Product Description
Cold-Weather Protection for LiFePO4 Batteries
This Lithium Battery Warmer is purpose-built for one critical lithium battery problem: LiFePO4 batteries cannot safely charge below 32°F. When temperatures drop, the battery’s BMS shuts down charging to prevent permanent cell damage—leaving systems offline when power is needed most. This heater solves that problem by maintaining a safe operating temperature so charging can continue without interruption, all season long—automatically.
Designed for lithium battery systems used in RVs, off-grid solar, backup power, and mobile applications, the OGPP Battery Heater keeps LiFePO4 batteries warm enough for normal charging behavior without user intervention. Automatically ensuring charging performance, capacity availability, and long-term battery health.
Key Features
- Charging Protection – Prevents BMS charge lockout by maintaining temperatures above freezing.
- Automatic Operation – Activates as temperatures drop, no user intervention required.
- Low Power Draw – Efficient heating minimizes energy consumption from the battery at only.
- Mobile and Fixed Installations – Built to handle vibration, enclosed spaces, and harsh environments.
- Broad Compatibility – Also suitable for AGM and flooded batteries when cold protection is needed.
- Standard & Custom Sizes – In stock for BCI Group 24, 27, 31 batteries, 3-4 week lead time on custom sizes.
Why Warm a Lithium Battery?
LiFePO4 batteries offer outstanding cycle life and performance—but cold-weather charging limits are non-negotiable. Without a heater, charging simply stops, often at the worst possible time. This battery heater eliminates that failure point by keeping batteries within their safe charging range, allowing the BMS to operate normally.
Simple installation, automatic operation, and lithium-focused performance make it an essential component for anyone running LiFePO4 batteries in cold climates.
Single or Dual Elements?
Each element draws .5 amps from the battery for 6 watts of heat. Due to the higher density of flooded and AGM batteries, a second heating element will be needed when used for those applications. A second heating element can be also be added* to lithium applications for extreme cold or situations where batteries are more exposed to the elements and need extra warmth.
*GC2 kits have 2 elements included.
Group Sizes
Many manufacturers lump their batteries into the nearest group size despite being 1"+ different in one or more dimensions from actual BCI group measurements. These insulating jackets do not stretch so if your total circumference exceeds the numbers below, it will NOT likely fit. Please check actual battery dimensions to ensure proper fitment. Please allow 3-4 weeks for U1, GC2 and custom sizes to be made.
Dimensions the insulating jackets are intended for (L x W x H):
- Group U1 - 7.75" x 5.3" x 7.5"
- Group 24 - 10.2" x 6.2" x 8.8"
- Group 27 - 12.1" x 6.8" x 8.8"
- Group 31 - 13.0" x 6.8" x 9.0"
- Group GC2 - 10.3" x 7.2" x 10.5"
- Custom - Max of 13.0" x 8.0" x 12.0"
Need to Keep a 24V, 36V or 48V Battery Warm?
These heating elements are rated for 12 volts, but a simple Voltage Reducer can be installed to run these heaters off higher voltage batteries. Click the link to view details on these voltage reducers.
Operational Notes
- LED on switch indicates switch position, not heating element status. Heating element will turn on/off automatically as needed based on temperatures. Heating element will not produce any heat if tested at room temperatures.
- Heating element has been redesigned so thermostat is now internal to the element. Older pictures and videos on the internet may show an external thermostat that is no longer used.
- NOT for use in wet environments.
If you need additional warmth or Replacement Heating Elements, follow the link.
