Downsizing to smaller rig, battery capacity
The one I'm looking at holds two standard size 12 volt batteries. I have to run a CPAP @ 3.75 amps and an oxygen concentrator @ 7.9 amps for about 8 hours. I don't know if two standard size batteri...
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If you add in what the rig is using for the fridge etc you will most likely be pulling 13 amps. Mulitply that by say 10 hours equals 130 AH down. You need more like three group 27 or four GC2 6 volts. You also need to consider your draw between no sun and bedtime if on solar.
If topping off 100% on generator at bedtime then go back to about 130 ah draw down. As mentioned, if you are drawing them down far it takes a considerable amount of time to completely charge so you go into the next night full. If not they will start dropping more and more.
As you do this check the specific gravity at times to be sure you aren't walking them down by not fully charging.
You don't need to dip them constantly, you just need to dip enough to be sure your energy management program is working.
If topping off 100% on generator at bedtime then go back to about 130 ah draw down. As mentioned, if you are drawing them down far it takes a considerable amount of time to completely charge so you go into the next night full. If not they will start dropping more and more.
As you do this check the specific gravity at times to be sure you aren't walking them down by not fully charging.
You don't need to dip them constantly, you just need to dip enough to be sure your energy management program is working.
