Knox 2.56kWh Lithium-ion Battery 25.6V (Powerwall 3.1)
Rs 133,500
Rs 65,186 per usable kWh
Price updated: 23 August 2026
Full specifications
| Brand | Knox |
| Model | LIO 2.66-IP20 |
| Electrical Specifications | |
| Battery type | Lithium |
| Battery chemistry | LiFePO4 |
| Capacity | 100 Ah |
| Cycle life | 6000 |
| Usable capacity | 80% |
| Nominal energy | 2.56 kWh |
| Nominal voltage | 25.6 V |
| Operating voltage range | 24.0-28.8 V |
| Max. parallel batteries | 8 |
| Continuous charging current | 100 A |
| Continuous discharging current | 100 A |
| Peak discharging current | 120 A (2 s) |
| Depth of discharge | 80% |
| General Specifications | |
| Temperature range | Charge 0°C ~ +55°C / Discharge -20°C ~ +55°C |
| IP class | IP20 |
| Communication port | RS485 / CAN + LINK-IN / LINK-OUT |
| Dimensions (W×H×D) | 395 × 160 × 470 mm |
| Weight | 28 kg |
| Mounting type | Wall |
Note: Knox recommend an 80% depth of discharge and quote cycle life at that same depth, so the usable figure and the cycle count are consistent with each other - which is not true of every brand here. Cycle life is stated precisely - >6000 at 25°C, 0.5C/0.5C, 80% DoD to 70% of initial capacity - which is the fuller form of the same claim the Powerwall 3.0 makes. 10-year design calendar life. The step up from the 3.0 is communication and scale: a 4.3-inch touch LCD that lets you switch inverter protocol on the screen, CAN as well as RS485, dedicated LINK-IN/LINK-OUT ports for battery-to-battery, and up to 8 units in parallel against the 3.0's 4. The trade-off is that series connection is not supported at all, where the 3.0 takes 2 in series. Also 3 kg heavier in a quite different case - 395 x 470 x 160 against the 3.0's 350 x 180 x 450. Cells carry IEC62619, UL1973, UL9540A and RoHS; the pack carries UN38.3, MSDS and CE. IP20 indoor only.