Mikroe Charger 13 Click is a single lithium-ion (Li+) cell charger for Low-Cost Li-Ion battery chargers. The Mikroe Charger 13 click features the RT9532GQW battery charger IC, with extra features for hassle-free charging. This IC has an internal switching-mode regulation with input current limiting. This allows it to use an external power supply from a cheap wall adapter, rated up to 28V.