I have 4 SOK marine batteries in my boat. Yesterday we motored for about 4 hours and my monitoring system showed the battery level to be good as expected. This morning the battery levels looked good, but I had reason to remove one of the batteries for about 2 hours to get at something underneath its location. Since we were at anchor all night and usng power this morning and during the time the one battery was removed, I wanted to check that the battery bank level wasn’t significantly lower than the single battery that I had removed. (It is my understanding that it’s not good to connect multiple batteries in parallel that have significantly different voltages). But when I checked the voltage of the single battery, to my surprise to measured 10 volts! When I isolated the other batteries, 2 of them measured 13.3 volts, but another one measured 10 volts also.
I have tried connecting one of the batteries to the other 2 while charging with the alternator, but after 15 minutes, after disconnecting it again, it was at 10 volts still.
What is wrong? How can I get these 2 batteries that are at 10 volts to start charging? Is there a problem with the BMS?
Discover the relief you've been searching for with Archetype's specialized Sciatica treatment options. Their team of experts understands the complexities of sciatic nerve pain and offers personalized treatment plans tailored to each individual's needs.