One Christmas, I was given a shiny new 14.4V Craftsman NiCad drill with two batteries. These were not cheap and I was young and broke and very grateful for the thoughtful gift. It worked great and I enjoyed it immensely. For about a year.
After that, neither pack would hold a charge long enough to be useful. Which I thought was pretty disgusting. Come to find out, this was basically the normal standard to which Craftsman had finally sunk. Rather than do the rational thing and throw it out, I held onto it with with a grudge and a goal of actually making it useful again one day.
A few years back, I found a decent deal on brand-new 18650 high-current LiFePo4 batteries from a reputable supplier ($2.50 each, sadly NLA) and bought up a bunch to remake the packs for this drill and a couple others I had laying around for similar reasons. I added an inexpensive but well-made BMS (which I tested thoroughly before implementing) and the voltage was upped to 16V nominal for a little extra kick. Don't ask how I spot-welded the tabs to the batteries.
4.5 years later and these drills are still going strong, I use them at least once a week on both small and large projects. They are not speed demons or torque monsters, but they drill all the holes I ask them to. Would I have been better off economically throwing these ones in the garbage and just buying the cheapest thing from Harbor Freight? Maybe.
But spite, it turns out, is its own reward and I would do it all over again a heartbeat.
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