How Many Batteries Are Needed To Boondock
Question:
I have this Go Power 190 watt over lander system dealer installed on my Jayco 12SRK with the basic 30 amp PWM controller dealer also installed a basic lead acid combo battery. Only running a 12v compressor cooler/fridge, lights, charging mobile devices, and CPAP at night for 2-3 nights between moving off grid camp sites charge while driving at a time. CPAP will need to run for 6-8 hrs at night. I’m guessing I’ll be best to run two batteries, maybe even AGM, due to not much load. Does this sound like it would work?
asked by: Ric M
Expert Reply:
The Go Power Overlander Solar Charging System with Digital Solar Controller # 34282181 in peak conditions is going to recharge approximately 50-60 amp hours a day so you would need to gauge the amount of power you're going to use. To do this you would need to know the wattage needed per day for each item you plan on using and can then get the correct amount of panels and batteries to meet the need.
Typically I recommend just boondocking in your driveway, if possible, to get a more accurate gauge of how much energy you use without the risk of running out. Follow these simple steps to determine how much power, on average, you consume in a day:
Step 1: Settle out in the boondocks for a couple of days and use your RV as you normally would—don't try to conserve power any more than you usually would, and don't use your generator. Just camp normally.
Step 2: Use your voltmeter or a battery monitor to keep track of your battery level. Note that lead-acid batteries should never be discharged below 50%. Going below this mark will shorten the battery's lifespan.
Step 3: Do the math to determine how much power you typically consume in a day. Let's say after two days, your 200 amp-hour lead-acid batteries are at 50%. This means you used 100 amp-hours in two days, or 50 amp-hours a day.
NOTE: If you can't even make it through a day without draining your battery, consider adding to your RV's battery bank. All the solar panels in the world won't help if you don't have enough battery capacity to store the power you require. Ideally, you should be able to go at least 2-3 days before your battery is depleted.
I've attached some Solar Power articles below that offer a ton of useful information that I highly recommend reading. IF you have any further questions please feel free to reply back.
Product Page this Question was Asked From
Go Power Overlander Solar Charging System with Digital Solar Controller - 200 Watt Solar Panel
- RV Solar Panels
- Roof Mounted Solar Kit
- Rigid Panels
- 200 Watts
- 5.1 - 10 Amps
- AGM
- Flooded Lead Acid
- Gel
- Lithium - liFePO4
- 59-1/8L x 26-5/16W Inch
- 1 Panel
- Go Power
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