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Thread: Solar suitcases in parallel?
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10-23-2022, 06:25 PM #1
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Solar suitcases in parallel?
I have a Renogy 200 watt solar suitcase with built in 20 amp PVM charge controller. We've used it for a couple years with good results. 13.5 amps is the highest output I've seen from the single suitcase. I'm considering adding a 2nd 200 watt suitcase. Any reason I can't just wire them together in parallel and continue to use the 10 gauge SAE plug I already have on the side of my 31G?
2021 Momentum 31G
2021 20' Haulmark Edge race trailer
'17 Ram CCLB 3500 dually 6.7 turbo
'96 Chevy C3500 CC dually 454
2019 Honda Talon X
1985 Honda FL350R Odyssey
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10-23-2022, 06:30 PM #2
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Mark & Mary. Full-timing across the USA (and Canada)!
Current Coach: 2021 Grand Design Reflection 320MKS
Current Rig: 2019 Ford F350 SD Crew Cab, w/8' box, Lariat, SRW, 6.7l Diesel
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10-23-2022, 06:53 PM #3
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10-23-2022, 06:56 PM #4
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How many batteries do you have?
If only one, you should only use one charge controller, unless you are willing to make a combiner box that has diodes so the electricity flows out and never in. Electricity takes the path of least resistance; if one charge controller isn't putting out the same voltage and amperage as the other one, it is possible for one to feed the other and possibly cause a fire.Mark & Mary. Full-timing across the USA (and Canada)!
Current Coach: 2021 Grand Design Reflection 320MKS
Current Rig: 2019 Ford F350 SD Crew Cab, w/8' box, Lariat, SRW, 6.7l Diesel
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10-23-2022, 07:01 PM #5
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10-24-2022, 07:42 PM #6
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Just for conversation's sake I decided to buy the 2nd 200w suitcase. I'll remove both PMV controllers. I ordered a Victron 100/30 smart MPPT charge controller and Victron bluetooth battery sense module. I'll leave the individual panels in each suitcase wired in parallel and then wire the 2 suitcases in series. Hopefully that will give me a nice boost in charging power.
2021 Momentum 31G
2021 20' Haulmark Edge race trailer
'17 Ram CCLB 3500 dually 6.7 turbo
'96 Chevy C3500 CC dually 454
2019 Honda Talon X
1985 Honda FL350R Odyssey
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10-24-2022, 07:52 PM #7
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10-24-2022, 08:01 PM #8
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2021 Momentum 31G
2021 20' Haulmark Edge race trailer
'17 Ram CCLB 3500 dually 6.7 turbo
'96 Chevy C3500 CC dually 454
2019 Honda Talon X
1985 Honda FL350R Odyssey
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10-24-2022, 09:40 PM #9
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10-26-2022, 05:46 AM #10
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I tried to hook them in parallel with controllers on them that's a no go . One shuts off saying battery full .
I just ran 2 cables to the battery works fine that way .
Your way sounds better fir sure .2019 super duty 6.7
2021 solitude 2930rl
1236 ah of Sok lithium 1200 watts of solar.
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