The Jianbo Tech 12.8V 400Ah LiFePO4 Battery delivers 5120Wh / 5.12kWh of energy capacity for high-capacity deep-cycle applications.
With long cycle life, high continuous discharge capability and stable LiFePO4 chemistry, it is suitable for RV systems, solar energy storage, backup power, off-grid systems and other applications requiring extended runtime.
The 12.8V 400Ah configuration provides significantly more energy than standard 100Ah or 200Ah batteries, making it suitable for users who need longer operating time or larger connected loads.
12.8V nominal voltage
400Ah rated capacity
5120Wh / 5.12kWh energy
LiFePO4 battery chemistry
More than 2,000 cycles at 100% DoD
Up to 5,000 cycles at 80% DoD
Max. 125A continuous charging current
Max. 250A continuous discharging current
Max. load / inverter power up to 3200W
Long cycle life
High discharge capability
Low maintenance
Suitable for deep-cycle applications
OEM / ODM customization available
Suitable for larger RV and camper power systems requiring longer runtime for refrigerators, lighting, water pumps, TVs, laptops and other onboard appliances.
The 5.12kWh capacity makes it suitable for small off-grid solar systems, cabins, remote houses and other low-voltage solar storage applications.
Can provide extended backup time for lighting, communication equipment, home appliances and selected emergency power systems when paired with a suitable inverter.
Suitable for applications where grid power is unavailable or unreliable, including cabins, farms, remote monitoring systems and mobile installations.
Can be used as an auxiliary deep-cycle power source for selected marine applications, subject to system voltage, current and installation requirements.
Suitable for replacing selected high-capacity 12V AGM or GEL deep-cycle batteries where charging voltage, current, dimensions and system compatibility are confirmed.
| Specification | Value |
|---|---|
| Battery Type | LiFePO4 Battery |
| Nominal Voltage | 12.8V |
| Rated Capacity | 400Ah |
| Rated Energy | 5120Wh / 5.12kWh |
| Charge Voltage | 14.2V–14.6V |
| Cycle Life | >2,000 cycles at 100% DoD; up to 5,000 cycles at 80% DoD |
| Max. Continuous Charging Current | 125A |
| Max. Continuous Discharging Current | 250A |
| Max. Load / Inverter Power | 3200W |
| Weight | 39.5 kg / 87 lb |
| Charging Temperature | 0°C to 50°C / 32°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 |
| Dimensions | 520 × 269 × 220 mm / 20.47 × 10.59 × 8.66 in |
This battery provides approximately 5.12kWh of rated energy.
| Load | Approx. Theoretical Runtime |
|---|---|
| 200W | 25.6 hours |
| 500W | 10.2 hours |
| 1000W | 5.1 hours |
| 2000W | 2.6 hours |
| 3000W | 1.7 hours |
Actual runtime depends on inverter efficiency, temperature, battery condition, depth of discharge and load characteristics.
Jianbo Tech supports OEM / ODM battery solutions for distributors, wholesalers and project customers.
Customization options may include:
Custom logo and labels
Custom packaging
BMS configuration
Bluetooth monitoring
Heating function
Terminal configuration
Housing color
Voltage and capacity customization
