Battery Name: 7.4V 4500mAh Li-ion polymer battery pack Battery Model: 2S of FLP-5567100 Battery Keywords:7.4V 4500mAh Li-ion polymer battery pack,Lithium ion polymer battery,Li-PO battery,Li-polymer battery,lithium polymer battery,LIPO battery,Polymer lithium ion battery,li-poly battery Battery Applications: Industrial portable device,medical device,etc. Battery Features: 1. UN38.3,RoHS,CE certificated Li-polymer battery pack; 2. It could be customed by the clients' request,Li-ion Polymer Battery pack OEM orders are welcomed; 3. The anode materials is LiCoO2(Advantage: work voltage 4.2V-3.7V,charge/discharge voltage is stable,energy density is higher,cycle life is exceleent),the battery life cycles is over than 500 times and the capacity remains over 80% after 300 cycles; 5. Build in two-way protection IC circuit board, a single cell over charge protection voltage 4.20V±0.05V, over discharge protection voltage 2.7V±0.1V; 6. No memory effect, High voltage, high energy density, long cycle life; 7. Eco-friendly. Battery Specifications: 7.4V 4500mAh Li-ion polymer battery pack(2S of FLP-5567100) Cell 3.7V 4500mAh FLP-5567100 Battery pack method 2S of FLP-5567100 Norminal voltage 7.4V Nominal capacity 4500mAh Charge method CC/CV Standard charge Constant charge current: 0.2C(900mA) Constant charge voltage: 4.2V/Cell Charge cut off current: 100mA Over charge Detecrtion voltage: 4.250±0.050V Release voltage: 4.150±0.050V Detection delay time: 1.0：±0.5S Over discharge Detection voltage: 2.75±0.08V Release voltage: 3.00±0.10V Detetion delay time: 100±50mS Over discharge current Over current: 6-8A Delay time: 10.0±5.0mS Max. continuous discharge current 4500mA Discharge cut off voltage 2.75V/cell Operating temperature Charge: 0 ~ 45ºC Discharge: -20 ~ 60ºC Storge ambient temperature (charge 40-60%) -20~60ºC less than 30 days -20~45ºC less than 90 days; 20~20ºC less than 360 days Battery dimensions（Dia*H） 12mm * 68.2mm*103.5mm Weight Approx. 170.0g