The SurLonPower 12.8V 320Ah LiFePO4 Lithium Battery is a high-capacity deep-cycle energy storage solution with 4096Wh of usable energy. Designed for RVs, boats, solar systems, off-grid applications, camping, home backup power, and other demanding energy storage needs, this battery delivers stable and reliable performance.
Equipped with a 200A Battery Management System, Bluetooth monitoring, low-temperature protection, and an integrated self-heating function, this 12.8V lithium battery is designed for safe, efficient, and convenient operation in a wide range of environments.
LiFePO4 lithium iron phosphate battery technology
12.8V nominal voltage and 320Ah rated capacity
4096Wh total energy capacity
Up to 4P4S expansion for higher voltage and capacity requirements
4000 cycles at 100% depth of discharge
6000 cycles at 80% depth of discharge
Up to 15,000 cycles at 60% depth of discharge
5-year warranty for long-term reliability
Built-in 200A intelligent Battery Management System
Maximum continuous output power of 2560W
Maximum continuous charge and discharge current of 200A
1000A maximum discharge current for 1 second
Bluetooth monitoring function
Integrated self-heating function
Low-temperature charging and discharging protection
IP65-rated ABS housing for enhanced protection
Suitable for parallel and series connection
With a rated capacity of 320Ah and total energy of 4096Wh, the SurLonPower battery provides extended runtime for various electrical devices and power systems. It is suitable for applications that require dependable energy storage over long periods, including RV travel, marine power, solar energy storage, off-grid cabins, emergency backup, and outdoor equipment.
The battery can be expanded up to 4P4S, allowing users to build larger battery banks for higher voltage, increased capacity, and more demanding energy storage systems.
Built with LiFePO4 cell technology, this deep-cycle lithium battery is engineered for long-term use:
4000 cycles at 100% DOD
6000 cycles at 80% DOD
15,000 cycles at 60% DOD
The battery is backed by a 5-year warranty, providing added confidence for residential, commercial, mobile, and renewable energy applications.
The integrated 200A Battery Management System helps monitor and protect the battery during charging and discharging. It supports a maximum continuous charge current of 200A and a maximum continuous discharge current of 200A.
The battery supports a maximum continuous output power of 2560W and can provide up to 1000A of discharge current for 1 second, making it suitable for systems with higher starting or peak power demands.
The built-in Bluetooth function allows users to monitor important battery information through a compatible mobile device, such as battery status, voltage, current, and operating conditions.
The integrated self-heating function helps improve charging performance in cold environments. The heating temperature range is from -20°C to 5°C (-4°F to 41°F), with an approximate heating time of:
70–90 minutes when starting from -10°C / 14°F
100–150 minutes when starting from -20°C / -4°F
The battery is designed for operation in a wide temperature range and includes automatic low-temperature protection:
Charging temperature: -20°C to 50°C / -4°F to 122°F
Discharging temperature: -20°C to 60°C / -4°F to 140°F
Storage temperature: -10°C to 50°C / 14°F to 122°F
Automatic discharge shutoff: below -20°C / -4°F
Automatic charge shutoff: below 0°C / 32°F
Automatic charging recovery: at or above 5°C / 41°F
These protection functions help reduce the risk of battery damage caused by charging or discharging in unsuitable temperatures.
The battery uses a durable ABS housing with an IP65 protection rating. The robust enclosure helps protect the internal components from dust and water spray, making it suitable for use in RVs, boats, solar installations, outdoor power systems, and other protected environments.
The compact housing features convenient side handles and M8 × 16mm terminals for easier installation and connection.
The SurLonPower 12.8V 320Ah LiFePO4 battery is suitable for:
RVs and campervans
Boats and marine power systems
Solar energy storage systems
Off-grid cabins and remote power systems
Camping and outdoor equipment
Trolling motors
Home backup power
UPS and emergency power systems
Telecommunications equipment
Security and monitoring systems
DC power systems and mobile applications
| Item | Specification |
|---|---|
| Brand | SurLonPower |
| Cell Type | LiFePO4 |
| Nominal Voltage | 12.8V |
| Rated Capacity | 320Ah |
| Energy | 4096Wh |
| Warranty | 5 Years |
| Cycle Life | 4000 cycles at 100% DOD; 6000 cycles at 80% DOD; 15,000 cycles at 60% DOD |
| Maximum Expansion | 4P4S |
| Internal Resistance | ≤40mΩ |
| BMS Rating | 200A |
| Maximum Continuous Output Power | 2560W |
| Maximum Continuous Charge Current | 200A |
| Maximum Continuous Discharge Current | 200A |
| Maximum Discharge Current | 1000A for 1 second |
| Charge Method | CC/CV |
| Charge Voltage | 14.4 ± 0.2V |
| Recommended Charge Current | 64A |
| Bluetooth | Yes |
| Self-Heating | Yes |
| Low-Temperature Protection | Yes |
| ComFlex | Not included |
| Terminals | M8 × 16mm |
| Housing Material | ABS |
| Protection Class | IP65 |
| Approximate Weight | 57.3 lbs |
| Dimensions | 14.49 × 7.44 × 10.04 in |
| Certifications | FCC, CE, RoHS, UN38.3 |
The battery uses the CC/CV charging method. The recommended charging current is 64A, with a charging voltage of 14.4 ± 0.2V.
For safe and reliable operation, use a compatible lithium battery charger, solar charge controller, and inverter. Always verify system voltage, current limits, wiring, and connection requirements before installation.
The SurLonPower 12.8V 320Ah LiFePO4 battery combines high energy capacity, long cycle life, intelligent battery protection, Bluetooth monitoring, and cold-weather self-heating in one reliable energy storage solution.
With 4096Wh of energy, a 200A BMS, 4P4S expansion capability, IP65 protection, and a 5-year warranty, it is an excellent choice for RV power, marine applications, solar energy storage, off-grid living, and backup power systems.
SurLonPower 12.8V 320Ah 4096Wh LiFePO4 Lithium Battery
Shop the SurLonPower 12.8V 320Ah LiFePO4 lithium battery with 4096Wh energy, 200A BMS, Bluetooth, self-heating, IP65 protection, and 5-year warranty for RV, marine, solar, off-grid, and backup power systems.
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