Laptop Batteries?

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sidewinder
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Laptop Batteries?

Post by sidewinder » Wed Jan 07, 2009 12:18 am

Is there any reason you couldn't use a laptop battery for a RC car? I was thinking of going with a 14.8V lipo for the 1/6 nascar when I build it and I searched ebay for "14.8V"...it came back mostly laptop batteries like this:14.8V, 6600mAh, LI-ion...I didn't see a discharge rate though. Has anyone tried this or researched the idea?

http://cgi.ebay.com/Compaq-R3000-and-Pavillon-Series-14-8-V-Laptop-Battery_W0QQitemZ180318924410QQihZ008QQcategoryZ14296QQssPageNameZWD4VQQrdZ1QQcmdZViewItemQQ_trksidZp1638Q2em124
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betty.k
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Re: Laptop Batteries?

Post by betty.k » Wed Jan 07, 2009 5:47 am

it's not recomended because laptop batteries have a low discharge rate.

discharge rate is listed as a "C" rating, eg: in the case of those 6600mah cells 1C would be 6600 ma (6.6a). so it can safely deliver 6.6a, if you try to pull any more out of it you will damage the cells and they'll probably fail violently.

you want to look for a rating of at least 15C for rc car use, helis and planes can get away with lower ratings.
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sidewinder
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Re: Laptop Batteries?

Post by sidewinder » Wed Jan 07, 2009 3:56 pm

Thanks, I kind of figured there must be a reason I hadn't seen anyone using them...it's a shame though.
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vwmicrosizer
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Re: Laptop Batteries?

Post by vwmicrosizer » Tue Sep 29, 2009 12:14 am

i think there are some 14v drills ou there if not 18v.

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