Bluetti B4810 (51.2V-100Ah ) LiFePO4 Battery

Features

• Works in the Cold: Self-heating technology keeps charging safe even below 0℃ (32℉), for reliable power year-round.
• App Monitoring: Track battery level, voltage, and temperature with the BLUETTI app via Bluetooth.
• Get Ready Fast: Recharges quicker than lead-acid, so you spend less time waiting and more time doing.
• Easy to Move and Install: Smaller and simpler than traditional lead-acid batteries for faster placement.
• Modular & Expandable: Link multiple units to customize your energy setup.
• Power Any Scenario: Ideal for RVs, boats, off-grid homes, cabins, trolling motors, and weekend trips.

The BLUETTI B4810 is a 48 V LiFePO₄ battery with 5.12 kWh storage capacity (51.2 V, 100 Ah), designed as a battery module for serious 48 V systems. It is intended for installations where a standard 12 V house battery is no longer sufficient: motorhomes and camper vans with air conditioning or induction cooking, expedition vehicles, boats, off-grid systems or a compact home setup. In all these situations, the B4810 serves as the central battery, often in combination with a power hub such as the BLUETTI RV5.

When Should You Choose a B4810?

The B4810 is interesting if you want to power more than just 12 V lighting and a fridge. A single battery offers 5.12 kWh of storage and around 5 kW of continuous power, bringing heavier loads such as air conditioning, a boiler, cooktop or power tools within reach, as long as you stay within the specifications. Because you are running at 48 V, currents remain lower than in a comparable 12 V system, cabling stays more manageable and losses are reduced. On top of that, you can build the battery bank in a modular way: you start with one B4810 and later expand with extra modules to reach a total storage capacity of more than 120 kWh.

Power and Service Life

Inside, the B4810 uses long-life LiFePO₄ cells. The battery is designed for thousands of charge cycles while retaining a large proportion of its original capacity. The recommended charge current is around 50 A, with headroom up to 100 A if the installation is designed for it, so the battery stays within safe limits even at higher charging powers.

Enclosure and Use

The enclosure is designed for use in vehicles and technical spaces. The B4810 is dust- and water-resistant to IP65 and features a flame-retardant housing (UL5VA), so it is well protected in a garage, service compartment or motorhome installation. Thanks to the built-in self-heating function, charging remains possible even at lower temperatures: if the battery is too cold and charge current becomes available, it first warms itself up before the actual charging process starts. Discharging is possible over a wider temperature range, so the system remains practical to use in spring and autumn or in colder regions.

Connection with RV5

The B4810 shows its full potential as the heart of a complete 48 V energy system. In the BLUETTI RVSolar 48V Power System, the RV5 Power Hub takes on that role. The B4810 stores all energy as 48 V DC; the RV5 decides what happens with it. Shore power or a generator, solar panels on the roof and the vehicle’s alternator are all used via the RV5 to charge the battery. From the same battery, the RV5 then converts 48 V back to 230 V for wall sockets and to 12 or 24 V for the DC on-board system, so you can run air conditioning, cooktop, fridge, lighting and pumps from one central setup instead of a collection of separate chargers and inverters.

Monitoring and Integration

In addition to the 48 V DC cabling, there is also a CAN data connection between the B4810 and the RV5. The BMS in the B4810 continuously reports how much energy is available, what currents are flowing and where the limits are; the RV5 adjusts its charge and discharge strategy accordingly. Via Bluetooth and the app you can keep an eye on voltage, state of charge and temperature yourself, without having to access the battery directly. This way, the B4810 becomes not just a large energy reserve, but the 48 V foundation of a system you can design, expand and control yourself in a clear and structured way.

Versatile Power for Any Scenario

Off-grid living, RV journeys, home backup, or life on the water, BLUETTI batteries provide reliable power to keep you connected, your devices charged, and everything running smoothly.

Monitor Your Power With Ease

With the BLUETTI app, check your battery's State of Charge (SoC), voltage, temperature, and remaining charge or discharge time — all with just a glance. Everything you need to stay informed, right at your fingertips.

