Can I Add 2 More 200 Watt Solar Panels to My Go Power MPPT Solar Charge Controller?

Updated 11/25/2025 | Published 11/15/2025

Question:

I have this controller. 1 Go Power 200W overlander panel on the roof. Can I add 2 more 200W panels? What is the max number of panels I can add. Thanks

asked by: Steve S

Expert Reply:

Hello Steve,

Good news! Your Go Power! 30-amp MPPT controller # GP72RR can handle up to 600 watts on a 12-volt system, so adding two more 200-watt panels like # 34282182 to your existing one is perfect. That puts you right at the controller’s safe limit. Just make sure the combined voltage of your panels doesn’t exceed 100 volts, especially if you wire them in series. Wiring them in parallel is usually the safer choice for RV setups since it keeps the voltage the same.

This controller also works great with lithium batteries, so you’re all set for your future upgrade. Just double-check your panel specs and fusing to make sure everything’s rated for the extra current. In short, yes, you can absolutely add those two panels! You’ll max out your controller safely and get the most from your solar system.

What kind of camper is this going on? Any awesome adventures this year, or better yet, what has been your all time favorite trip? Where did you go, what did you see?

expert reply by: Kate F

Parts Included with Solar Panel
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Steve S.

11/24/2025

I have a 2025 Jayco 5th wheel. With the Go Power Overlander system. 1, 200w panel, MPPT controller. Can I add 1-2 Rich Solar 200w panel’s to this? Or do I have to stay with Go Power panels? Thanks

Kate F.

11/25/2025

@SteveS Since you have the Go Power MPPT Solar Charge Controller - 30 Amp - 12V and 24V # GP72RR, if you are running it on a 12V system you can have up to 600 watts of solar, if you are running it under a 24V system you can have up to 1200 watts of solar. You mentioned that you have (1) 200 watt panel, you are safe to add (2) of the Rich Solar Mega 200 Solar Panel # RS23FR. What kind of camper is this going on? Were you able to get much use out camping with just the 1 panel?