RELiON RB80 LiFePO4 Lithium Iron Phosphate 12V Battery, Group 27
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The RELiON RB80 is a 12V, 80Ah LiFePO4 (lithium iron phosphate) battery built for demanding marine and off-grid use where weight, reliability, and cycle life matter. Designed around a standard Group 27 form factor, it’s maintenance-free and intended for deep-cycle power—supporting dependable performance for your house, auxiliary, and trolling applications.
Key Features
- 80Ah deep-cycle capacity in a Group 27 size
- LiFePO4 (lithium iron phosphate) chemistry
- Maintenance-free design for simplified ownership
- LiFePO4 charging guidance: use a LiFePO4-compatible charging profile to avoid charger/BMS issues
- Low-temperature efficiency: RELiON positions LiFePO4 batteries for improved performance in cold conditions
- Part of RELiON’s Group 27 RB series (RB52/RB75/RB80/RB100) product family
Intended Use
- Marine house/auxiliary power systems
- Trolling motor battery banks
- RV and off-grid power
- Solar/off-grid storage (with compatible charge equipment)
- Deep-cycle applications requiring a 12V LiFePO4 battery
Product Details
- Brand/Model: RELiON RB80
- Type/Chemistry: Lithium Iron Phosphate (LiFePO4)
- Voltage: 12V
- Capacity: 80Ah
- Group size: 27
- Part number: RB80
- Weight: 10.16 kg (22.4 lb)
- Hazmat: Yes (lithium battery shipping restrictions apply)
- Variant SKU: 569-RB80
- Variant barcode on listing: omitted (not safely verifiable due to scientific-notation formatting)
Parts Desk Insights
Best Use Case: Choose the RB80 when you want LiFePO4 deep-cycle power in a Group 27 battery compartment and you have (or can add) charging equipment that supports LiFePO4 charge profiles (battery/BMS behavior is sensitive to incorrect charger algorithms).
Common Issues: The most common problems are charger-related—using a flooded/AGM-style lead-acid charge profile on LiFePO4 can trigger BMS disconnects or charging errors. Also confirm your system is designed for deep-cycle use (house/aux loads) and that the battery compartment can accommodate the RB80’s Group 27 size and mounting orientation.
Related Products & Accessories
- Browse Lithium Battery Charging Accessories - Pair your LiFePO4 battery with compatible charging accessories from the Electrical & Accessories category.
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.