Battery Maintainer
I used to leave my motorhome plugged in all the time and let the onboard charger keep the batteries charged. But I found myself having to replace the house batteries every couple of years as I think ...
Forum Discussion
msmith1199 wrote:I would disconnect your neg cable and check to see what your parasitic amp draw is. Mine is about .4 amps if yours is over an amp you may have something left on. A 1.5 amp maintainer should maintain your 12v battery. Like I said in my first post just disconnect the neg cable on your chassis battery after it is fully charged, If it draws down in a week or so you may have a bad cell or sulfated battery. A good battery that is disconnected should last a month in between camping trips even in Ca.stevenicol wrote:
I keep my two 6-volt AGM batteries charged and maintained with a battery tender. You can keep 2 12 volt batteries charged and maintained the same way; connect the batteries in tandem so that the battery's amp hours are added and the voltage stays 12 volts: a 12-volt charger will keep them "full."
I have a 12 volt Battery Tender charger and it doesn't keep them full. That was the reason for the post.
