ExpertPower 12V 5Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2500-7000 Life Cycles & 10-Year Lifetime | Built-in BMS | Perfect for RV, Solar, Marine, Overland, Off-Grid Applications

Great little battery. Using it to power an FT-817ND amateur radio. It holds up for several days of active use. No problems with the battery at all to date. Good price and a good product. My bigger battery ran out for my FT-891 and this little battery stepped in for a while at 100w and lasted for over an hour, so it definitely punches well above its weight.

I installed this in a MyQ garage door opener to replace the 4.5 MAh lead-acid battery it comes with. This ExpertPower 5 Mah battery is slightly wider than the 4.5 Mah lead-acid version, however it did slide into the device with just enough room with the wires. Lastly, I had to grind down the negative terminals on the ExpertPower batteries to make them narrower for fitting into the terminals on the garage door opener. Even though I didn’t like doing this I was able ti size them down enough to fit. The batteries do power the garage doors well when disconnected from AC power. I expect great longevity from these batteries.

FIrst battery arrived would not charge. Amazon replaced it immediately. Second battery seems FINE. Time will tell.

Well, I reviewed a lot of batteries, and this one is the worst of them all. I bought this battery a while ago but didn't have time to test it. I charged the battery according to the specifications with a Victron charger and connected my meter without any load and as you can see the voltage dropped from 9V to 8.57V in just a few seconds. You’d think that the Undervoltage Protection should prevent the battery from going below 10.6V but it wasn't the case here. I tried contacting their customer service via the form provided by Amazon and got no response. I then sent them an email. They responded and asked me to provide some evidence. In the next email, they asked me to provide them with my shipping address. And only after that, they told me that I have to pay for the return. They claim you have a “10 years lifetime warranty” but you’ll have to send your defective battery back. This battery is highly overpriced. You can get 6 or 7Ah batteries from other brands for half-price. If I pay for the shipping the total cost of this battery will be enough to buy 20Ah from Chins. I don't know about you, but I will never buy anything from this company ever again. I refused to pay for the shipping and now I am stuck with a dead battery.

Powers a 20 watt transceiver for 8 hours of heavy usage during ARRL Field Day.

The product was much lighter than the original one and way better! Also had full charge when installed (which is not common for most batteries). I love it and highly recommend it!

I use these to replace the SLA for more longevity. Works great and lightweight, and I will get a much greater lifetime than the older SLA.

As described