ExpertPower6 Pack 12V 10Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery | 2500-7000 Life Cycles & 10-Year Lifetime | Built-in BMS

So far still under testing but it is holding on. Hope last few years!

I bought 2 of these batteries to build a back up power supply for two applications. The first was to run my small QRP ham station in a box that was intended for use during hurricane season here in Florida and the second was to power my cable modem when the power went out (happens a lot here in Florida). The batteries, installed in a plastic box, (purchased from Amazon) worked excellent for either purpose. However, one day, they simply stopped working. (zero output) While unsure of the actual failure I suspected I had shorted them our during charging and felt sure I now owned two bricks.I sent a note to the company and during a long series of exchanges i found that the built in BMS likely went into a safety mode and if I put a small charge at 14.4 VDC i might recover them.Sure enough the Batteries came back to life and they work perfect.I sure never expected that .... I asked for and received the specifications for the BMS. After reading the specs and further discussions with their tech in California I found there were numerous protections built in and the price for the batteries is very justified. Definitely would recommend them.

When I received these one battery was completely dead out of the package. The team at Amazon was fantastic and made it right but I would hesitate to buy from this manufacturer ever again.

Ordered 2 sets of the 2 pack of 10ah LiFe batteries. 1st set came everything seems good, the batteries look like they are new, came packaged well, covers on the terminals the whole 9 yards, volts (without load) reads good.Second "set" came a few days later. Only 1 battery came, case is all scuffed and looks like it was a used battery, packaging was terrible, just a battery in a large box with a tiny bit of bubble wrap in it, battery was not in it's own box like previous batteries and didn't have covers on terminals. The battery has a date written on it with permanent marker for some reason, Non load voltage reads 0.10 volts.... Complete junk now i have to waste my time and process this return and send it back.

Light weight, discharge was smooth, recharged timely. I use for portable power for telescope and ham radio. So far they perform better than heavy gel cells. Hope they live up to their longevity claim, because they are more costly than other battery types.

Do not Buy...!I was Happy for about 4 weeks..!They told me to return themI did not , I'm not in the US anymoreI'm writing this review after 1 ½ years because for some reason I put them away.Today I was in the mud , so I tried to charge them again with other slow charger , did to work , son this $170.00 are now in the recycling bin

I had to use "fillers" to take up space inside the battery-pack. The batteries work well and are MUCH less heavy than the gel batteries.

worked for what I needed