Features: 1.High-precision voltage detection function for each battery; 2.3 overcurrent detection function; 3.Through the MOS tube can control the battery charge and discharge; 4.Wide operating temperature range: -40 C ~ +85 C; 5.Low current consumption Specifications: 1. Charging voltage:DC 9V CC / CV (MAX:12V) 2. Current Single current consumption (consumption) 6uA Maximum sustained discharge current:4A 3. Overcharge protection Overcharge detection voltage:4.29V Accuracy 0.025V Overcharge detection delay time:1s Overcharge recovery voltage:4.05V Accuracy 0.025V 4. Over-discharge protection Over-discharge detection voltage:3V Accuracy 0.1V Over-discharge detection delay time:128ms Over discharge recovery voltage:3.2V Accuracy 0.1V 5. Over-current protection Overcurrent detection voltage:200mV Overcurrent detection current:9.8A Overcurrent delay time:12ms Recovery Status: Auto Recovery 6. Short-circuit protection Detection status:external short circuit Detection delay time: 50us Recovery Status:Auto Recovery 7. Internal resistance:protection circuit:(MOSPET) 21m 8. Temperature Operating temperature range:-40 ~ +80 Storage temperature range:-40 ~ +125 Product size: about 3.50*1.70cm/1.38"*0.67" No Retail Packages Quantity: 1Pc Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package include: 1 x module