"Stephen Trapani" wrote in message
news
Pete C wrote:
On Jul 26, 3:52 pm, "KLC Lewis" wrote:

It takes me about 10 - 15 minutes to check all of the cells in my bank.
This
is with the boat sitting calmly at the dock. I would much prefer not to
have
to open those cells with the boat in motion, sloshing battery acid
around.
If a meter will give me reasonably accurate information, which I can
verify
from time to time with a physical check of the electrolyte when it can
be
done safely, so much the better.

Well, buy a Smartguage then!

Can't a person extrapolate state of charge with a simple voltmeter?

Stephen

From all the websites I've been looking at, it would appear that each
company's product is the only one that works. But as I understand it,
voltage tells you how much potential for doing work is there, but it won't
tell you for how long that work can be done.