Energy Depot DOMUS 2.5 vs SMA Home Storage 16.4
Technical comparison · High voltage
Energy Depot DOMUS 2.5 and SMA Home Storage 16.4 are not direct competitors: different use classes. Energy Depot DOMUS 2.5 is the entry-level choice; SMA Home Storage 16.4 offers more capability in a higher class. Judge them by budget, not head-to-head.
| Parameter |
DOMUS 2.5
Energy Depot
F2 · Room-sized (1–3 kWh)
|
Home Storage 16.4
SMA
F4 · House-sized (8–20 kWh)
|
|---|---|---|
| In brief | ||
| Usable capacity | 2.5 kWh | 16.4 kWh |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Weight | 30 kg | 190 kg |
| Dimensions (W×D×H) | 44 × 32.8 × 18 cm | — |
| How long it lasts | ||
| Battery life cycles | 1825 cicli | 730 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Rated cycles | 7000 cicli | 8000 cicli |
| Capacity at end of cycle life | — | 60 % |
| Warranty | 5 anni | 2 anni |
| Guaranteed throughput | — | 118.08 MWh |
| Guaranteed remaining capacity | 80 % | 60 % |
| The numbers | ||
| Energy density | 83.3 Wh/kg | 86.3 Wh/kg |
| Identity | ||
| Use tier | F2 — Room-sized (1–3 kWh) | F4 — House-sized (8–20 kWh) |
| Category specs | ||
| Depth of discharge | 100 % | 100 % |
| Expandable | Yes | Yes |
| Maximum expanded capacity | 20 kWh | 16.4 kWh |
| Battery voltage | 51.2 V | 480 V |
| Declared compatible inverters | CENTURIO, KACO blueplanet hybrid 10TL3 | Compatibile solo con l'inverter trifase SMA Sunny Tripower Smart Energy, che supporta da 2 a 5 moduli SMA Home Storage: il monofase Sunny Boy Smart Energy arriva al massimo a 4 moduli e non copre questa taglia. 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 | 0.05 W | 10 W |
| SPI index (HTW Berlin) | 95.4 % | — |
| HTW test power class | 10 kW class | — |
| HTW test edition | Stromspeicher-Inspektion 2026 | — |
| Ingress protection | IP21 | IP65 |
| Mounting | — | Wall mounted |
| Minimum temperature | 5 °C | -10 °C |
| Maximum temperature | 40 °C | 50 °C |
| Remote updates | — | Can be disabled |
| Declared standards | CE, UN 38.3 | CE, UN 38.3, IEC 62619, IEC 62477, VDE 2510-50 |
The differences that matter
- Usable capacity: Energy Depot DOMUS 2.5 2.5 kWh vs SMA Home Storage 16.4 16.4 kWh
- Standby consumption: Energy Depot DOMUS 2.5 0.05 W vs SMA Home Storage 16.4 10 W
- Warranty: Energy Depot DOMUS 2.5 5 years vs SMA Home Storage 16.4 2 years
- Ingress protection: Energy Depot DOMUS 2.5 IP21 · SMA Home Storage 16.4 IP65
- Declared standards: Energy Depot DOMUS 2.5 CE, UN 38.3 · SMA Home Storage 16.4 CE, UN 38.3, IEC 62619, IEC 62477, VDE 2510-50
Which one to choose
Choose Energy Depot DOMUS 2.5 if…
you value standby consumption and warranty.
This comparison points to the two product pages, where you'll find the complete data and the official links.