NERMAK 12V 16Ah Lithium LiFePO4 Deep Cycle Battery, 2000+ Cycles Lithium Iron Phosphate Rechargeable Battery for Solar/Wind Power, Lighting, Scooters, Power Wheels, Fish Finder, Built-in 16A BMS

This is an exact size and connector replacement for the common 12V 12Ah lead acid gel-cell. Everything fits just right and it has about a 1/3 more stored energy than the older lead acid technology at 1/3 less weight. It’s only drawback is the discharge curve. Unlike a lead acid battery which just tapers away as it discharges, this battery just keeps delivering like it’s at peak of charge then knees over very rapidly. Consequently your old technology state of charge indicator will not give you a reliable measure of how much energy you have left; “full, full, full, full, 3/4, dead”.

So far so good. This is the second battery I buy from this vendor, and after observing good performance over a year or so, I felt compelled to write a review. The first battery was used for a kids ride on jeep running at 12V. This second battery was to upgrade that same ride on toy to 24V by connecting to the older battery in series. It seems the overcharge, overvoltage, and fault protection in the BMS circuit actually works. We have done all of the above and it still works. I didn't do a formal leakage test, but I know for a fact that it holds charge well over decently long periods of time and cold weather. As long as they don't change their process and material, it's totally good value for your money.

I tried to go cheap with another pair of batteries for my electric scooter. After two months or so, they would last maybe half the day. I bought these NERMAK batteries to replace those, charged them over the weekend and they are still going strong! Love 'em! ~~~~~~~~~~~~~~~~~~~~~~~~~ Okay, quick update. I've had these batteries for a month. I really liked their performance initially. However, I was tooling around in Lowes Depot in my mobility scooter and my scooter just dies! No lights on the panel at all. I checked the battery connections in the battery box and they were fine. That was my first suspicion. Good thing I kept my old, lead-based batteries that these replaced. I put those back in the battery box and everything fired right up. There is clearly an issue with these batteries. There is no obvious problem with the batteries, no marred area, burn marks, etc. Again, I've had these batteries just long enough that I will be unable to return them. Another issue that I have is that I just ordered another set of batteries for a different scooter - I've got a fleet of them. I haven't installed the latest set yet. I should probably start the return process now.

I purchased on of these 12V 16ah batteries for my solar pond and everything was great for 3 months and the battery stopped holding a charge properly. I contacted the company, and even before I received a reply, there was a replacement battery at my door!!! Amazingly fast and responsive customer service!!!! The replacement battery seems fine, I will update. I would certainly recommend them!

Just ordered this for my daughters offbrand Power Wheels Jeep and man, this thing is so light and holds a charge for a lot longer than her other 12v battery. (16Ah is to thank for that I’m sure). I haven’t tested it to see how long exactly it works, but we made it to the store and grandmas and back the long way which was our destinations so that’s all I needed. Thanks!

Worked fantastic for my mom's scooter! We went to a many hours long wedding with a large reception and the battery was still at full charge at the end.

Holds a charge ok, could be better though

It was only 1 year life…. Very disappointing.