TP4056 + 3.7V 550mAh 612338 lithium polymer lipo rechargeable battery

Built-in protection circuit PCM for prevent over charging or over dischargingModel: 612338Capacity : 550MAHVoltage: 3.7VDimensions: Length 38MM 23MM width thickness 6.1MMTP4056 Description:Charge module - Linear chargingIt has MICRO USB femaleIt still retain the input voltage wiring solder joints, can be very convenient to DIYSpecifications:Current- 1A adjustable.Charge precision- 1.5%.Input voltage- 4.5V-5.5V.Full charge voltage- 4.2V.Led indicator- red is charging green is full charged.Input interface- micro USB.Work temperature- -10℃ to +85℃.Inverted polarity- NO.Size: 27mm X 17mm.1 x 18650 batteries (6000 mAh) you can charge with this charger in parallel at the same timeNOTE:Only one 18650 batteries (6000 mAh) you can charge with this charger in parallel at the same time1. Ampere meter can only be connected to 5v input end of the module.2. It is better that the charging current is 37% of the battery capacity. If you charge to the battery of 1000mAH, current of 400 is enough.3. The