Support 18650 batteries and soft pack batteries. Maximum charging current: 1000mA Charging cut-off voltage: 4.2V Battery over-discharge protection voltage: 2.4V Maximum output current: 2A (recommended to use within 1A) Output voltage: 4-12V (adjustable) Colour:Blue & Black Material:PCB+Plastic Note: When the battery is connected for the first time, there may be no voltage output, and the protection circuit needs to be activated at the power input. When using a mobile phone charger for power supply, it must be to output more than 1A, otherwise it may not charge normally. Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * 18650 Lithium battery discharge module 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.