1、Basic Specifications: This is a 4S 2V for LifePo4 protection board, which is practical 2、Protection Function: The protection board has overcharge protection, overdischarge protection, overcurrent, short circuit protection 3、Alloy+PCB: This is a protection board made of high quality alloy+PCB material, which is durable 4、Application: Very suitable for home DIY work and school science projects, widely used in battery protection work 5、Easy to Use: This is an easy to use protection board, which with a long service life 1 x Cable Protection Board1 x Yellow Pad  Item Type: 4S Protection BoardMaterial: Alloy+PCBCharging Voltage: 14.6VCharging Current: 50-150ASingle Cell Balance Current: 0.07ASingle Battery Consumption: 25uASingle Cell Balance Voltage: 3.6VInstantaneous Current: 300-900ARecovery Voltage: Single battery 3.0V (With Automatic)Overcharge Protection: Single 3.65VProtection Delay: 2 SecondsBalance Voltage: 3.5V Single CellBalance Current: 0.07ASwitch Control: Off State, Power off, Power on and RecoveryOvercharge Protection, Overdischarge Protection, Overcurrent ProtectionOver Discharge Protection: 2.5VOver Temperature Protection: 75℃ Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin