RELiON RB100LT LiFePO4 Lithium Iron Phosphate 12V Battery, Group 31
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The RELiON RB100LT is a 12V LiFePO4 (lithium iron phosphate) battery in Group 31, engineered for dependable deep-cycle power with cold-weather charging performance. It’s designed for marine and off-grid life on land or water, with maintenance-free operation and consistent voltage output.
Key Features
- LiFePO4 lithium iron phosphate chemistry (RB100-LT / Low Temperature model).
- Group 31 form factor for 12V deep-cycle use.
- Cold-weather focused performance for charging in low temperatures (LT series).
- Lightweight design: substantially lighter than comparable lead-acid batteries.
- Maintenance-free operation (no watering required).
- Full power availability throughout discharge (per manufacturer description).
- 100% usable capacity claim (per manufacturer description).
- Partial state of charge tolerance (per manufacturer description).
- Safely operational up to 149°F (65°C) (per manufacturer description).
- Can be installed upright or on its side (per manufacturer description).
Intended Use
- 12V deep-cycle battery systems (marine/boating).
- RV, trailer, and other 12V leisure/off-grid applications.
- Solar power storage systems requiring LiFePO4 deep-cycle capability.
- Electric vehicle auxiliary/12V power use where a Group 31 size battery is specified.
Product Details
- Preserved title details: RELiON RB100LT LiFePO4 Lithium Iron Phosphate 12V Battery, Group 31.
- SKU: 569-RB100LT.
- Battery type/chemistry: LiFePO4 (lithium iron phosphate).
- Voltage: 12V (12.8V nominal rating per manufacturer datasheet).
- Capacity: 100Ah.
- Energy: 1280Wh.
- Battery group: Group 31.
- Low-temperature (LT) model: designed for cold-weather charging performance; LT line includes RB100-LT.
- Safe operating temperature (manufacturer statement): up to 149°F (65°C).
- Installation orientation (manufacturer statement): can be installed upright or on its side.
Parts Desk Insights
Best Use Case: Choose this RB100-LT when you want a maintenance-free 12V LiFePO4 deep-cycle battery and expect cold-weather conditions where reliable charging performance matters.
Common Issues: If you’re switching from lead-acid, ensure your charging setup is compatible with LiFePO4 and that you’re using the correct charge profile for the battery. Also confirm the intended battery location provides appropriate ventilation/clearance and that terminal connections are clean and securely fastened to avoid voltage drop under load.
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- Explore Batteries & Power Storage - Browse the collection for compatible charging, monitoring, and battery accessory options.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.