The Hobby Components micro charger is a tiny single cell (3.7V) lithium battery charger module which not only incorporates both battery charging protection and control, but also includes battery voltage & current over discharge protection and battery overload protection. Measuring only 27 x 14mm this tiny module can easily be incorporated into low power lithium battery applications.

The charger will accept power from either a 5V microUSB adapter or via a 4.5 to 6V power supply and will charge a connected single cell lithium battery at a rate of ~0.5A.

The battery can be connected via a JST XH-2.54 connector or by 2 large solder pads (BIN + & BIN -).

The module's output supplies the batteries nominal output of 3.7V (4.2V whilst charging) at a constant current of up to 2A (depending on battery and charger specification). An external device can be connected to this output via a 0.1” pitch pin header or via 2 large solder terminals (BOUT + & GND).

Supported battery type:						Single cell Lithium-ion battery
Module supply voltage:						5V via microUSB or 4.5 to 6V via power in header
Battery charge voltage max (float):				4.2V
Battery stand-by exit voltage:					4.05V
Battery charge current (max):					445mA +/- 10%
Battery charge termination current:				44.5mA +/- 10%
Battery over discharge voltage protection:			2.4V
Battery over discharge current protection:			3.5A +/- 0.9A
BAT out terminal voltage max (charging):			4.3V
BAT out terminal voltage min (discharging):		2.9V
BAT out terminal maximum continuous current:		2A
Module dimensions:							27 x 14 x 7.5mm

Battery In And Power Out Connection:





External Power Options:

PDF available for download on our support forum here.