It might be an urban legend, but I think this came up here before... someone
posted that HF's replacement battery packs can be cannibalized ala dremel,
solder, and hot melt glue to install HF batteries in your old kaput battery
pack.

Their 12v battery pack is 1300Mh and is 8 bucks...

http://www.harborfreight.com/cpi/cta...emnumber=46444

HTH,

John Moorhead
Lakeport, CA