My current gen 18v Milwaukee batteries all have on board intelligence and can signal when an issue occurs through flashing lights etc. They are highly protected against fire, shorts etc. The smaller 12v versions do not that I am aware of. The newer M28 batteries, 28 volts with capacities exceeding 40amp hours are coming around the corner. They will be integrated into generators, compressors etc. Exciting new battery tech out there.

This older platform on google groups is not very search friendly, and I was unable to locate much of anything, so I tossed the question out there.