12V 165Ah Self-Heating LiFePO4 Battery with Bluetooth
Power RVs, solar systems and off-grid equipment through every season with a high-capacity Group 31 lithium battery designed for cold-weather charging. This 12.8V 165Ah LiFePO4 battery combines 2112Wh of energy, a 165A smart BMS, dual-mode self-heating and secure Bluetooth monitoring in a compact, durable enclosure.
Why Choose This 12V 165Ah Lithium Battery?
• 2112Wh high-capacity energy storage for RV appliances, marine electronics, solar loads and home backup
• 165A BMS delivers up to 2112W continuous power and protects against overcharge, over-discharge, overcurrent, overheating and short circuits
• Dual-mode self-heating enables safer charging during freezing weather
• Bluetooth battery monitoring with password-protected access for voltage, current, temperature and state-of-charge data
• Group 31 battery size offers drop-in-friendly dimensions for many RV, boat and off-grid installations
• Low-temperature charge and discharge cut-off helps protect LiFePO4 cells in winter
• IP65 water- and dust-resistant ABS housing for demanding mobile and outdoor applications
• EV-grade LiFePO4 cells provide 4,000 cycles at 100% DOD, 6,000 cycles at 80% DOD and up to 15,000 cycles at 60% DOD
• Expandable up to 4P4S for flexible 12V, 24V, 36V and 48V lithium battery banks
Technical Specifications
Battery chemistry: LiFePO4
Nominal voltage: 12.8V
Rated capacity: 165Ah
Stored energy: 2112Wh
BMS rating: 165A
Maximum continuous output: 2112W
Maximum continuous charge current: 165A
Maximum continuous discharge current: 165A
Peak discharge current: 825A for 1 second
Charge method: CC/CV
Charge voltage: 14.4V ± 0.2V
Recommended charge current: 33A
Internal resistance: ≤40mΩ
Bluetooth monitoring: Yes
Dual-mode self-heating: Yes
Low-temperature protection: Yes
Protection rating: IP65
Terminal type: M8 x 16mm
Housing material: ABS
Approximate weight: 33.49 lb
Dimensions: 13 x 6.77 x 8.5 in (Group 31)
Cold-Weather Self-Heating Performance
The self-heating system operates between -4°F and 41°F (-20°C to 5°C) and requires at least 15A of charging current. Automatic charging recovery begins when the battery reaches 41°F (5°C) or above, helping protect the cells while supporting winter RV and off-grid use.
RV Lithium Battery Applications
Use this 12V 165Ah lithium battery for travel trailers, camper vans, motorhomes and RV house-power systems. Its 2112W continuous output supports common appliances and onboard equipment when paired with a compatible inverter and charger.
Solar and Off-Grid Battery Applications
Build a scalable solar battery bank for cabins, home backup, remote monitoring and off-grid energy storage. The 4P4S expansion capability supports systems up to 48V 660Ah when engineered with compatible components.
Marine House-Power Applications
Suitable for deep-cycle marine house loads, navigation electronics, lighting and auxiliary power. This model is not intended for engine starting.
Frequently Asked Questions
Is this a Group 31 lithium battery?
Yes. The enclosure measures approximately 13 x 6.77 x 8.5 inches, matching the widely used Group 31 footprint. Always check the installation space and terminal orientation before ordering.
Can this battery charge below freezing?
The built-in dual-mode self-heating system warms the cells in cold conditions before normal charging. Use a compatible LiFePO4 charger capable of providing the required heating current.
Can I monitor the battery from my phone?
Yes. Bluetooth monitoring provides real-time battery data and password-controlled access through a compatible application.
Can multiple batteries be connected together?
The battery supports configurations up to 4 in parallel and 4 in series when all batteries are the same model, age and state of charge and the system is designed correctly.
Can it start a car, outboard engine or golf cart?
No. This is a deep-cycle energy-storage battery. Do not use it as an automotive or marine starting battery, or as a golf-cart traction battery.
Important Installation Notes
Confirm charger, inverter, cable, fuse and system-voltage compatibility before installation. Final certifications, warranty terms, app compatibility and supplied accessories must be verified against ZXKJEnergy production documents before commercial shipment.
