“Li-Ion battery charger, based on BQ24060 IC, this simple PCB takes 5V as input and charges a 3.7V Li-Ion battery.
The charger has output short circuit protection and optional thermal protection.
It can charge a battery with current up to 1A (the charging current is set by a resistor), the PCB works without a problem at charging current up to ~0.7A, at higher current without heatsink or cooling the IC heats up and enters thermal protection, cycling the charging on and off.”