Charge a LiPoly/LiIon battery over USB Mini B port with either a computer or a 5V wall power adapter. This charger charges a battery in 3 stages. Preconditioning charge, then constant current fast charge and constant voltage trickle charge. The fast-charge current is 500mA by default, but is easily adjustable from 100mA up to 1000mA by soldering a through-hole resistor on-board.
This board is great for DIY projects because it has 3 indicator LEDs - one for power, one for charging status and a third that indicates when charging is complete. Keep the battery connected to the charger and pass power through the additional JST connector using the included cable! You can also charge the battery while the load is connected so that you don't need to disconnect the battery from the device for charging.
Only for charging single Lithium Ion/Lithium Polymer 3.7/4.2v batteries (not for older 3.6/4.1v cells).
For use with Adafruit Lipoly batteries only! Other batteries may have different voltage, chemistry, polarity or pinout.