlin) | — | 95.4 % |
| HTW test power class | — | 10 kW class |
| HTW test edition | — | Stromspeicher-Inspektion 2026 |
| Ingress protection | IP55 | IP21 |
| Mounting | Floor standing | — |
| Minimum temperature | -10 °C | 5 °C |
| Maximum temperature | 50 °C | 40 °C |
| Works without internet | Fully | — |
| Local control | Local network | — |
| Open protocols | CAN bus | — |
| App required for setup | Yes | — |
| Declared standards | CE, UN 38.3, IEC 62619, VDE 2510-50 | CE, UN 38.3 |
The differences that matter
- Usable capacity: BYD Battery-Box Premium HVM 22.1 22.08 kWh vs Energy Depot DOMUS 2.5 2.5 kWh
- Warranty: BYD Battery-Box Premium HVM 22.1 10 years vs Energy Depot DOMUS 2.5 5 years
- Ingress protection: BYD Battery-Box Premium HVM 22.1 IP55 · Energy Depot DOMUS 2.5 IP21
- Declared standards: BYD Battery-Box Premium HVM 22.1 CE, UN 38.3, IEC 62619, VDE 2510-50 · Energy Depot DOMUS 2.5 CE, UN 38.3
Which one to choose
Choose BYD Battery-Box Premium HVM 22.1 if…
you value usable capacity and warranty. It is the most capable in its class.
Choose Energy Depot DOMUS 2.5 if…
you prefer this set-up — ingress protection: IP21.
This comparison points to the two product pages, where you'll find the complete data and the official links.