Thanks for responding to that, and I'd like to expand on it a bit as well...
All that said, the chance of a catastrophic battery failure is very minimal, especially if you take common sense precautions.
I would not consider even the necessary precautions to be common sense.
I am quite sure a very high percentage of the population, for instance, would not know that pairing batteries is common sense.
But from what I understand, for whatever reason I still do not know, it is of supposedly of critical importance.
There are also a number of other safety practices that I would not consider common sense for the average person.
In fact, I feel the "not really common sense" rule applies to nearly all of the safety practices.
I guess I would go even further and suggest that NONE of this is common sense to the average person.
Years ago there was very little choice if you wanted higher voltages but now there are lots of ways to acheive HV without stacking batteries.
One of the options that you didn't mention is my favorite, and the route I have chosen for now.
I use the 4.8 volt NiMH batteries for my Chucks.
These batteries have the following advantages...
--Used to replace 3.7 volt 18650 batteries
--Inexpensive way to test out higher voltages
--Much safer than Lithium batteries
--Start out well over 5.0 volts off the charger
--Don't have memory concerns like NiCD batteries
Of course, with any recommendation I would also mention the downsides...
--Only 600mAh on the currently available batteries
--The currently available charger doesn't let you know when charging is complete
I welcome any disagreements to my comments above.
I consider disagreements to be a learning opportunity never to be avoided.
