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dus10lee
09-28-2005, 09:59 PM
I am trying to understand something about batteries. Someone might say I should put this in the battery area, but I am new and I think this might help out some begginers in my situation. I am thinking about building an Estarter and I was looking at the required battery specifications. It states:

Battery: 7.2-8.4v AAA 500-730mAh NiMh or
7.2-8.4v 270-400mAh 2/3 AA NiCd or AA 600mAh NiCd

What I dont understand is, do you have to use 500-730mAh for NiMh or can you use a larger size for longer flight time? Is this just stating the minimum needed? Also, do you have to use AAA NiMh or can you use any size battery? I noticed most larger size batteries have 2/3A or 4/5AA cells. If I stay within the required 7.2-8.4v range would using a GWS 7-Cell 8.4V 2100mAh NiMH A2 work?

flyranger
09-28-2005, 10:04 PM
More amperage on NIMH cells will result in a larger battery package. Will your plane have enough room? More amperage also means more weight - will the plane still balance. Do you have enough room to move the heavier batt pack to compensate?
Check cheapbatterypacks.com. They give the weight and dimensions for their units.

meegosh
10-04-2005, 03:25 PM
Excellent site, thanks for the link. I was looking for a site like this! +1 Rep

Rugar
10-04-2005, 10:51 PM
Nice thing with the E-Starter is that the battery hatch is located nearly on the CG. You can cut the hatch longer and wider for a larger pack and still maintain your CG. But you still want to keep it as light as possible.