Recell or bin?

[8ob]

I have accumulated rather a lot of dead batteries used in my cordless 18v gear over the years, currently have some new ones but am wondering if its worth pulling these apart for a recell and are the results worthy of the time and effort Vs just buying new?

Bob

 

[rikrobson]

The problem with re celling is that you need to connect to the electrodes on the cells but you cant much heat on as you join whoch makes soldering tricky. This is why thay are usually spot welded alot of heat for a very short time so the heat does not conduct into the cell whereas soldering nneeds to put a lower heat for longer but this is actually putting more energy in.if the drills are ok then it would be worth re celling them

 

[angellonewolf]

if its just one or 2 cells gone down yes replace them but if more than that prob not worth doing as the cost of the cells together is prob more than the cost of a new battery

 

[angellonewolf]

The problem with re celling is that you need to connect to the electrodes on the cells but you cant much heat on as you join whoch makes soldering tricky. This is why thay are usually spot welded alot of heat for a very short time so the heat does not conduct into the cell whereas soldering nneeds to put a lower heat for longer but this is actually putting more energy in.if the drills are ok then it would be worth re celling them

you can but cells with the tabs attached makes things easyer

i did change the battery in my ixo bosch only a few days ago the battery i was looking at was only £4 and a few pence but after a long look the cheaper batterys dont have the power drain capabilitys the battery cost me £5.99 and that was posted with tabs attached so fitting was 8 mins total works like new now but there was only 1 battery to replace as i bought it for £3 got the lot for 9.50 yes i could have bought a 2nd hand one for £10 working but the battery would be half knackard so i think i got a better deal

ps mine was a lithium battery but think the same applys for the older cells as well add some of them are molded plastic and melted together not easy to get back togther unless they are screwed

when you looking for battery cheak all the specs of the battery you have in the units as with drills and nearly anything with motors in they need to beable to coape with the battery drain

 

[8ob]

Thanks for the input chaps, Mr @mrfuzzy I have never seen an adapter like that, had I known about that I would have gone that way.

I pulled one apart and it looks way to fiddly for my fat fingers Without pulling the whole lot apart is there a way of testing individual cells, I may be able to make up a couple of decent ones by sacrificing a few.

Bob

 

[gaz1]

what you can do is mix and match from what you have already the rest throw away

 

[ukracer]

The problem with re celling is that you need to connect to the electrodes on the cells but you cant much heat on as you join whoch makes soldering tricky. This is why thay are usually spot welded alot of heat for a very short time so the heat does not conduct into the cell whereas soldering nneeds to put a lower heat for longer but this is actually putting more energy in.if the drills are ok then it would be worth re celling them

We used a 12 volt large tip iron when we usec nicads in RC racing.

 

[Seadog]

Without pulling the whole lot apart is there a way of testing individual cells,

Yes. The fact that they're all connected together is irrelevant. As long as you can get a meter to both ends of every cell, you can measure the voltage of each one. The faulty ones are usually very low compared with their good neighbours.