Why doesn't your 9.6v battery pack work? Maybe it's thermally fused. Those are not resettable, and break the current to or from your pack if they get hot. This will show how to remove a broken fuse and reassemble the pack so you can keep rockin' on your merry way. This procedure has been tested twice on a NiCd pack. I don't know if NimH or Li ion packs (if those exist) have thermal fuses, and if so, whether they are configured differently. I think using thermal fuses is a form of designed obsolescence, considering most 9.6v NiCd chargers use higher amperage these days. I purchased this pack from eBay, and purchased a charger from RadioShack. The new charger wrought havoc on the old packs, and my DMM could read no current from them at all. I was at first convinced that the charger had destroyed my packs, but the little devilish statement on the pack, "Thermal Fuse Protected," raised my eyebrow. I decided to rip apart my packs, and what ensued is this, my first Instructable.
http://www.instructables.com/id/Repair-A-Thermally-Fused-96v-Battery-Pack/