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RELiON RB20 | 12V 20Ah | LiFePO4 Lithium-ion Battery | 3500~5000 Cycles | 10 Year Warranty | Lightweight small size, Perfect for Fish Finders, Ice Fishing Solar, RV, Off-Grid Applications

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$219.95

$ 97 .99 $97.99

In Stock

1.Style:12ah


About this item

  • MAINTENANCE FREE: Plug, play, and charge. No watering, no corrosion.
  • LONG LIFE: RELiON lithium batteries provide up to 10 times longer life than lead-acid batteries, and they still provide 80% of the rated capacity after 3,500 cycles.
  • PARTIAL STATE OF CHARGE TOLERANT: Partial state of charge, known as PSOC, which is a killer of lead-acid batteries, does not affect performance or battery life of a lithium battery. Sometimes batteries don’t get fully charged, or they regularly operate in a partial state of charge. Either way, you can count on RELiON lithium batteries living a long and productive life.
  • ECO-FRIENDLY & SAFE: RELiON lithium batteries are the ultimate clean energy. No gassing, no fumes, and no pollution. Enjoy reliable power, while protecting the environment, using these non-hazardous batteries.
  • LIGHTWEIGHT & EASY TO TRANSPORT: Compared to other battery chemistries, RELiON LiFePO4 batteries provide the same or greater energy at less than half the weight and size. This means more flexibility and ease of use!


The RB20 lithium iron phosphate battery provides ample power for high amp draw electronics or in outdoor recreational use where lighter weight and capacity are key. It's commonly used in fishing electronics, robotics, solar lighting, remote power and other deep cycle applications.


John Smith
Reviewed in the United States on April 9, 2025
The only thing you can Reli-on is that if this battery discharges it will not "wake up" from BMS mode. I bout 4 of these for my boat, within the first year, we had one go into BMS low voltage protection on the water during heavy use of the trolling motor and couldn't "wake it up" so they had to replace it. Then in the second year while at the dealership they didn't plug the batteries in and another battery went into BMS for low voltage. After many attempts and time with customer service we couldn't get them to wake up and begin to charge. The last time was mid summer when fishing season was in full swing and this time in spring time right as it's starting. Missed 3 weeks for the first exchange and now maybe another 3 weeks for this one a shame to spend all this money and miss 6 weeks of prime fishing because the BMS system is faulty. Probably best to find another brand to go with I've used other brands in the past with no issues, if the battery went into BMS low voltage protection. I've always been able to wake them up and charge but not this brand.
Fast delivery. Good product
Reviewed in the United States on April 2, 2025
Good so far but I haven’t had it long enough to give a review. Have heard a few reviews from a pro fisherman that said some people have had issues with these batteries. I’ll have to see if it last 6-8 months. If so it should be ok
brent myster
Reviewed in the United States on June 19, 2024
Didn’t come with the three terminals!
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