We will do our best to resolve your issue till your satisfaction. All emails will be answered within 24 hours except weekends and holidays. Welcome to UPP official store? Why choose Unit Pack Power battery? 10 years battery packing experience, from 24V, 36V 48V 52V 60V 72V to DIY Voltage/Size, all we can make it for you, Mature production technology, and filter the high consistency cells, we know how to make a reliable and safe battery for customers. There are Grade A B C level battery, Unit Pack Power only use grade A cell for battery, safest packing process, never use cheap / false cells with false capacity / low price to attract buyers. Price = quality = customer’s service, you want to get a long range / long life / safe battery for your bike, or want to get a unknown cells battery back your home? Ebike battery charging cycle exceeds 1000 times. High-quality electric cells and a built-in BMS protection board prevent over-charge, over-discharge, over-current and short-circuit, ensuring long service life. Our battery fits most motor kits, for example: Bafang, Voilamart, CSC, Tongsheng, Ebikling, but exclude these four: Bosch, SHIMANO, Yamaha, Panasonic. Unit Pack Power assemble ALL our batteries in our factory, Professional imported machine spot welding, neat electric welding, cleverly designed the routing direction. Multifunctional e-bike battery for pannier rack. Built-in genuine class A lithium cell. On/off button allows you to save more power. With rear light, you can ride your bike more safely. Illuminated battery LED power indicator, informs you to charge your battery in time. Each pack has undergone a full charge and discharge test to ensure you get every amp hour you paid for. With a powerful battery management system Our BMS can protect the battery to avoid problems such as. Balance function? Overcharge protection? Overcurrent protection? Short circuit protection? Overvoltage protection? Temperature protection? Over-discharge protection? Reverse charge protection. With our powerful BMS, you can use this rack e-bike battery with more safety. Let you have more pleasure while riding. ALWAYS use class A+ cells. Unit Pack Power never uses counterfeit cells. We insist on using class A+ battery cells all the time. That’s why our battery is more expensive than others. The battery looks the same on the outside, but different on the inside. There are many sellers who use inferior cells. When you receive them, they behave like a normal battery at first. But when you use it for a few months, you will realize that the battery no longer works. 18650 2500 mAh class A+ cells. On / Off switch. 1x battery 1× Rear Rack 1x power cable 1x instruction manual. The battery must be FULLY charged before first use. The battery is stored in a cool and dry place. Do not Separation, extrusion, and impact. Do not put battery into water and fire. Keep away from children. It is our goal to provide our customer 100% satisfaction. Dear buyers, we appreciate your business, if you are satisfied with our service, please leave us a. Our working time is.