ORIGINAL: r/cnerd

I don't think the problem was your soldering, it was the cells!!

The Energizer aaa's suck for high current. They are not sanyos, they are chinese cells.

only the Energizer AA's are Sanyos, and are Japanese.

In battery manufacture there is always the trade off between high current handling ability and capacity. This is why the 850's put out less current than the 650's (as well as the quality/design).

If you are looking for a really cheap way to power your BCP check this out:

http://www.balsapr.com/common/search...ductId=T913427


It should be noted that ni-cads in general kick butt on ni-mh for high currents, especially in the cheaper stuff.

have fun!!