Use the market mainstream TYPE-C interface Debugging before use Default output 9V or so Input voltage:4.5-8V Continuously adjustable output voltage: 4.3-27V (Above 4.3V, below 27V, any voltage can be output, you can adjust it by yourself, you can adjust the voltage counterclockwise) Charging voltage:4.2V Charging current: Maximum 1A Discharge current: Max. 2A --Output current should be calculated by yourself. Output reference maximum current: 5V 1.4A, 9V 0.8A, 12V 0.6A Static current about 0.5mA Overcharge protection: Yes Over-discharge protection: no (can also be said to have, 2V cut-off boost, but do not block the output output is still 2V) Cut-off boost 2V, depending on whether to add another protection board Dimensions 3.3X2.3X0.9 For example, if the VIN+ terminal is connected to a 5V solar panel. BAT+ terminal can output 4.2V to charge a 3.7V 18650 battery. OUT+ terminal can output an adjustable voltage, you can adjust it by yourself. Can be used for multimeter, modification of lithium battery charging Translated with DeepL.com (free version)