Testing the battery
I have installed a battery that I was concerned with. It seems to be fine. Is there a way to "test" the battery with it installed and using just the trailer's on board equipment?
Forum Discussion
Google up "Battery Load Tester" and get one of the small portable ones. Many available in the $30-50 range and all are satisfactory. For a precise test, disconnect one pole of the battery, either will do. If you only have one battery, you don't even have to disconnect anything. Just make sure everything in the rig you can turn off is turned off.
I've carried one of these for years and diagnosed a bad cell in one of my starting batteries while on the road in the southwest. By knowing exactly what my problem was, I could baby the rig all the way home and then get replacement batteries from a well known shop that stands behind their products. Not always true from fly-by-night sellers selling who-knows-what from who-knows-where at Oh-My-God prices.
I've carried one of these for years and diagnosed a bad cell in one of my starting batteries while on the road in the southwest. By knowing exactly what my problem was, I could baby the rig all the way home and then get replacement batteries from a well known shop that stands behind their products. Not always true from fly-by-night sellers selling who-knows-what from who-knows-where at Oh-My-God prices.
