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The BYD Battery-Box Premium LVS 4.0 is a low-voltage lithium iron phosphate storage tower with one module and 4 kWh of usable capacity. The design is modular and can be expanded at any time by adding modules, up to 64 in parallel (256 kWh).
It pairs with inverters from several brands, including SMA, Victron Energy, GoodWe and Sungrow. Usable capacity is measured at full discharge and at 25 °C: at system level it can vary depending on the inverter brand.
The performance warranty provides 60% of usable capacity for ten years, or up to 11.88 MWh of energy transferred, whichever of the two limits comes first.
| Parameter | Value | Source |
|---|---|---|
| Dimensions | 65 × 29.8 × 52.8 cm (25.6 × 11.7 × 20.8 in) | manufacturer website |
| Weight | 64.0 kg (141.1 lb) | manufacturer website |
| Usable capacity | 4 kWh | Declared by the brand |
| Depth of discharge | 100 % | Declared by the brand |
| Cell chemistry | LFP (lithium iron phosphate) | Declared by the brand |
| Expandable | Yes | Declared by the brand |
| Maximum expanded capacity | 256 kWh | Declared by the brand |
| Battery voltage | 51.2 V | Declared by the brand |
| Declared compatible inverters | SMA, Victron Energy, GoodWe, Sungrow, SolarEdge, Solis, Schneider Electric, Deye, Hoymiles, Sosen | Declared by the brand |
| Warranty | 10 anni | Declared by the brand |
| Guaranteed throughput | 11.88 MWh | Declared by the brand |
| Guaranteed remaining capacity | 60 % | Declared by the brand |
| Round-trip efficiency | 95 % | Declared by the brand |
| Ingress protection | IP55 | Declared by the brand |
| Mounting | Floor standing | Declared by the brand |
| Minimum temperature | -10 °C | Declared by the brand |
| Maximum temperature | 50 °C | Declared by the brand |
| Open protocols | CAN bus | Declared by the brand |
| Declared standards | CE, UN 38.3, IEC 62619, VDE 2510-50 | Declared by the brand |
| Nominal capacity | — | Not declared |
| Cell supplier | — | Not declared |
| Continuous output | — | Not applicable |
| Phases | — | Not applicable |
| Backup power | — | Not applicable |
| Backup phases | — | Not applicable |
| Switchover time | — | Not applicable |
| Black start | — | Not applicable |
| Grid charging | — | Not applicable |
| Dynamic tariffs | — | Not applicable |
| EV charger integration | — | Not applicable |
| Heat pump integration | — | Not applicable |
| Virtual power plant | — | Not applicable |
| Rated cycles | — | Not declared |
| Capacity at end of cycle life | — | Not declared |
| Standby consumption | — | Not declared |
| Cell heating | — | Not declared |
| Noise level | — | Not declared |
| Battery passport | — | Not declared |
| Carbon footprint | — | Not declared |
| Recycled content | — | Not declared |
| Grid connection power | — | Not applicable |
| Official list price | — | Not declared |
The rest of the data comes from one page on the manufacturer's site, cited row by row in the table above.
A manual or a datasheet counts as a source even when the original file is hosted elsewhere: what matters is the document, not the server. Where that happens, it is stated above.
These numbers are calculated, not stated: they have no source to cite, they have a formula you can redo. The price used is the manufacturer's list price, which is stable and the same in every country — not a shop's price on the day.
