What's a flash spark? I have a Makita 9v cordless drill, doesn't owe me anything. Batteries are mad expensive for it, like $40. I have a few batteries, one recently croaked, one I got off Ebay was the only time I got ripped off, it was D.O.A. with another cordless Makita that had a wobbly chuck.
Some of my Makita batteries are still working after like 15 years. I've had the chargers croak before the batteries.
I've got a Craftsman reciprocating saw I've been using for around 15 years too, wouldn't say it's junk.
EDIT: Quite a few vids on Youtube. This guy reminds me of Richard Heene, Balloon Boy's nutty dad...http://youtu.be/ENmAJ2GOAMY