3.7V Battery Charger Board DC-DC Step Up (2 in 1) Lithium-ion 18650

Lithium-ion 18650 3.7V Battery Charger Board DC-DC Step Up Boost Module TP4056 DIY Kit Parts Features: 100% Brand New and High Quality 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" Quantity: 1 Pcs