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Is your point that I've been around for a long time, believe in science and don't know much about deep cycle batteries?
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Is your point that I've been around for a long time, believe in science and don't know much about deep cycle batteries?
lol just figured you'd had to deal with power sources off and on (no pun) over your tenure.Is your point that I've been around for a long time, believe in science and don't know much about deep cycle batteries?
Just starting batteries... and lately struggling with/worrying about running the fridge off of the 2003 Yukon XLs starting battery.lol just figured you'd had to deal with power sources off and on (no pun) over your tenure.
I'll get there once I have a more dedicated travel/exploring rig.
Ok...what do you offer in trade?Just starting batteries... and lately struggling with/worrying about running the fridge off of the 2003 Yukon XLs starting battery.
Not kicking a dead horse at all. I have considered a suitcase system for easy portability. We'll see how things work out this season - I'm not going to be out in the wild so much that I can't run the truck if need be.I am doubtful that a 100ah non-lithium battery will last 3-4 days, outside of winter. On warm nights (lows around 60) my 55ah agm will drop from 13.0 at sunset to 12.5 by morning. That's 1/2 of my "usable" capacity, or 1/4 of yours in a 12 hour period.
I know you don't have a designated expo rig, but I'd strongly consider buying a panel and controller that you would use on your future rig and propping it up/lay on the ground at camp. You'll have zero power issues then, and when you get your future expo rig you'll already have the parts.
I'll stop kicking the dead horse now
Agree if not opened much. Just from personal experience I hear my fridge run more if not full verse near empty.I think there may be some misunderstanding out there as to whether the effect of the fridge contents is affecting things a lot.
In principle, if the fridge is NOT opened, and it has reached dynamic steady-state, whether it's empty or not should not make any significant difference in run time off the battery, yet I see that mentioned a lot. Of course, it does make a big difference as to how long it takes to reach that steady-state, but that is a different story.
Now, if you open the fridge and replace the cold air inside with hot air then yes, in principle it being full means less hot air in so working less hard to bring the air temp back down. But the air mass has comparatively little heat content so again, probably not a huge effect.
I think there may be some misunderstanding out there as to whether the effect of the fridge contents is affecting things a lot.
In principle, if the fridge is NOT opened, and it has reached dynamic steady-state, whether it's empty or not should not make any significant difference in run time off the battery, yet I see that mentioned a lot. Of course, it does make a big difference as to how long it takes to reach that steady-state, but that is a different story.
Now, if you open the fridge and replace the cold air inside with hot air then yes, in principle it being full means less hot air in so working less hard to bring the air temp back down. But the air mass has comparatively little heat content so again, probably not a huge effect.
The two ports are both cigarette lighter type.... One is the hella type which is a smaller and the cigar is a regular cigarette lighter. I'm plugged into the cigarette lighter port for the ARB fridge.digital voltmeters are typically very accurate, even the cheapo ones. The LED bars OTOH, not so much usually. The little wattmeters I mentioned earlier also typically have a voltage display, that is convenient for monitoring. Keep in mind that when the compressor is going on DC, there will likely be a significant voltage drop between the battery and the fridge if the distances are not very short or if the cables are thin, because you likely will be pulling a few amps.
You will also find charts online showing the relationship between voltage and charge level. Unfortunately, they are kind of all over the place from what I recall. And that is complicated by the fact that those should really refer to a rested battery, not one being used.
(What are those 2 ports referred to on the pic?)