Quick Recharge, Flexible Charging

Power up your BLUETTI LiFePO₄ batteries effortlessly through a wall outlet, solar panels, or a generator. No matter your setup, get back to full power faster and more conveniently than with traditional batteries.

Specifications

Battery Info

• Battery Capacity 5,120Wh (51.2V, 100Ah)
• Battery Type LiFePO₄ (Lithium Iron Phosphate)
• Cycle Life 6,000 cycles @ 70% capacity

Charging & Discharging

• Charge Current 50A (Recommended) 100 A Max.
• Discharge Current 100A Max.
• Peak Discharge Current 200A @ 30 s
• Cell Temperature Protection
  • Charging: <-1°C or >61°C (<30°F or >142°F),
  • Discharging: <-21°C or >61°C (<-5.8°F or >142°F),

General

• Weight Approx. 101.4lbs (46kg)
• IP Rating IP65
• Operating Temperature
  • Charging: -20°C to 55°C (-4°F to 131°F)
  • Discharging: -20°C to 55°C (-4°F to 131°F)
• Storage Temperature
  • Up to 1 month: -20°C to 40°C (-4°F to 104°F)
  • Up to 6 months: -20°C to 25°C (-4°F to 77°F)
• Dimensions (L × W × H) 23.94 × 14.96 × 5.71in (608 × 380 × 145mm)
• Max. Expansion (Parallel & Series) 122.88kWh (24P) 51.2V, 2,400Ah
• Certifications MSDS, UN38.3, FCC, CE, RoHS, UL

What's in the Box

• B4810 LiFePO₄ Battery x 1
• Ethernet Cable x 1
• M8×20 Bolt(for locking cables) x 2
• M5×10 Bolt x 8
• M8×20 Bolt x 12
• M8×30 Bolt  x 2
• M8×1.4 Flat Washer x 2
• M8 Spring Washer x 2
• M12×12 Headless Bolt x 2
• M8 Nut x 2 
• Mounting Bracket x 4
• ST8 Wood Screw x 8
• User Manual & Warranty Card x 1

Warranty Period

• BLUETTI warrants that the product will be free from defect in workmanship and material to the original consumer purchaser.
• The warranty period starts on the date of purchase by the original consumer purchaser,  
• For the product of portable power station, the warranty period varies from 24 months to 72 months.
• For the product of home backup system, the warranty period varies from 48 months to 60 months.
• For the product of solar panel and accessories as cable, charger etc, 12 months is provided for the warranty service.
• No warranty for gifts product and Warranty period may vary by country subject to local laws and regulations. 

Warranty Statement 

• Any defects in material, workmanship of your product will be covered after you provide any valid proof of purchase and information including but not limited to:
• A purchased order number made through BLUETTI official stores.
• Sales invoice or order confirmation email that clearly shows the description of the product, its price, and sales channel.

Note: The limited warranty is restricted to the country of purchase. The warranty will be invalid on the items once they are taken or shipped to other countries.

Exclusions of Warranty

• Misused, abused, damaged by accident or damaged due to force majeure (e.g. lightning strikes, tornadoes, hurricanes, etc.);
• Unauthorised modification, repair, dis-assembly or operation not in accordance with the official instructions or manuals;
• Use for special application other than normal consumer use;
• Any defect or damage caused by exposure to excessive heat, cold, liquids or other external causes;
• Invalid proof of purchase;

Warranty period expired

• The battery model on the warranty certificate does not match the actual item
• Product wear and tear through the usage of time.

PLEASE NOTE:

• Free shipping is by dpd and only for addresses on mainland UK. All BT , Northern Ireland , Northern Scotland , Highlands BT / PH / IV / KW / AB / IM / Isles Postcode Delivery. postcodes will incur an additional £20.00 charge for delivery.

Additional Postage Payable for Shipping to

• Northern Ireland
• Highlands
• Northern Scotland
• Scottish Isles
• Isle of Man
• Orkney
• Shetland