Features 1.This charge control module can automatically control battery charging and discharging to protect batter. 2.LED power supply with power display is more practical. 3.Wide range of applications, suitable for 3.7V-120V all lithium battery. 4.Automatically cut off power to save power and extend service life of battery. 5.The board has a bright 3-digit display with 0.1 accuracy shows the setting value. Specification Condition: 100% Brand New Item Type: Protection Board Material: Printed Circuit Board Color: As Pictures Shown Input Voltage: 220 V AC Display Accuracy: 0.1 v Control Accuracy: 0.1 v Output Type: Output Switch Voltage Error: + 0.1 v / -0.1 v Scope: 3.7V - 120V all lithium battery Package List 1 x Protection Board