RELiON RB12 LiFePO4 Lithium Iron Phosphate 12V Battery
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Light on Weight Heavy on POWER. RELiON RB12 is a LiFePO4 (lithium iron phosphate) 12V battery designed for reliable, maintenance-free performance on land or water.
Key Features
- LiFePO4 lithium iron phosphate chemistry
- Nominal voltage: 12.8V
- Nominal capacity: 12Ah (energy storage: 128Wh)
- Full power available throughout discharge; voltage does not drop like lead-acid
- Maintenance-free operation: no watering, no corrosion; plug, play, and charge
- Designed to store safely and withstand harsh temperatures and conditions
- Built-in protection via BMS (including discharge/over-current protections)
- Enclosure protection rated IP66
- Safely operational up to 149°F (65°C)
- Installation flexibility: can be installed upright or on its side
- Charge voltage range (recommended): 14.2V–14.6V
- Recommended low voltage disconnect: 11.0V
Intended Use
- Marine/RV power systems
- 12V mobility applications
- Recreational vehicles and auxiliary power setups
- Off-grid and backup power (where a 12V LiFePO4 battery is appropriate)
Product Details
- Title identifier: RELiON RB12 LiFePO4 Lithium Iron Phosphate 12V Battery
- SKU: 569-RB12
- Battery type: LiFePO4 (lithium iron phosphate)
- Nominal voltage: 12.8V
- Nominal capacity: 12Ah
- Energy: 128Wh
- Recommended low voltage disconnect: 11.0V
- Recommended charge current: 0.5A–5A
- Maximum continuous discharge current: 10A
- Peak discharge current: 20A (7.5s ±2.5s)
- Charge voltage (recommended): 14.2V–14.6V
- BMS charge voltage cut-off: 15.6V (3.9 ±0.025V per cell)
- Reconnect voltage: 10.0V (2.5 ±0.1V per cell)
- Discharge temperature range: -4 to 140°F (-20 to 60°C)
- Charge temperature range: -4 to 113°F (-20 to 45°C)
- Recommended storage temperature: 23 to 95°F (-5 to 35°C)
- Mechanical: dimensions (L x W x H) 5.9 x 3.9 x 4.0 in (151 x 98 x 101 mm)
- Mechanical: weight 3.6 lbs (1.65 kg)
- Terminal type: F2
- Case material: ABS
- Enclosure protection: IP66
- Compliance/shipping classification (battery): UN 3480, CLASS 9
Parts Desk Insights
Best Use Case: A strong choice for 12V applications that benefit from LiFePO4’s maintenance-free operation and stable output during discharge—especially where temperature performance and safe storage matter.
Common Issues: For best results, verify your charging setup matches the LiFePO4 charge voltage range and that your installation allows proper ventilation and secure terminal connection. If you’re replacing a lead-acid battery, confirm system voltages and low-voltage cutoff behavior to avoid premature shutdown.
Related Products & Accessories
Browse related Batteries & Power Storage to complete the installation.
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.