JP> TW> Yuo could get away with it as long as the CEll Temperature is checked
JP> TW> for overheating AND it is on a Timer as NiMH batteries are less
JP> TW> tolerant of Overcharging then NiCad's

JP>        Tom, the intended NiMh cells will go into a handheld marine radio,
JP>  made by Icom. The charge bloc has no "intelligence" but
the radio has.
JP>  It cuts off the charger when enough has been done. Later this summer, I
JP>  will know if the move to NiMh is good.

Sounds you nmight want to pose that question of Battery substitution to
ICOM in an "E" mail.

BUT it sounds like the Radio has a smart charge control chip inside. And
some say Charging NiMH batteries in a "Smart" NiCad charger works
fairly well it would be worth a try.
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 þ SLMR 2.1a þ This note from El Cajon California USA