RE: LiFe packs
Got to share a charger story. We bought a Bissles Spot cleaner, a little battery powered vaccum with a pump for spraying the cleaner on the carpet. The orginal batteries were junk.After fighting it for over a year, i replaced the batteries with some NiMh 5200mah cells. Ismoked the charger board in the cleaner the first time I hooked it up. So, I bypassed the charger electronics and made a cord for it that fits my field charger.This has worked great until the other day. Igot the cleaner out and decided it was due for a recharge, it had been a couple months since it's last charge. Well I didn't move quick enough I guess. Later that day, my wife came in from her walk and the first question, "what are you doing, something smells hot" Nothing. Then she found the sorce of the Hot smell. She had grabbed the 12V wall wart for my AA cell charger and plugged it into the cleaner. 12VDCat 1.5A for I'm not sure how long. The cleaner was so hot on the bottom you couldn't put your hand on it. Another hour and I'm sure that we would have had a fire. I'm not sure how the batteries faired. They state that they should be charged at 1 amp maximum on a peak charger. When I turned on the cleaner, while it was still hot, it sounded as if it would pull the carpet off the floor.I've yet to cycle the pack to see what damage was done.
Iguess guns are not the only thing that should be locked in a house. With half our life controled by either battery chargers or wall wart power supplies, and only about three basic types of power connectors, using the wrong charger is just a mild brain fart away. Even on my PC, I blew out the keyboard port on my mother board when I plugged the Brother PCLable printer's power pack into the keyboard slot. It fit just fine. Didn't work so well though.
Don