I spent a fair amount of time last year doing the math to calculate what we'd need to dry camp with quiet time from 11:00 PM to 7:00 AM each day (no generator running). Experience told me that 2 Trojan 125 were marginal for making it through quiet hours. So we upped the battery set to 4 Trojan 125. Since that time we are good to go.
A couple of reference points. We have a Whirpool TMNF and a CPAP machine that we will run all night. We often will watch TV via a VIP 211Z until about midnight. We dry camp under these conditions for up to 3 months per year.
Lessons learned.
1. Once our invertor hits 11.8 volts it automatically faults out and shuts off.
2. Run the generator for 3 hours to fully charge batteries back up. Try to run gennie from 7:30 PM to 10:30 PM for this purpose.
3. I don't like to use a pony external generator so I change my own oil, oil filter, air filters and spark plugs by standard (150 for oil and air - 500 hours for plugs).
Hope this helps.
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US Army Retired - Loving The Road Trip
Challenger 37TB
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