7.4V LI-Polymer battery Pack

ItemCriterion1.Battery pack specification1.1Assembled type2 series and 2 paralle1.2Nominal capacity4400mAH1.3Nominal voltage7.4V1.4Standard Charge methodconstant current then constant voltage(CC/CV)1.5Charge voltage(MAX)8.4V1.6Charge current2A-recommended, 3A-Max.1.7Charge time3Hrs-recommended,2Hrs-Min.1.8Output voltage 17.4V-nominal, 8.4V-peak, 4.6V-cut off1.9Output voltage 27.0-8.0V-shipment1.10Discharge current1A-nominal, 4A-Max.1.11Charge temperature0- +45°C1.12Discharge temperature-10- +60°C1.13Storage temperature-10- +45°C2.Battery cell specification2.1Brand/ModelSANYO,Made in japan./Li-ion 186502.2Nominal capacity/voltage4400mAH/8.4V2.3Size18*653.Protection circuit module(PCM) specification3.1IC Brand and ModelRICOH / R54603.2Over charge detection voltage4.25V-Cell, 8.5V-Pack3.3Over discharge detection voltage2.4V-Cell, 4.8V-Pack3.4Over current protection2-5A-adjustable3.5Short protectionYES,Cut short circuit or charging to release3.6PPTC/NTC ModelNT4.Configuration4.1ConnectionWire4.2Wire model and lengthUL1007-22,100mm(not including connector)4.3Connector modelNT4.4polarity, + red, - black4.5CasePVC shrink tube/blue4.6Lable4.7Outline size(not including wire)18*65 mm4.8WeightAdout 45g5.Caution5.11.Never disassemble the cells.5.22.Prohibition of dumping of cells into fire or liquid such as water.5.33.Don’t Fall, hit, bend battery body