Basic InfoType:Lithium-Ion BatteriesUsage:Car, Bus, UPS, Electric Power, Electric Bicycle, Nominal Voltage:48VDischarge Rate:High Discharge RateShape:Square BatteryRechargeable:ChargeableBattery Model No.BN4812DVMaterialMnNiCo Composite Material + LiMn2O4Nominal Voltage (V)48VNominal Capacity (C2, 25℃ )12AhBattery Pack Dimension (mm)199mm X 149mm X 96mm (L X W X H)Nominal Weight (Kg)3.9Kgs ± 0.1Charge Limited Voltage (V)58.8VContinuous Charge Current (A)2AMaximum Charge Current (A)5ACharge Mode (Constant Current/ConstantVoltage)2A X 6.5hDischarge Cut-off Voltage (V)≥ 39VContinuous Discharge Current (A)≤ 10AMaximum Continuous Discharge Current (A)≤ 15ACycle Life at 100% D.O.D.≥ 800 CyclesCharging Port / Discharging PortBanana Plug / Banana PlugCapacity Retention Rate at 0℃≥ 90%Self-Discharge Rate (25℃)≤ 3% per monthTemperature CharacteristicCharging：0℃ - 40℃Discharging：-20℃ - 40℃Storage：-20℃ - 40℃FEATURES:1.Modularized design and pefectly compatible to the electric bicycles which are using traditional VRLA batteries2.'Green " and environment-friendly, no pollution to the environment during production and normal usage3.Stable structure and simplified production process enables mass production and easy maintenance4.Completely new protection design of water-proof, fire-proof, shock-resistance enable high safety5.Professional protection module and BMS ensures the battery pack to be protected perfectly6.High weight and measurement specific energy ensures the battery pack extremely long-voyage ability7.Super long life supported by innovative technologies, high quality material and strict manufacturing controlWarning:In order to prevent any possible battery leaking, heating, please benoticed for below preventative measures:  1.When the battery pack's terminal voltage is higher than 36V (safety voltage forhuman body), any body contact to the battery terminals is prohibited.
 2.The battery pack must be fully charged before discharge at the first time of use 3.For those battery packs which require long period storage (3 months above), they must be stored at dry, clean and well-ventilated place. The battery pack must be re-charged and discharged in every 3 months, and storage temperature shall be between -10℃～45℃ 4.Leaving the battery pack at heat source is prohibited
5.Slapping, throwing or treading on the battery pack is prohibited
6.Short-circuiting the battery positive and negative is prohibited.
7.Disassembly or refit of battery pack without premission of Chilwee engineers is prohibited
8.Immersing the battery pack into water is prohibited. Battery pack must be stored at dry and clean environment while it is not in use.
9.The user must use quality charger to charge the battery, or as per Chilwee's recommendationCHAOWEI POWER CO., LTD.No. 12 Zhizhou Ave., Zhicheng New Industrial Park, Changxing County, Zhejiang Province, China. 313100Tel: +86 572 6200283 Fax: +86 572 6054410Web: Email: info@chaowei.bizFEATURESFEATURESProduct Description