Shift AV Switcher to the correct position according to the power.
Insert AAA or AA or 9V NI-MH or NI-CD rechargeable batteries into the charger ensuring proper alignment of the "+" AND "-" terminals. The batteries should be inserted into the correct compartment according to their size.
The led indicator will light up to signal that the charging process has begun. The led indicator will not change color or turn off when batteries are fully charged.