Velleman WPM321 1 A Lithium Battery Charging Board (2 pcs)

Features

The 1 A LITHIUM BATTERY CHARGING BOARD (2 pcs) is a complete constant-current/constant-voltage linear charger for single cell lithium-ion batteries.

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: -10°C to +80°C

weight: 10 g

dimensions : 25 x 19 x 10 mm