Airuxuan 52V Battery 52V Ebike Battery 20Ah Electric Bike Battery 52V Lithium Battery with 2A Charger, T-Plug, XT60 Connector and BMS for 250-1000W Electric Bicycles Motor

Used it on a 500w brushless kit. On low assist level, I can get about 70 miles per charge.

Works as advertised, just finished a 500 mile, 25K ascent, 7 day ride on my DIY Road bike, stood up against a new trek domaine electric bike. Performance wise they were similar. Each bike had a spare battery and switched out before the active one was close to depletionCan’t comment on long term performance yet. But no power drop off noted so far. Charger runs a little hot for my liking but no real issues. Overall quality excellent.

I do need to bring up a review of a picture taken of a pre dug hole of battery leaking out smoke or flames. The hole was pre dugged instead of actual timing of a bad battery defaulting so I'm assuming a competiter vendor out to degrade company. But for me most reviews all good and I like how light and compactable the battery is for this 48v 12ah. I charged it once arrived , only took 4 hrs of initial re charging. This buy from this vendor is my try out buy of myself buying another one if my first buy satisfactory to trust to buy more. I get back in a few weeks to update how the battery is doing for my 500watt gear motor. For now it's all good, re charge to automatic shut off, hook tx60 connectors on to bike as power turns on as full. Easy to place battery on bike of convienant location across my top bar of frame.

I'm approaching 30 days, previously pondering a possible attempted return because battery quality can be risky, but I am keeping it because SO FAR SO GOOD! I haven't tested how long the battery will last, and only used it for a few hours and then charged it twice with no problems, and the charger shuts itself off (I unplug it anyways).-It doesn't sink with my bike's battery display (many probably don't), so my battery light flashes, and I am only guessing how much power is left. That is ok with me, because this is an occasional ebike around the neighborhood.

There seem to be an arc when plugging in the charging cord but I was listening to someone on YouTube saying you need to power up the charger before you plug battery in because there are no diode’s or reverse current flow?. Plus pay extreme attention on lining charging plug up precisely

works good!

the length of the 52V 20Ah pack is 10.6in or 268mm, not the 10in shown in the picture. It will not fit where I need it to.

Worked fine on an otherwise stock razor mx650 with original brushed motor, but once I replaced the stock motor controller the shortcomings became apparent. One strip of 6 cells has all its current going through a single nickel strip, of which these strips are usually rated for a 7A max current over it. This strip that takes up the load is bent over one side of the battery, creating a weak point of higher resistance. Needless to say, upon upgrading the motor controller, the strip burnt through right where it was bent over ... before the BMS wanted to limit the battery, or fuses blew. This little strip of nickel basically functioned as a very smelly fuse. Luckily I was watching it and no fire resulted, just some burned plastic and tape... my cells are all still good and I can fix it, but this is some poor battery design work. Suggest another brand if you can manage it. The BMS seems decent enough, rated 30A continuous, probably 60 amp max draw. Fairly certain the 650 stock motor wasn't trying to draw more than 60A from the battery at the time it melted. If it was, then the 650w rated motor from the razor was trying to draw 3000w or more from the battery... unlikely. If my calculations are correct, 60A/13 should be max 4.6A running through that particular strip. Maybe the BMS failed to limit at 60A or, in my non expert opinion, the bend in the strip just affects the resistance that much that it burned up with that amount of current going through it ...hard to tell. There was also one cell in the middle of the pack that was different than all the rest suggesting this was probably a "remanufactured" battery. So I'm going to fix this, probably get a better BMS installed and get a current meter on the battery and see what the motor and controller are actually trying to draw, and will update if I find out more.