Ps-18650 Lite is a UPS power supply designed for raspberry pie (hereinafter referred to as PI), which supports the following board models: for Raspberry pie 4B 3B + 3BFor Ups-18650-lite and raspberry pie motherboard are connected through an elastic thimble. The thimble is used for power supply and communication, with simple installation and stable connection.Ups-18650-lite uses two flat 18650 batteries of standard length for power supply. It supports external power insertion detection and charging while discharging. When the external power supply is disconnected, it will be seamlessly switched to battery power supply. The switching process has no impact on the work of for raspberry pie.In addition, the ups board also integrates a professional electricity meter chip max17040g, which can be used to measure the battery voltage and remaining electricity.On board protection circuit, anti charge, anti discharge, anti current, anti short circuit and anti reverse connection, balanced charging, stable and safer operationSize: 85 x 55 x 25MMColour: blackMaterial: PCBPackage Contents:1 x Expansion BoardOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.