Robert Moore wrote:
That's why I have switched back to the RAYOVAC Rechargeable Alkaline
(used to be called "Renewable Alkaline")for my seldom used applications
such as my YAESU Aviator Pro II. Yes, they make an optional back that
will hold six of any AA cells. These cells have a shelf-life like any
other Alkaline, but provided that they are not discharged too far, I
have recharged some of them probably a hundred times. Kinda hard to find
but I tracked them down in Walgreen Drug Stores.

WARNING!!!
Do not leave RAYOVAC rechargeables in any device for an extended period.
They will leak and corrode your device.
They degrade with each recharge (this from a RAYOVAC tech).
NiMH, while they have a faster self-discharge rate, have more recharge
cycles and will not leak.