36V 10AH 20AH Ebike Battery, Lithium Battery Pack Power with Charger,50A BMS for 350W 500W 1000W e-Bike Motor

These are probably the 7th and 8th LiFePO4 batteries I've purchased from this seller. The only seller I know who will put 50A BMS boards in smaller packs; absolutely essential for small electric vehicles using bigger motors, as I've fried a number of 20A boards in my day. Once I received a pack with a bad cell, and seller made good on the situation in a prompt manner. Seller is reponsive to inquiries. As a tip for buyers, consider using marine/automotive silicone glue with (opt) silicone panels to seal the ends in order to minimize any potential water entering the pack. The cell pouches are waterproof but the BMS is not. Mount pack in protected location. Also, don't forget to install a fuse holder on the red lead before installing your connectors. LiFePO4 is heavier than LiPo or LiIon, but it is not likely to burn down your house. Additionally, fully charging this battery chemistry does not shorten their life the way that it does with LiPo or LiIon so they are easier to deal with and give you the range you expect every time.

I installed this in my son's razor ground force drifter with an upgraded 36v speed controller and motor, it rips hard. It allows my son to hold big high speed drifts. He can hang the tail out longer without running out of RPMs. And he can now break traction from a standstill. Something he couldn't do with the stock 24v setup. The ride time is insane too, he's ridden it for over an hour and he tires out before the battery dies, in fact, he hasn't been able to kill the battery in a single session. The included battery charger it awesome too, charges the battery very fast and the included connectors are heavy duty too. Their customer service is top notch, buy with confidence. Would definitely buy again.

I would have given at 5 stars, it is a good battery pack, however in my situation I have to be careful with a fresh charge. Must go easy to the voltage drops a little bit. 41 volts fully charged. My control on the scooter kicks out on high power but is fine on low. If you get this pack know the first charge will not last long after that it will be ok.

Put this in a razor Mx 650. Have yet to kill the battery. Kids ride around for hours.

Really powerful battery pack.