Huizhou Wanhong Energy Technology Co., Ltd.  

Product Name: 36V 7.5ah 250W Electric Bicycle Battery/Electric Bicycle Rechargeable Li-ion Lithium Battery for Electric Bike and Hidden Battery E-Bicycle Model NO.: 36V 7.5Ah E-Bike battery Electrolyte: Li-ion Usage: Electronice Bike Standard Voltage: 36V Rated Capacity: 7.5ah Accessories Type: Battery Size: Large Discharge Rate: High Discharge Rate Rechargeable: Chargeable Connection Mode: Series and Parallel Type: Lithium-Ion Battery Pack Trademark: wanhong Transport Package: Normal Specification: customizable Origin: Shenzhen Product Description Item specifics:NO.ItemSpecifications4.1Nominal capacity 7.5 Ah 0.2C Discharge4.2Initial Impedance ≤1Ω 4.3Weight Approx:2.0 kg4.4Nominal voltage Fully charge voltage(FC) Fully discharge voltage(FD)36 V42 V Defined in this DOC: FC = 42V27.5 V Defined in this DOC: FD =27.5 V4.5Standard charge current 0.2C4.6Shipment voltage 36V~42V4.7Standard charging method0.2C CC(constant current)charge to FC, then CV(constant voltage FC)charge till charge current decline to ≤0.01C4.8Charging time Standard ChargingApprox3 hours 4.9Standard Discharge CurrentConstantcurrent 0.2 C end voltage FD4.10Max. charge current 0ºC~15ºC3C15ºC~25ºC3C25ºC~45ºC3C4.11Max. discharge current -10ºC~15ºC0.5C15ºC~60ºC0.5C4.12Charge cut-off voltage Ref. 8.1 VDET1 4.13Discharge cut-off Voltage Ref. 8.1 VDET2 4.14Storage temperature -20ºC~60ºC≤1 month-20ºC~45ºC≤3 month-20ºC~28ºC≤1 year4.15Recoverable capacity Constant current 0.5Ccharge to FC, then constant voltage FCcharge to current declines to 0.01C, rest for 10min,constant current 0.5Cdischarge to FD,rest for 10min.Repeat above steps 3 times, recording the maximum capacity4.16Storage Humidity ≤75% RH4.17Appearance Without distortion and leakage4.18Standard testing conditionTemperature : 23±5ºCHumidity : ≤75%RHAtmospheric Pressure : 86-106 KpaFAQ1. Why chooseWanhong?Wanhong is one of the best battery manufacturers in Shenzhen,China. Wanhong has developed several lines of standard battery packs and systems to fit a variety of customer requirements, from lithium batteries to grid-connected systems. If one of the standard batteries below does not satisfy your needs, Wanhongalso designs and produces custom batteries or multi-cell building block that could be the right solution.Wanhong's high quality management material is integrated into every type of battery, improving cycle life, performance, and safety.2. What is our main products?Professional Production All Battery System,3.2V ~ 330V , 5AH ~ 500AH Battery Pack,Li-polymer battery.LiFePo4, Lithium ion,Solar energybattery.Electric bicycle battery,Welcome your order to test our quality and service.3. What's the warranty of battery?1-2 year under normally use.4. What about the lead time?Sample : within 5-7working days. Bulk order: within3-4weeks.5. Do you have any MOQ limit?No have MOQ, samples are welcome for your testing, sample fees could be retunred on bulk order.6. What kind of certification could you provide?CE, RoHS, UN38.3. UL. We also could apply other certication that you need.7. Can you accept OEM& ODM?Sure, we are a manufacturer and has profressional R&D Department, welcome your OEM &ODM order.8. What is the shipping way?base on your requirement of Order Quantity, Lead Time & Freight fee, we often chose from Air, Sea & Express.