Electric Bike Lithinum Battery for Bafang Voilamart AW Ancheer and Other Suitable for all brands of 48V 500W-2000W motors including Bafang motors , including electric bicycle motors, electric tricycle motors,it can be Installed somewhere can fix the position of the battery Made of A-grade 18650 battery cells (A-grade ), and have passed CE RoHS national safety certifications Equipped prevent overcharge, overdischarge, overcurrent, and short circuit to ensure long life. Every Lithium battery have pass the QC appearance and function test before shipment. The Ebike battery charge cycle exceeds 1000 times, life expectancy of up to 5 years. Please ignore the delivery Estimate date in system, we ship from EU, normally it takes 5-7 business days to delivered at you..syi