Johnson controls bought out a123.. I think they will still produce them, but I do not know to what extent.. they were embedded into the auto industry and when electric cars flopped this year, they were overspent..

I had a discharged 123 pack recently.. it was flat too.. added a little voltage via y cord for literally 10 seconds, and it jumped to 5 volts.. then charged at .5 amps.. the trick is not to hit them hard at lower voltages.. When we first started using 123's, I received several of them from Fromeco for testing.. the only problem I found was when you crossed 4 volts per cell, they gassed and stink.. but at 3.75 volts they were fine..

they wont always fail completely from an over charge, but might hold 400 mah or so, and fool you into thinking they are ok if you dont balance them.. if you balance charge, you will catch it..

Its good to periodically cycle the 123s with a load and take out amperage down to about 500 Mah remaining.. my preferred way is two 1156 light bulbs in parallel with a wattmeter.. I stop at 5 volts. I take em down to half way for winter storage, but they are very resilient.. I have only recently found my first dead cell completely.. it was a twin 1100 pack that gave it up totally and wasn't hooked to anything.. it was one of the very first packs I got over 5 years old. Never had a 2300 fail yet except overcharge.