I have used alkaline cells from time to time in
my vx150 which has the same form factor as the '60.
In the EMA that I work for we use nickle-metal in
the summer and ni-cad in the winter.? When the temp gets below freezing,
the ni-cads work better.? If a lithium pack us available for a particular
radio we definitely will use it.? There is a lithium available for the
vx150 and should also work in the '60.? It works fine but needs a charger
that will charge that type of battery.
In regards to alkaline cells, don't forget
that they drop voltage during their lifetime.? The
rechargeables-regardless of their type usually hold the voltage until at least
80% of the capacity is used.? Therefore you will experience a power drop
gradually during usage of alkalines.
?
In the Chicago area the fire services still
use rechargeable batteries for the most part.
?
In closing, I would say to you, try
the alkalines and see where they take you.? In your situation they may be
what works best.? I keep an extra case with alkalines near by just in
case.