Most super capacitors (supercaps) can be discharged down to 0 V and recharged to their maximum voltage with the manufacturer recommended charge current. A simple voltage regulating LED driver with constant current, usually regulated by sensing a low side, series current sense resistor, then a voltage clamp can be used to charge a super capacitor. However, using a dedicated charging IC that provides both output voltage and current regulation, as well as input power regulation, temperature sensing, thermal regulation and other safety features allows for more precise and safer charging. Also, there is no series sense resistor creating an undesirable voltage drop, especially during discharge. This application note provides a design for charging supercaps using either dedicated supercap chargers or simple modifications to Li-ion battery chargers.