Kenwood TK-3230 Instruction Manual page 53

key while turning the transceiver power ON (for 1 second).
 Press the
 Press the MENU key then press
(battery level indicator on) or "
off).
 Press the MENU key to exit the selection.
 Press the PTT, MON, or CAL key to exit Setting Mode.

or key to select " ".
or to select "
" (battery level indicator
"