NICAD Battery Idea

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BCRandy - 10 Nov 2007 17:01 GMT

I have a Ryobi 18 v drill that uses nicad battery packs. I
took a dead one apart and found 15 Panasonic cells with
welded tabs and a capacitor between the + and - poles. They
were sub-C cells. Though un-marked, they must have a
reasonably high capacity, as I have driven over 100, 2"
screws through cement board and 3/4" plywood without needing
a charge. They are available at Home Depot for about $36 a
pair. That is way less than the $88 needed for to buy four
3000 mAh 7 cell packs. Any reason why this wouldn't work?
Is it worth the effort for my nephew's "play" boat?

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John - 11 Nov 2007 01:31 GMT

BCRandy;834 Wrote:

> I have a Ryobi 18 v drill that uses nicad battery packs. I
> took a dead one apart and found 15 Panasonic cells with
[quoted text clipped - 6 lines]
> 3000 mAh 7 cell packs. Any reason why this wouldn't work?
> Is it worth the effort for my nephew's "play" boat?

I'm no electric guru, but at that price and it's for a play boat.....
I'd say go for it.

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John

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Kevin - 11 Nov 2007 10:13 GMT

> BCRandy;834 Wrote:
>> I have a Ryobi 18 v drill that uses nicad battery packs. I
[quoted text clipped - 10 lines]
> I'm no electric guru, but at that price and it's for a play boat.....
> I'd say go for it.

they should work ok, I have done it with cheap packs which were only
1000mah or so, but for a play boat who's going to care if they don't
last as long

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Jim - 16 Nov 2007 20:41 GMT

Those batteries have very bad discharge rates. Not very high because they
don't have to be to run a drill. However, for model application, you want a
higher discharge rate. If you're running a tugboat or something like that
they will be fine. If for a racing boat, no.

>I have a Ryobi 18 v drill that uses nicad battery packs. I took a dead one
>apart and found 15 Panasonic cells with welded tabs and a capacitor between
[quoted text clipped - 4 lines]
>$88 needed for to buy four 3000 mAh 7 cell packs. Any reason why this
>wouldn't work? Is it worth the effort for my nephew's "play" boat?

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Kevin - 16 Nov 2007 22:28 GMT

> Those batteries have very bad discharge rates. Not very high because they
> don't have to be to run a drill. However, for model application, you want a
[quoted text clipped - 9 lines]
>> $88 needed for to buy four 3000 mAh 7 cell packs. Any reason why this
>> wouldn't work? Is it worth the effort for my nephew's "play" boat?

he did state play boat ?

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Model Forum / Radio Controlled / Water Models / November 2007

NICAD Battery Idea