1 Amp Lithium Battery Charging Board (2 pack)The TP4056 based VMA321 module is a complete constant-current/constant-voltage linear charger for single cell lithium-ion batteries. Charging output via through hole pads on PCB.Specifications Input voltage: 4.5 to 5.5 VDC (by on-board USB connector) Charging current: 1 A adjustable Charge accuracy: 1.5 % Full Charge Voltage: 4.2 V Charge indicator: green = fully charged, red = charging Working temperature: 14 F to 176F (-10C to 80C) Weight: 0.35 oz. (10 g) Dimensions : 0.98" x 0.75" x 0.39" (25 x 19 x 10 mm) Sold as a pack of two charging boards
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