Features: Can be used for multimeter, converted to lithium battery charging For example: VIN+Port input 5V solar panels, BAT+port can output 4.2V to charger 3.7V 18650 battery Note: The OUT+Port can output an adjustable voltage.
Specifications: Input voltage: 4.5-8V DC Output voltage: 4.3-27V DC (Continuously adjustable) Charging voltage: 4.2V DC Charging current: Max. 1A Discharging current: Max. 2A Size: 3.3x2.3cm/1.3x0.91"