BLUETTI B4810 48V 100Ah LiFePO₄ Expansion Battery for RV5 | 5,120Wh

Add capacity to your BLUETTI RV5 system with an extra B4810 battery. Each B4810 is a 51.2V, 100Ah LiFePO₄ module that adds 5,120Wh of storage, connects to the RV5 Power Hub over a CAN data link so the hub always knows its state of charge and limits, and stacks in parallel as your power needs grow. It's the same battery that ships in our RV5 kits — this listing is the battery alone, for expanding an existing RV5 build or starting a custom 48V system.

The B4810 is IP65-rated and self-heating, so it can charge and discharge down to -4°F (-20°C) — built for rigs that see real winters and real vibration.

Key Specs:

• Dimensions: 23.94 x 14.96 x 5.71 in. (608 x 380 x 145 mm)
• Weight: approx. 101.4 lbs (46 kg)
• Nominal Voltage: 51.2V (operating range 40–58.4V)
• Capacity: 100Ah / 5,120Wh
• Chemistry: LiFePO₄ (lithium iron phosphate)
• Cycle Life: 6,000 cycles to 70% capacity (0.5C, 77°F)
• Max Charge / Discharge Current: 100A / 100A (200A peak for 30 s)
• Charge & Discharge Temperature: -4°F to 131°F (-20°C to 55°C), with self-heating
• Weather Rating: IP65
• Expansion: up to 24 batteries in parallel
• Communication: CAN to RV5 Power Hub; Bluetooth 5.0
• Warranty: 5 years

In the box: B4810 battery, Ethernet (CAN) communication cable, mounting brackets with bolts, nuts and washers, user manual and warranty card. Battery power cables are not included.

Pairs with the BLUETTI RV5 Power Hub, or see our RV5 5kWh Power Kit and RV5 5kWh RV Kit.