Forum Discussion

BurbMan's avatar
BurbMan
Explorer II
Apr 14, 2014

Help with Basic Solar Set Up

After years of storing the TT at home we are thinking of moving to a smaller home and putting the TT in a storage lot. One of the luxuries of parking at home is being able to stay plugged in year round and keep the batteries charged up. So I am looking for a small solar set up that will give me enough of a trickle charge to keep the batteries topped up.

Currently have 2 6v batteries that are 8 years old and will likely get replaced this season at some point. I have been looking at Solar for a few years but moving to a storage lot would be the impetus I needed to pull the trigger.

What's a recommended solar set up to keep the batteries charged? Assuming there might be 3 or 4 cloudy days running on batteries, the solar would need to "catch up" and bring the batteries back when the sun comes out. Usage would be minimal...propane detector, idle radio (clock display), about it, and whatever other small draws.

From what I gather I would need a solar panel and a charge controller, any recommendations for size or brands for this application? Is scaling up to add wattage simply a function of more panels?

22 Replies

  • Hi,

    12.5 watts per 100 amp-hours of storage is the very least.

    60 watts per 100 amp-hours is enough to equalize the battery bank.

    With panel prices in decline it may actually be cheaper to buy a larger wattage panel than a smaller wattage.

    I would not skimp on the controller.
  • I don't know the size of solar set you would need for that job, but whatever, disconnect the rig entirely by removing a wire from the battery bank so only the solar controller is on the bank. You don't want any draw opposing the solar trickle.

    Smk on here is always worried about how long the controller would keep the batts at 14.x each day while doing storage. You want to drop to Float voltage as early in the day as possible, so finding a controller that will do that is important.

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