If the charging is done using grid power from the mains, the study lights can be charged using any Mobile Charger with output 5.0V/350mA D.C or alternative good quality Ni-Mh Charger with output Voltage 5.0V, 275-350mA. For charging though Solar, 6V D.C, 1Wp Mono / Polycrystalline type panels can be used.
The lights can be charged through the supplied 1.0 Watt solar panel. The Study Lights can also be charged from the mains using any of the popular mobile chargers (thick or thin-pin type). Ideally the time required to charge through the mains is 2-1/2 hours whereas it takes about 6 - 8 hours on a sunny day to fully charge the light using the solar charger. Solar bulk chargers are available for schools, where at a time 20 to 50 students can charge their lights.