H HAILONG 36V 48V 52V EBike Battery Lithium ion Battery with Waterproof Case for 250W-1500W Motor E-Bike Bicycles for Mountain Bike Motor Bike/Trike/Scooter Conversion Kit

Works great on my wife's KBO Hurricane. I rewired the bike to allow this battery to replace the original battery that died. Looks like a normal carry pack on the bike and provides about 50 miles of range on flat rides.

I bought two of these batteries and am happy to now have a total of 34 watt hours of power. It has greatly increased my range! I have ridden 52 very hilly miles on my heavy ebike, carrying my heavy body and the additional battery weight, with power to spare. The batteries have been reliable, charging in a reasonable time. Good value, great performance.

If you need a new battery for your Ebike, look no further. I bought one a little back, and sadly to no fault of the seller, one or more of the cells went dead and would only charge to 50.6v. after a short discussion and a pic of proof of voltage test, the seller sent a new one and a day later (today) I received it. I absolutely love the case, love the battery and love the seller. Fantastic, buy one!

This battery Works well with Bafang 48V 750W BBS02 Mid Drive motor.I mounted the battery vertically on the seat post because it allows me to use the battery case to hide some of the extra cables and was the best orientation for me for cable management purposes.I use with pedal assist only (no throttle). My eBike weighs 38 lbs and I weigh 175 lbs (total 213 lbs or ~97 kg) and is configured with a 52T front chainring. I spend most of my time riding on the 13T cog on the rear cassette.Riding on pedal assist 3 to pedal assist 5 (highest) I average about 26 mph and this battery is good for about 15 miles. It easily gets me up a 1.5 mile, 7% climb in about 5 - 6 minutes (17 mph).My commute is 10 miles each way and relatively flat and I have to pedal intermittently without the motor to recharge the battery for the last 5 miles of my ride.If you are using with a motor that has less draw (250W - 500W) and your bike + rider weight is between 200 - 250 lbs you should easily be able to get 25 to 30 miles with pedal assist. I wouldn't expect more than 15 to 20 miles on throttle only. That being said I haven't tested it in these conditions so they are only my best guess based on my experience.

The small 48v 10Ah battery is performing about what was expected.I have now used the battery for 2,000 miles with a Bafang BBS02B 750wAfter a 25+ mile ride in through hilly terrain, averaging about 15mph (used for pedal assist), the battery indicator shows 53% is left. When the battery indicator gets to 20% or lower, if the power demand of the motor get above about 250w, the battery will struggle to provide the needed power, so it’s best to dial down the assist control when the battery level down.The small charger works well and is easy to pack to take with you to use to “top off” the battery.The only thing I wish it had was a shut off. There is a very small 'spark' when plugging the battery into the motor and or charger.However, if you plug the charger into the AC outlet before plugging the charger into the battery, there is no ‘spark’.I now have 3 of these batteries that I use in rotation. For most rides and errands, one battery is ample. The small size great. No need to ride around with a big heavy battery on the bicycle if it is not needed. When more distance is needed, I just put another battery (or two) in my panniers. I use all 3 batteries, when bicycle touring and that gets me 75 miles… enough for me in a day.

Not sure what is going on. Unit says it’s charged but when running it the battery shuts off and provides no power. By the time I realized this I could not return the unit because it took me too long to get to my project. What a waste. As others have said, maybe the charger is malfunctioning and the battery is dead and that’s why my razor shut down. Or it could be a bad BMS that can’t handle the 250w motor. For the record, the amp draw is less than 9 Amps. Well below the BMS limit

Works good for my e bike

Worked great.