If you are checking China bluetooth speaker battery manufacturer and supplier, or bluetooth speaker battery chinese factory, please feel free to contact M-Batt Electronics, we are always at your service.Battery Requirements:The working current of Bluetooth Speaker is very low, but continuous woking time should be longer than 8 hours.In addition, the battery should have high temperature protection function. The maximum continuous working current reach to 2.2A. Rated capacity is 2200mAh.Model No.: DF-18650-3S1P/2.2Ah/11.1VTechnical parametersOver charge protection：4.35±0.25VOver charge release：4.15±0.50VOver discharge voltage：2.40±0.08VOver discharge release：3.00±0.10VOver current protection（10ms）：10~17AHigh temperature protection（Protection can be release）：70±5℃Battery pack support Short circuit protection & Reverse charge protectionBattery cycle life：300~500 cycles1）PCM：This battery pack applied special designed protection circuit：Over charge, Over discharge, Short circuit and over current protection.Prevent battery from fire and explosion.2）Protection IC：The protection IC with real time detection function: over charge ,such as over discharge ,over current and short circuit protection. It ensured battery security and stability.3) NTC It will detect the temperature of battery, and active the protection system.Cell type :18650/2200mAh/3.7V Li-ion cell(Samsung)MOSFET： Intelligent power switch,which keep the battery voltage in a stable range Picture of Cell and PCB
