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Originally Posted by Hard Time

I'm not going off the actuator idea but would a good battery pack be 8xAA rechargables put together and then have a heatshrink around them?

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Nope, those don't have terribly high capacity and have dismal discharge rates.

You want significantly better cells than those.

what kind of batteries do you recommend then?

are overlander batteries good

i would buy from this store on ebay, good prices and good products never had any touble form the cells and the guys there are great for advice

http://stores.ebay.co.uk/componentshop

What about these batteries http://cgi.ebay.co.uk/5-PCS-A123-NEW-18 ... _Batteries or are lead asid better

I think there lipos wich means you need speshal equipment to use them

You'll need a lipo charger and possibly a power supply.

I've got a lipo charger that I use for my RC car that charges at 0.5a, 1.a and 2.5a is that good enough?

Aren't those a123s?

yeah those are a123's