Features: *High-accuracy voltage detection circuit; *Terminal of the charger using high voltage device; *Built-in three-stage over-current detection circuit (over-current 1, over-current 2, load short circuit); *MOS transistor can control the battery charge and discharge; The main function: *Overcharge protection, overdischarge protection, short circuit protection, overcurrent protection. *B+ is connected to the positive pole of the battery. *B- connect to the negative pole of the battery. *P+ is the output and input positive pole of the battery pack. *P- is the output and input negative pole of the battery pack. Specification: Product name: Battery Protection Board Color: Green Overcharge detection voltage: 4.250.05V Overcharge release voltage: 4.230.05V Overdischarge detection voltage: 2.450.1V Charging voltage: 4.2V Maximum continuous charge/discharge current: 13A Maximum discharge current: 5A/10A/15A Product size: 38*7*2mm Weight: 10g Optional: 3MOS, 4MOS, 6MOS Suitable for: Lithium ion li battery Quantity: 1Pc Package Included: 1 Battery Protection Board Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data.