If you would like the convenience of automatic charging - and many more discharge-charge cycles from your stock NiMH pack - you may want to consider an intelligent, drop-in charger. Like what BatteriesAmerica.com offers ...
EMS-57-83 Desktop Rapid Charger - for both NiCd & NiMH batteries.
Charges battery alone, OR you can insert the entire HT. FAST /
SMART / EASY TO USE ! Fully automatic; no buttons to push. Charges
battery swiftly, then shuts down to trickle charge when battery is full.
Includes worldwide AC-DC wall power supply (100-240VAC input).http://www.batteriesamerica.com
Clint Bradford K6LCS