BYD B-Box Res 2.5 - 2.56kWh - 48V Outdoor Battery Bank

Product discontinued


BYD - Build Your Dreams - 2.56 kWh Lithium battery system with IP55 cabinet

The BYD B-Box Res 2.5 comes with one B-Plus 48 volt, rack mountable battery module in an IP55 (outdoor) rated cabinet and a battery management unit. A single cabinet can hold up to 4 battery modules and the battery bank can be expanded to a maximum of 32 modules.

- safest Lithium battery chemistry (Iron Phosphate)
- weatherproof enclosure
- high power output
- easy installation
- modular design
- 2560W continuous power output - per module!
- 5 + 5 year warranty (register the purchase with BYD to get the extra 5 years!)

You can upgrade the battery bank with additional battery modules [BAT-LB02.56], but you only need one battery management unit [BAX-BBMU-2.5] per battery array. Depending on the size of the array, you may need one or more 19" rack cabinets for indoor IP20 [BAX-BC-IP20] or outdoor IP55 [BAX-BC-IP55] installations.

Weight: 104 Kilograms
Warranty: 10yrs


BYD B-Box Res 2.5 - 2.56kWh - 48V Outdoor Battery Bank
Nominal energy2.56kWh
Usable energy2.56kWh
Nominal capacity50Ah
Max charge/discharge power2.56kW
Peak power5.12kW (30 sec)
Nominal voltage51.2V
Voltage range (DC)43.2V - 56.4V
ChemistryLithium Iron Phosphate (LFP)
Operating temperature range-10 - +50°C
Optimal temperature range10 - 50°C
Dimensions (mm)1650(H) x 620(W) x 335(D)
Net weight103 kg
ModelB-Box Res 2.5


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We install solar systems in Northern NSW and Southern QLD.

Gold Coast (from Coolangatta to Southport), Nerang and Hinterland (Beaudesert) and out West (Warwick, Stanthorpe, Killarney)

Northern NSW (Tweed Heads to Yamba, including Evans Head, Byron Bay and Ballina); the Far North Coast Hinterland (Grafton via Lismore to Murwillumbah) and out West (Casino to Tenterfield, including Drake and Tabulam, as well as Woodenbong and Bonalbo)

For larger system we also go up to Brisbane or down to Coffs Harbour and even Glen Innes. Other places by arrangement.