Terminal voltage won't tell you a great deal anyway. It'll let you know the thing's dropped a cell, but usually that's way too late and you'll have been made painfully aware that its not up to snuff before that happens.
To check the things properly you really need a rapid discharge meter. Not expensive and only a rapid discharge test will tell you if its likely to let you down on a freezing cold night in the back end of nowhere. I always stick one across mine when the weather starts to cool off in autumn, before the nasty stuff hits.
|