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Batteries

Old 07-06-2005, 07:54 PM
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wiz0852
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Default Batteries

I want to go to a 4 cell battery pack and I was wondering what the max voltage is that can be used with my futaba am reciever I want as many Ma`s as possible but I don`t know the max or best voltage to use.... seems to me 4.8 volts is a little low... thanks, gary
Old 07-06-2005, 08:44 PM
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piper_chuck
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Default RE: Batteries

4.8 is perfectly ok. Much of the current equipment will also work on 6 volts, but some servos will not. You can get quite high capacity 4.8 volt packs..
Old 07-06-2005, 08:45 PM
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olguy
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Default RE: Batteries

The receiver is rated for 6 volts. I use cheapie AA alkaline batteries from someplace like the dollar store. I get the cheapest I can find in, quanity. I don't know what m/a they are but they seem to last "forever". By using Alkaline vs. Ni-Cad you get a full 6v.(4x1.5v) vs 4.8v (4x1.2v). 6v will give your servos more turning speed and tourque. Your transmitter and receiver will gain range also. I get 3 or 4 or more outings before I chuck them and put in fresh ones.
Old 07-06-2005, 09:51 PM
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biteme
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Default RE: Batteries

whether you are using NiCd, alkaline, NiMh, LiPo, or even lead acid, the 'Ma' is a measure of how big the battery is. If you want more run time, you need bigger batteries, not more. If your battery pack is made for AA size, upgrade to C or even D size, the voltage will be the same, for the same number of batteries, but the Ma will be greatly increased, regardless of which type of battery.
Old 07-06-2005, 10:17 PM
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Default RE: Batteries

As I said, not all equipment is rated for 6V. There are a surprising number of servos that are specifically NOT to be used for 6V, so check before upgrading. I don't use alkaline because I've got plenty of charging equipment for my planes and I don't like constantly having to buy new batteries. You can get 2300 mah NiMH batteries for a great price at Walmart, Target, etc. I'm now using them in all my remotes at home. It's been a while since I bought a throw away battery. Also be aware that many of the 2 channel receivers on the market have BEC, which automatically regulates the voltage so it does not excede 5.0V. If you're using one of these, there's little point trying to go to a 6V battery pack.

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