What battery? I've found a couple packs that have, imo "good" wire. The Reedy 1600 pack and the muchmore 1500 pack have a thicker, silicon wrapped wire. the Reedy cell quality may be a little suspect...bought two packs, one was junk the other was good. Buying NIMH packs is tough cause shelf life is not great.

I have been very happy with the Muchmore packs, just like all there stuff they seem to be great quality for a little extra $$$.

My former LHS only stocked Venom 1600's I ran those a lot, cell quality and life was good but the wires and connectors were below par.