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. Built-in genuine A+ grade lithinum cell. Help you save more power. Avoid your battery be stolen. Inform you charge your battery on time. Each pack have ran through a full charge and discharge test in produce, to make sure you are getting every amp hour you paid for. With Strong Battery Manage System. Our BMS can protect battery prevent may problem, such as. With our strong, you can use this triangle ebike battery more safety. Let you have a more pleasure experience while you are riding. Use A+ grade cells All THE TIME. Unit Pack Power never use fake cells. We insist on using A+ grade battery cells all the time. This is why our battery is expensive than others. Battery looks the same outside but different inside. When you receive them at first, they behave like a normal battery. But when you use it for a few months, you will find that the battery no longer works. Samsung 21700 50E 5000mah, 3C. 4.75kg(10.47lbs). 4.04kg(8.9lbs). Apply for: 48V 0-1500W Motor. Configuration: 13 Series 4 Paralles (52 cells). Battery Cell: LG 4800mah. Max Continuous Charge Current: 5A. Max Constant Discharge Current: 45A(BMS). Peak Discharge Current: 135A. Charge Cut-off Voltage: 54.6V. Discharge Cut-off Voltage: 36.4V39V. Battery Weight: 4.7kg. With Charger: 54.6V 2A. Apply for: 48V / 52V 0-1500W Motor. Configuration: 14 Series 4 Paralles (56 cells). Max Constant Discharge Current: 40A(BMS). Peak Discharge Current: 120A. Charge Cut-off Voltage: 58.8V. Discharge Cut-off Voltage: 39.2V42V. With Charger: 58.8V 2A. It is our goal to provide our customer 100% satisfaction.