Power management module suitable for 6V~24V solar panels, supports charging of 3.7V rechargeable and dischargeable batteries through solar panels or Type-C interface, supports 5V/3A regulated output (also supports PD/QC/FCP/PE/SFCP and other protocol outputs), with MPPT power point tracking function and multiple protection circuits, it works efficiently, stably and safely, and can be used for solar power generation, low-power Internet of Things and other green and environmental projects. Supports MPPT power point tracking function, which can greatly improve solar energy conversion efficiency Supports multiple charging methods such as solar panels, Type-C power adapter, etc. Suitable for 6V~24V solar panels, adaptive input voltage, connected through DC-002 power socket or terminal block, with input anti-reverse connection Onboard multiple status indicators for easy viewing of solar panel and battery status Onboard anti-overcharge, anti-over-discharge, anti-overtemperature, anti-overcurrent and other protection circuits, working stably and safely The appearance, color, and printing of the product from batch to batch, but this does not affect use. Without 18650 battery Colour: Blue Material: PCB Package Contents: 2 x Module 2 x Battery Case Only the above package content, other products are not included. Note: Light reflection 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.