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[Closed] Need some advice on batteries

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[#1818006]

Is there a decent forum or website that has info on batteries?

I want to convert my knackered 18v Dewalt power batteries to lithium. I've got 3 that will no longer charge. I know I could replace individual cells, but could make a far better pack for not a whole lot more and a huge amount less than new Dewalt ones.

I'm thinking of buying 18650 cells off ebay, red surefire ones. Intending on 2 x 5 cells in series in each pack. The idea being the load from each cell will be much less and the pack capacity will be a realistic 4ah using 2500mah ish cells.

Anybody done this?

I already have a multi chem Dewalt charger that does lithium too.


 
Posted : 20/07/2010 7:09 pm
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Maybe Smudge will be along to help .
as you will also need protection circuits in there
Or drop him a mail


 
Posted : 20/07/2010 7:15 pm
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Im sure Smudge will be along soon but I here he's had a tough days riding some gnarly local trails.... ๐Ÿ˜†


 
Posted : 20/07/2010 7:21 pm
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Was hoping so:)

I was only thinking off protected 18650's anyway. I think they'd get killed pretty quick otherwise in my circular saw


 
Posted : 20/07/2010 7:36 pm
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I'm fairly sure they have a thermistor in there too. They won't charge when hot


 
Posted : 20/07/2010 7:37 pm
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Bumping


 
Posted : 20/07/2010 10:17 pm