7.2 V / 7.4 V / 8.4 V 18650 lithium battery 2200 mA Rechargeable battery pack megaphone speaker protection board

SPECIFICATIONSBrand Name: VariCoreOrigin: Mainland ChinaModel Number: 8.4V 2.2ASize: 19*37*68mmApplication: Electronic equipmentWeight: 100gNominal Capacity: 2200mAhType: Li-IonVoltage: 7.4V-8.4V Rated voltage: 7.4 V Nominal capacity: 2200 mah sustained current discharge current: constant current discharge maximum of 0.2 ° C: 1 ° C working temperature: load: 0 ~ 45 discharge: -20 ~ 60 Product Size: 68 * 37 * 20 MM weight: 100g Applicable scope: all kinds of dynamic model, power tools, electric toys and so on ... advantage of using lithium electricity: 1. Small volume, light weight, large capacity, environmental protection, no memory effect. 2. It is the power supply for portable electronic devices, but the most delicate, lithium-ion batteries in use, note the following points. use of common-sense lithium electricity: 1. You should use a 4.2 V Li-ion battery charging standard charger. 2. The prohibition of large discharge current. 3. It is prohibited discharge, single voltage battery s