On 18/12/2020 11:18, Andy Burns wrote:
PeterC wrote:

Bosch 10.8V are now 12V but can be used with the 10.8V battery.

That's just the old marketing vs technical MOAAR POWAH! argument

3x3.6V = 10.8V nominal or 3x4V=12V fully charged
5x3.6V = 18V nominal or 5x4V=20V fully charged
10x3.6V = 36V nominal or 10x4V=40V fully charged

Actually its 3.7V and 4.2V

3x3.7V = 11.1V nominal or 3x4.2V=12.6V fully charged
5x3.7V = 18.5V nominal or 5x4.2V=21V fully charged
10x3.7V = 37V nominal or 10x4.2V=42V fully charged

Of course the voltage is supremely irrelevant and goes back to the days
when all there was was a 600mAh 1.2v sub C nickel cell. If you wanted
more capacity you had to stack em in series.

And you can wind a motor for any voltage you want. And build a lithium
cell to any capacity you want...

--
€œThe ultimate result of shielding men from the effects of folly is to
fill the world with fools.€�

Herbert Spencer