NERMAK 12V 10Ah Lithium LiFePO4 Deep Cycle Battery, 2000+ Cycles Rechargeable Battery for Solar/Wind Power, Lighting, Power Wheels, Ride-on Toy, Fish Finder and More, Built-in 10A BMS

I recently purchased a battery from this seller, and while I initially encountered a problem with the product, their customer service team turned the situation around completely! Upon receiving the battery, I found that it had some faulty cells and a faulty Battery Management System (BMS). Naturally, I was disappointed, but I decided to reach out to their customer service team to see if they could help. To my surprise and delight, they responded promptly and with utmost professionalism. They apologized for the inconvenience and swiftly arranged a replacement. Not only did they send me a new battery, but they also used expedited shipping, ensuring I received it quickly. The new battery performs flawlessly, meeting all the specifications as advertised. I couldn't be happier with its performance, and it gives me peace of mind knowing that it's reliable and safe to use. I can't stress enough how much I appreciate the exceptional customer service provided by this seller. They turned a potentially negative experience into a positive one, and that level of dedication is hard to come by these days. In conclusion, I highly recommend this battery and this seller. Their products are of good quality, and their customer service goes above and beyond to ensure customer satisfaction. Thank you for the great experience!

Bought for peg perego ride ons. They work great and so much longer life than lead acid. They did charge fine with a 10amp charger without issue. So far so good. I do love how small and light lithium batteries are.

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 bought these batteries to replace two "high capacity" 9AH AGM batteries in my Razor e300 scooter. With the old batteries I had a maximum range of just over 2 miles on a full charge. The new batteries were an exact fit and easy replacement. To my amazement I now can go over 5 miles. How much over I don't know because I got tired of riding so I stopped. But it's nice to get home with power to spare. The old Razor charger works perfectly with the new batteries, and they charge quickly. Also, as mentioned by others, the batteries are very lightweight. I should mention that I had some issues at first. My range was "only" about 3.75 miles, and at least one of the batteries seemed to be cutting out toward the end of my ride. Apparently these batteries have a built-in Battery Management System that will not allow the battery to discharge beyond a certain point (or overcharge!) I suspect that the circuit in one of the batteries was cutting the power prematurely. The result is that my scooter would stop suddenly, then restart in a kind of stuttering action. Anyway, after a few charge/discharge cycles, that problem seems to be resolved and my range is much improved. I couldn't be happier!

Update 4 days later, 10/11/2024 Well...this did not work out. The battery arrived and was installed on Monday, just before Hurricane Milton struck Wednesday night. After a1/2 second test crank (which was fine), the battery was connected to a new LiFePo4 battery charger designed for this battery chemistry. The charger itself may be suspect, as the battery would not accept a charge. The charger displayed a fault mode after a few hours. I then connected it to a known good charger. After a charge of several hours at 2amps, the charger had to be disconnected as we prepped for the storm. A quick check on Tuesday (the next day) found that the generator would not start. Did not have time to do diagnostics with the storm coming. Had to pull-start the generator after we lost power Wednesday evening. Did diagnostics today, Friday 10/11. No problem with the starter motor, as it started immediately with my portable jumper pack. The Nermark battery showed less than 10V on my DVM. Both chargers displayed a battery fault, and were unable to charge the battery above 10.3V. It's possible there was an issue with the built-in BMS (Battery Management System), but I don't know. It's getting returned once Whole Foods is open again. Original Review 10/7/2024 Very simple installation to remove the old sealed lead acid 12-18 battery and replace it with this one. I have been using LiFePo4 batteries in my RC aircraft for over 20 years and I'm glad that this battery is available to replace the typical unreliable lead acid battery that is used as a starter in portable equipment. I took the opportunity to install the terminal rings and cable for the appropriate 3 amp charger and even without completing the charge, did a quick test start on my generator. I hope it will last several years, as this generator is only used for hurricane emergencies. However, I have batteries of this chemistry that are over 20 years old and still hold 80% or more of their charge. I will report back and update this review in the event that there are any failures, or possibly great news to continue to report years from now.

Battery arrived dead and un-chargeable. However, after contacting seller it was quickly replaced and the replacement was perfect. This has been a positive experience. Kudos to this seller. Thanks!

Perfect Deer Feeder Batteries and Great for Solar panel boxes. Keeps cameras going for months and Light weight!

So far I've been really happy with this battery. I bought it to be able to separate out my console unit from my cranking battery and it's worked great! I was a little apprehensive to buy it at first, because you hear people bad mouth cheaper lithium batteries, but it's been great so far! I'm very happy I bought it! I've gone out fishing several times and it's never ran dead yet during a trip. I've recommended this battery to several friends and other fisherman to run their units and I will keep recommending it!