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Community and Q&A

Adding Solar to Sprinter RV

AlexDomain404 | Posted in General Questions on

The coach (WB Navion) is equipped with: (2 * 100) Zamp panels on a 30A PWM Controller, (2 * 125 Ah,) Lithium Batteries. and a Zantrex 2KW Inverter/Charger.

So here’s my plan:

1) Connect the (2 *100) Zamp panels in Series and feed them to a Victron MPPT 100/20 Controller.

2) Add (2 * 210) Newpowa panels (Voc=39.6V, Imp=6.24A) and feed them to a Victron MPPT 100/50 Controller.

Did not want to mix panels, so opted for separate Controllers… Please ignore the “extra” stuff: Lynx Distributor, Smart-Shunt, Cerbo GX, and GX Display/Touch.

Question: Is 620W of Solar overkill for this system?


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  1. drewintoledo | | #1

    In my opinion, the amount of solar required is proportional to your electrical usage and location. Do you make a lot of toast on sunny days? You’d get away with less solar in Florida than you would Seattle where it’s cloudy over 80% of the year.

  2. ozon8r | | #2

    I own a 2020 Navion 24J and just purchased two 210w NewPowa solar panels. I removed the OEM lead acid batteries and replaced with two 105ah Lion Energy batteries some time ago. I am interested to hear how your install went. I have not received the new panels yet but planning to install in parallel and run the two existing 100w panels in series netting out to three lines going into the Zamp roof 3 port then down to the Zamp 30a PWM solar controller which I plan to replace with a Victron MPPT 150/85 at some point. Best

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