Well I tried my 20 block of series 9v cells they were a bit over voltage (brand new) so it was about 189.5v all told
I tried with this first as it gives easy voltage taps for the bcm.
Anyway that gave an immediate P1576 MDM Over voltage error. No surprise really but it might have worked.
I shall try the potential divider tomorrow and I'll add an extra variable 10k resistor at the positive end so I can lop off the top few volts. Or I'll remove a 9v cell or two Until it works. I might try it with 100k resistors first as that would reduce by a factor of 10 the current drain from my little test cells. Down to 180ua from 1.8ma if I use 10 x 10k.
Peter
