Quote:
Originally Posted by pwd72s
Have a multimeter? Maybe check battery voltage at the posts when you believe both batteries charged by the alternator. Not all new batteries test great, depending on how long they were in the system before they were sold.
A little $pendy at around $70, but I recently bought a harbor freight battery tester that measures milliamps between the posts. Has good reviews on youtube...more accurate than a load tester. https://www.youtube.com/watch?v=kNyiigm7x14
I dunno...maybe replace the yandina with some sort of manual 3 way switch, carry a multimeter to test voltage?
Anyway, sounds as if your current maintainers aren't putting out enough for your yandina to open up and charge both. Your alternator if working well should be putting out around 14 volts. |
I do (including a 5 digit one and a data-logger that reads nV) but they read fine when charged by the alternator.
I do know other people are using the Yandina on the same type (manf./model) of vehicle, and it works fine - I suspect they are driving the things more often. FWIW, it is a Vanagon - a cult vehicle (and I see guys putting enormous labor & $$ into these things, when could do that to a nice 911 instead... go figure)