RANSYRI 36V 20Ah Universal Power Pack - High Capacity Lithium Battery with Smart Power Module (DC200-1000W)

I’m really impressed with this 36V 8Ah battery! It holds a charge much longer than I expected, giving me reliable power for hours of use. Charging is quick and hassle-free, and it feels solid and well-built. Since I started using it, my device runs smoothly and consistently without any drops in performance. I also appreciate how lightweight and easy it is to handle. Overall, this battery has exceeded my expectations and is a great value—I’d definitely recommend it to anyone looking for dependable power!

Used for a custom crazy cart works very good!

UPDATED REVIEW!!! After contacting the seller they are choosing to rectify the situation by sending a new battery. So far I would say excellent customer service! I will have a final update after charging and using the new battery to see if it is up to par. Battery amp hr rating not accurate. Under performs for a battery this size. It discharges at a faster rate than a 12 amp hr battery from same manufacturer under identical conditions. I ran this test multiple times and always the same. The stated amp hour for this battery is incorrect or the battery is faulty. I will update this review after seller responds and addresses the battery performance issues.

Bought the battery as a replacement for dead Jetson Bolt Pro battery. Installation was relatively easy, but requires one modification - adapter provided for the main connection, but if you want to use the charging port already in place (instead of cutting a new hole, perhaps), then you need to make a connection between the old charging line and the new port - basically, I took the old battery connector and spliced it onto a plug to fit the new battery connector (adapter was not provided). Took only a few minutes extra, if you have experiencing splicing wires. Used piece of foam from shipping to help keep smaller battery fixed in place. TESTING: we conducted a very unscientific comparison against my second Jetson Bolt Pro bike - side by side, same configuration, but 2nd e-bike has original battery (3years old). Speed was comparable - e-bike with this new battery was actually a little slower than e-bike with old battery, but only by a small margin - could have been normal variance. Range was comparable - 8ah battery was at 3/4 after 7mile ride, other e-bike was basically the same. Will do a longer ride soon to see how it fully compares. CONCLUSION: Good replacement, much lower cost than oem would be. Long-term still yet to be determined.

No bad but not powerful buying another one so I can wire then in parallel

High quality, highly recommend,I used it to update my son Razor from 24 V to 36V 😍.My son got so happy with the amazing results. Delivery on time and not damaged Battery get full charge fast and longer live Thank you very much for your business.

Seems a little underpowered for what the rating says it is, and when it arrived casing appeared to be either but looked like melted or somehow ripped

Perfect fit