NICAD Battery Idea

[BCRandy]

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?

[John]

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
> 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?

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


--
John
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[Kevin]

John wrote:
> 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
>> 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?
>
> 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

[Jim]

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.

"BCRandy" <RMAHEUXR@bellsouth.net> wrote in message
news:QtlZi.1296$K35.435@bignews5.bellsouth.net...
>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?
>

[Kevin]

Jim wrote:
> 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.
>
> "BCRandy" <RMAHEUXR@bellsouth.net> wrote in message
> news:QtlZi.1296$K35.435@bignews5.bellsouth.net...
>> 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?
>>
>
>
he did state play boat ?