Battery Type for Dual-Battery 1HDT? (1 Viewer)

[Dork]

Just to add my recent learnings. I bought a pair of Odyssey 34/34r to put in my hdj81. Was doing work to my truck over a span of far too long, and left them connected which ended up draining them pretty horribly. After some repair cycles with the charger, they both lose voltage while just sitting on the bench, but one at a MUCH faster rate than the other.

They would have been in parallel the whole time, so it seems to me that you can't count on batteries being identical long term. Or something.

 

[mudgudgeon]

Just to add my recent learnings. I bought a pair of Odyssey 34/34r to put in my hdj81. Was doing work to my truck over a span of far too long, and left them connected which ended up draining them pretty horribly. After some repair cycles with the charger, they both lose voltage while just sitting on the bench, but one at a MUCH faster rate than the other.

They would have been in parallel the whole time, so it seems to me that you can't count on batteries being identical long term. Or something.

Batteries don't like to be left sitting.

I've lost a couple of expensive batteries the same way. Very frustrating.

 

[duece71]

Looks like I should change BOTH batteries at the same time when the time comes. This is a good thread.