Solar Light Control Module Control Circuit Board with Switch for 3.7V Lithium Battery Feature: 1. Solar lawn lamp control panel, dedicated to 3.7V2 lithium battery. With over-charge and over-discharge protection and three-level switch (light off, full power, low power)3. Charging during the day can be illuminated at night, automatic circulation without human intervention4. Fine workmanship and clear connection which can ensure stable performance5. High quality product can ensure the durability and stability of the control panel Specification: Item type: solar light controller module Operating voltage: 3.7V lithium battery Charging current: 1A Overcharge protection: 4.25V Over-discharge protection: 2.8V Light board: lamp beads 3.0-3.2V in parallel Output power: 1W Solar panel: 6V Level: 3 levels (light off, full power, low power) Working state: The solar panel charges the battery when the light is on during the day. The LED light panel is not working. When there is no sunlight in the evening, the LED light will turn on automatically, that is, the battery will automatically charge during the day and night. Size: approx. 36 x 23mm / 1.4 x 0.9in Hole distance: approx. 25mm / 1in Package list: 1 x module 1 x manual handling