View single post by Robert

Posted: Tue Jan 9th, 2018 03:22

Joined:	Sun Apr 1st, 2012
Location:	South Lakeland, UK
Posts:	4066
Status:	Offline

Thanks JK, it was a battle royal last night. Re-using the D1 battery cells wasn't the brightest of ideas I have had recently. The tabs on the cells were trimmed when I first utilised them, now I am having to extend the tabs and tag bits of wire in to make connections. Not pretty or particularly easy considering the very limited space available. I ought to get some nickel plated strips but that's a pain so I am going to plod on and patch this for now. Not very satisfactory but will do a better job with the next one, if I can get another EN-EL4 to cannibalise together with new tagged cells.

Will try to get some pix but this is really just one sticky mess! If I can tidy it up some then I will.

The key to this is fresh cells with nice clean tags, have thought about a spot welder but unless I am going to make a lot of battery packs up it isn't worth it. There is no way I would do this to sell them on as cheap units. Way too risky if one caught fire.

A crude unregulated welder isn't going to make reliable welds so that's a non starter. Even making my own, regulated welder would be quite expensive, well over a hundred quid. Then there would still be some risk of spoiling some cells setting it up. The difference between a good weld and a poor weld is not much with such thin metal.

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Robert.