12V 400Ah high-capacity RV LiFePO4 battery delivers 5120Wh huge energy storage, 90% deep discharge and 6000+ cycle life. Built-in upgraded BMS, supports long-term off-grid camping, runs RV air conditioner and high-power appliances all day, ideal for large RV and outdoor self-driving travel.
The 12V 400Ah high-capacity RV LiFePO4 battery has a rated energy storage of up to 5120Wh, specially designed for large RVs, modified camper vans and users who need long-term off-grid camping. Adopting upgraded thickened cells and reinforced shell, it has stronger anti-vibration and anti-shock performance, perfectly adapting to complex scenarios such as long-distance self-driving and no-man-land parking. Compared with 300Ah batteries, its energy storage capacity is increased by 33%. It can continuously power high-power equipment such as parking air conditioners, electric ovens and water heaters all day, completely getting rid of dependence on camp mains and generators and realizing real outdoor power freedom.
Core Advantages
Super Large Capacity & All-Day Off-Grid Power
With 5120Wh super large energy storage, it supports all-day uninterrupted parking power supply, meets the demand of simultaneous operation of high-power appliances for multi-person camping, and can keep the parking air conditioner running continuously for 6-8 hours, adapting to outdoor living without camps for more than a week.
Upgraded Protection for Complex Road Conditions
It adopts reinforced anti-vibration shell and thickened copper bar structure, matched with upgraded 250A BMS protection board, with stronger anti-shock, short-circuit proof and overload resistance. It is not afraid of vibration from driving on mountain roads and rough roads, and can work stably under high-temperature exposure in summer.
Stable Constant Voltage Output
No voltage drop during high-power start and stop with constant output voltage, avoiding problems such as light flickering, inverter tripping and electrical shutdown, ensuring long-term stable operation of refrigerators, air conditioners and precision vehicle equipment.
Low Self-Discharge
The monthly self-discharge rate is ≤3%. There is no need for frequent power supplementation when the RV is parked for one or two months, eliminating the problem of battery power loss before travel, and adapting to seasonal camping needs.
Technical Specifications
| Specification Item |
Parameters |
| Nominal Voltage |
12.8V |
| Nominal Capacity |
400Ah |
| Rated Energy |
5120Wh |
| Cycle Life |
6000+ Cycles (80% DOD) |
| Max Discharge Depth |
90% |
| Built-in BMS |
250A Upgraded Smart Protection Board |
| Max Charge Current |
120A |
| Max Discharge Current |
250A |
| Working Temperature |
-20℃ ~ 60℃ |
| IP Rating |
IP54 |
| Certifications |
CE, UN38.3, MSDS, RoHS |
| Warranty |
5-Year Professional Warranty |
Application Scenarios
Suitable for large self-propelled RVs, extended trailer RVs and in-depth outdoor self-driving camping scenarios. It can support the simultaneous operation of full sets of high-power equipment such as parking air conditioners, electric water heaters, microwave ovens, induction cookers and vehicle audio-visual systems, perfectly meeting the stable power needs of long-term off-grid residence, no-man-land crossing and long-distance self-driving travel for multi-person teams.
FAQ
Q1: What high-power appliances can the 12V 400Ah battery support?
A1: It can stably support 12V/24V parking air conditioners, electric water heaters, microwave ovens, induction cookers and other high-power RV appliances, meeting the full-scene power needs of outdoor camping.
Q2: Is it suitable for long-term off-grid camping without mains power?
A2: Yes. The 5120Wh large capacity supports 7-10 days of basic off-grid power use with solar charging cooperation, completely independent of camp mains power supply.
Q3: Can the battery work normally in low-temperature environments?
A3: It supports normal discharge at -20℃ low temperature, adapting to winter alpine camping and northern low-temperature outdoor scenarios, with excellent temperature adaptability.
Q4: Does the battery support Bluetooth monitoring?
A4: Optional Bluetooth 5.0 monitoring function is available. Users can check real-time power, voltage, temperature and charge-discharge data via mobile APP, realizing intelligent power management.
Q5: How to extend the service life of the 400Ah battery?
A5: Adopt 20%-80% conventional discharge range, match with professional solar controller and inverter, and avoid long-term full charge and deep over-discharge, which can extend the cycle life to more than 8000 times.
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