:Educated guess unless you have a good battery monitor.
Thanks Lenny
So would THIS qualify as 'a good battery monitor' ?
Votronic 1250 LCD-Solar-Computer S
<p>If you find yourself asking the following, How much energy does my solar system actually produce? Is the auxiliary battery fully charged? Are th...
www.roadpro.co.uk
or do you mean a different type of device . . .
: