Circut board in a little 3s Zippy pack

[Sammus]

All the zippie/turnigy/rhino packs I've had (about 20 packs in total) all have that.

My turnigy ones died the other day (25C 5000mah) which I was POed about, theyd only had about 5min easy running on them. I cut open the end and found the problem. See in your middle pic there is like an 'S' shaped blob of solder connecting the neg of cell 1 (ie cell with pos power lead coming from it) to the pos of the middle cell. The little thin connecting part had burned away, and so had the trace bit on it, so I couldn't solder it together by itself. I ended up cutting up some desolder braid to make a bridge between them.

Lucky it did melt, because my MMM died and shorted the battery and it acted like a fuse to disconnect the battery. In both pairs of packs I bought. I'm beginning to think it did it on purpose, now I'm afraid if something similar happens the solder will melt and the braid will attach itself to another tab and short one or two of the cells... hmm