I agree with lightfoot about the voltmeter.....whatever you use should put a load on the battery to get a proper reading...also, the hobby-specific voltmeters can be switched between a 4.8 or a 6.0 volt pack.

I also have 2 glow plug starters...I prefer to use the Ni-Cad version because it has no wire, but I keep the panel plug-in type for a backup also.

I like the Great Planes prop balancer also....it's small, cheap, simple, and really does the trick.....I highly suggest you balance your props one way or another.......FHHuber described extacly what can happen if you don't.....

Mike