What type of charger is required to charge OneChildOneLight

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.