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Solar AND shore line

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What happens when you're plugged into shore line and it's a sunny day? Does the charger take as much solar as it can, then supplement with shore power? Or does it just go on shore power and ignore the solar? 

Stephanie and Dudley from CT.  2022 LE2, Hull #1150: Eggcelsior.

Tow vehicle: 2016 GMC Sierra 6.0 gas dually 4x4.

Our Oliver journey: Steph and Dud B's RV Screed

Where we've been RVing since 1999:


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They are separate systems, but they do interact gracefully. The converter (charger) voltage is high enough that the solar sees the batteries as charged, so nothing happens from the roof. Disconnect shore power, the voltage drops, and the solar picks up automatically. Everything is based on the battery voltage. You don’t have to worry about any of it.

John Davies

Spokane WA

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SOLD 07/23 "Mouse":  2017 Legacy Elite II Two Beds, Hull Number 218, See my HOW TO threads: 

Tow Vehicle: 2013 Land Cruiser 200, 32” LT tires, airbags, Safari snorkel, Maggiolina Grand Tour 360 Carbon RTT.

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I left my charger on all the time when I had AGMs. Between the solar and charger the batteries were almost always in a good state of charge without me worrying about anything.   With lithiums, the Battle Born rep recommended turning the charger on only when needed to charge.  So, ours is off 90% of the time.  The solar charges the batteries to 100% pretty quick on a sunny morning and on cloudy days by early/mid afternoon.  I’ve used the charger on really dark days a few times.  Mike

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Texas Hill Country | 2016 Elite II #135 | 2020 Ram 2500 6.7L


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