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Charging NiMH battery pack - Page 2

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Posted by Clifford Heath on June 18, 2021, 12:16 pm
 
On 18/6/21 9:07 pm, Jim Wilkins wrote:

I did a similar refit using 4 26550's on a Ryobi pack that had has 11  
sub-C NiCd. I still use it every day, but one cell in particular is  
becoming weak:

<http://polyplex.org/electronics/ryobi_lifepo4/index.html>  

CH

Posted by David Billington on June 18, 2021, 10:12 pm
 
On 18/06/2021 12:07, Jim Wilkins wrote:

I worked out the peak current by measuring the motor resistance and  
selected suitable new cells from a vendor which could supply them with  
tabs already welded on. With the cost of the cells and a few other bits  
it might have been better to buy a new drill as it might not have been  
much more expensive but it was interesting to do it. I've only done the  
one pack at the moment but have all the bits ready to do the 2nd just  
need to get the soldering iron out.


Posted by Jim Wilkins on June 19, 2021, 4:26 pm
 I stripped a dead battery pack for its connector, which I mounted on a  
dowel. It had been spot-welded to the (-) end of a NiCad. For part of the  
fitting I completed an adapter to clamp a Dremel in a lathe tool holder, and  
wish I'd done it years ago, it's so handy!


Posted by David Billington on June 19, 2021, 6:30 pm
 On 19/06/2021 17:26, Jim Wilkins wrote:

My neighbour has done the same so he can mount his Dremel on his Myford  
for various operations. Needed for one job and then found to be useful  
for many others. Similarly I can mount a couple of my die grinders on my  
lathe. Some years ago I introduced him to my new to me linisher and he  
found it so useful he kept popping round to use it, in the end he bought  
his own and got it at a good price I guess as the auction finished  
Sunday lunchtime when the football was on.


Posted by Jim Wilkins on June 19, 2021, 8:43 pm
 
On 19/06/2021 17:26, Jim Wilkins wrote:

My neighbour has done the same so he can mount his Dremel on his Myford
for various operations. Needed for one job and then found to be useful
for many others. Similarly I can mount a couple of my die grinders on my
lathe. Some years ago I introduced him to my new to me linisher and he
found it so useful he kept popping round to use it, in the end he bought
his own and got it at a good price I guess as the auction finished
Sunday lunchtime when the football was on.

----------------------

Somewhere I have a laminate trimmer head with a 1/4" collet I bought cheap  
intending to mount on the lathe. It won't be as easy as the Dremel which  
already had an adapter for my small lathe that could be quickly modified.  


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