Its my favourite Liion cells 21700 Tesla style size for collecting a batteries and packs for mobile application. Its a tested many times, gives high amps output, low inner resistance and has a capacity of 4000mAh which is great. One of the best chineese Liion batteries for this price around 3,5 USD per cell its 15Whours its just around 0,25 cents per Wat hour. Great use for Ebikes, tricycles and electric scooters atc.
Nice high drain and also high capacity LiIon 21700 batteries valuable for electric scooters and boards or electric bicycles, hooverboards atc. Its low internal resistance means that you can use it up to 20Amps per single line of cells without worries to overheat it. Its very good ballance between the power and price also. I will build an high capacity battery for 1000W electric scooter to replace original Lead acid batteries.