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Author Topic: choosing batteries  (Read 4774 times)

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Offline jshalcottTopic starter

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choosing batteries
« on: March 30, 2007, 10:03:27 AM »
my robot is more larger than normal robots so i'm going to use a couple of 18v motors. can anyone recomend me a type of battery and where to get this battery.
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Offline jshalcottTopic starter

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Re: choosing batteries
« Reply #1 on: March 30, 2007, 04:12:58 PM »
Ok, screw everything I just said above. I got 4 regular 9 volt NiCad rechargebles. But they are seperated, how do I put two of the batteries together
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Offline Somchaya

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Re: choosing batteries
« Reply #2 on: March 30, 2007, 04:15:06 PM »
Put them together? Just wire them in series?  :)
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Offline jshalcottTopic starter

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Re: choosing batteries
« Reply #3 on: March 30, 2007, 04:32:55 PM »
so wire the negative to the positve and the same with the other
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Offline ed1380

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Re: choosing batteries
« Reply #4 on: March 30, 2007, 05:19:13 PM »
positive to negative and negative to positive and etc. will add the voltages together. positive to positive and negative and negative will add teh amp/hour rating
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Offline jshalcottTopic starter

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Re: choosing batteries
« Reply #5 on: March 31, 2007, 12:03:38 AM »
so which one would be better
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Offline Somchaya

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Re: choosing batteries
« Reply #6 on: March 31, 2007, 12:24:02 AM »
If you want to connect 2 9V batteries together to get 18V then you'll want to do them in series (positive to negative connection).

If you connect them in parallel (positive to positive), the overall voltage will remain at 9V but you'll have more battery life.

So from what you're describing, I think you want the series connection :)
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