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  1. RV Solar Panels
  2. Go Power
  3. Roof Mounted Solar Kit
  4. 100 Watts
  5. AGM
  6. Flooded Lead Acid
  7. Gel
  8. Lithium - liFePO4
Go Power Slim Solar Charging System with PWM Solar Controller and 100 Watt Solar Panel

Go Power Slim Solar Charging System with PWM Solar Controller and 100 Watt Solar Panel

Item # GP87MR
Our Price: $443.99
You Save: $111.01
RV Solar Panels
Shipping Weight: 14 lbs
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Make the most of the usable space on your RV's roof with a slim solar panel. This charging system uses a rigid 100-watt panel and PWM solar controller to provide an extra boost to your RV batteries while you are on the road. Great Prices for the best rv solar panels from Go Power. Go Power Slim Solar Charging System with PWM Solar Controller and 100 Watt Solar Panel part number GP87MR can be ordered online at or call 1-800-940-8924 for expert service.
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Go Power RV Solar Panels - GP87MR

  • Roof Mounted Solar Kit
  • 100 Watts
  • Go Power
  • AGM
  • Flooded Lead Acid
  • Gel
  • Lithium - liFePO4
  • 5.1 - 10 Amps
  • Rigid Panels
  • 1 Panel
  • 56L x 27W Inch

Make the most of the usable space on your RV's roof with a slim solar panel. This charging system uses a rigid 100-watt panel and PWM solar controller to provide an extra boost to your RV batteries while you are on the road.


  • Solar system provides an off-grid charging solution
  • 100-Watt monocrystalline solar panel uses sunlight to charge your RV batteries
    • Made from weatherproof and impact-resistant materials to stand up to the elements
  • 30-Amp PWM solar controller adjusts solar panel output for a quick, consistent charge
    • Automatic multistage smart charging system helps extend battery life
    • Digital display monitors amperage, voltage, and battery capacity
  • Kit includes 1 solar panel, solar controller, MC4 cables, and installation hardware
    • Solar panel expansion (sold separately) increases solar power output
    • Inverter (sold separately) provides AC power to run appliances and electronics
    • Adjustable mount kit (sold separately) lets you angle the solar panel for maximum sunlight exposure


  • Application: 12V and 24V battery systems
    • Lithium, sealed, gel, and flooded lead acid batteries
  • Solar panel dimensions: 60-1/4" long x 14" wide x 1-1/2" deep
    • Weight: 14.3 lbs
  • Solar controller dimensions: 7-1/2" wide x 4-1/4" long x 1-1/4" deep
    • Weight: 0.66 lbs
  • Rated power: 100 watts
  • Amperage: 4.73 amps
  • Voltage 20.4V
  • IP rating: IP67
  • MC4 cable length: 25' each
  • Solar controller maximum input current: 30 amps
    • Maximum input voltage: 28V
  • Operating temperature range: -40 F to 185 F
  • Temperature compensation: -13mV per F
  • Maximum wire gauge: #4 AWG
  • Warranty:
    • Solar panel: 25-year limited warranty
    • Solar controller: 5-year warranty

go power solar diagram no cable entry plate

If you are an energy-conscious RV owner, the Go Power Slim solar charging system provides clean, renewable power and independence from the grid. This kit comes with everything you need to charge your RV batteries with sunlight. Using a solar panel, this system collects solar energy to create DC power that passes through a solar controller to charge your RV batteries.

How It Works

Collecting Solar Power

go power solar panel

The charging process starts with the solar panel, which installs on the roof of your RV. When solar energy interacts with the silicon cells in the panel, it generates a flow of DC electrical current that charges your RV's batteries. Each of the monocrystalline cells is made from a single crystal of silicon, so the electrons that create the current have more space to move, making this panel more efficient than one with polycrystalline cells. And in optimal sunlight conditions, the panel produces 100 watts per hour.

solar cells

The silicon cells are set between a cushioned backing material and tempered solar glass to withstand the elements. The glass has low-iron content to provide exceptional transparency, which ensures maximum sunlight collection. Finally, the panel is framed with anodized marine-grade aluminum to resist rust and corrosion.

go power adjustable arms

An adjustable mount kit (sold separately) can increase your solar panel performance by angling it for maximum sun exposure. This kit replaces the panel's existing brackets and allows it to tilt at 3 different angles. This also improves solar charging during winter months when the sun is lower in the sky.

Charging and Protecting RV Battery Bank

go power solar controller

The solar controller prevents harmful overcharging by adjusting the power generated by the solar panel before it reaches your batteries. It uses pulse width modulation technology to regulate the output through pulses that provide a consistent charge. Typically, this type of technology is a good fit for smaller systems with lower voltages.

Using a multistage charging system, the controller automatically switches voltages while the battery bank charges. This accelerates the charge, but also helps extend battery life by adjusting the voltage during the different modes. The controller is compatible with multiple battery types and includes preset charging profiles for sealed/gel, AGM, flooded/wet cell, and lithium batteries.

Charging Modes

  1. Bulk: This mode charges at the full rated load for a quicker recharge time. As the name suggests, this is where the bulk of the charging happens. It typically charges the battery to at least 80% capacity.
  2. Absorption : This mode provides controlled voltage to ensure a full charge. Once the battery reaches between 80% to 90% capacity, the absorption state will kick in and start charging at a regulated voltage. In each charging profile, this mode is set to last for 30 minutes after the bulk charge is completed.
  3. Float : Once the battery reaches full charge, this mode maintains a lower voltage to compensate for self-discharge. This reduces battery stress and minimizes gassing and water loss.
  4. Equalization : On flooded/wet cell batteries, this mode activates to prevent stratification and sulfate buildup during extended float cycles. These two issues can damage a battery by causing the accumulation of acid at the bottom of the battery and hardened sulfate crystals on the battery plates. This mode is especially helpful when your battery is going unused during storage.

With Maximum Power Boost Technology, you can simply press a button to activate Bulk mode for the highest charging voltage. This lets you quickly top off your battery bank before the end of the day by capturing as much power as possible.

solar controller terminals

This solar controller is built to charge two battery banks and has terminals for a primary and secondary battery. Your primary battery will receive the full current until it is completely charged. Then, your secondary battery will start to draw the charge current.

solar controller digital display

The backlit, digital display acts as an information center for your solar panel output. It shows the charging current, battery voltage, and battery state of charge. It also allows you to input your battery type and choose a charging profile. Additionally, a built-in USB port on the front of the controller provides a convenient outlet to charge your cell phone or tablet.

It includes a Bluetooth function that lets you connect the controller to your smartphone or tablet with the free Go Power! Connect app. With this app, you can wirelessly view the same live battery information included on the display. Also, you can control your battery profile and toggle Maximum Power Boost Technology mode.

Lastly, the controller includes several built-in safety features to help protect your equipment. The charging process will shut down if the controller starts to overheat and when an overcurrent is detected. Also, if the battery or solar panel is wired incorrectly, it activates a reverse polarity alarm.

How It Installs

overlander how it installs

The system includes a 100-watt solar panel, a 30-amp PWM solar controller, MC4 cables, and all the necessary installation hardware.

  1. Solar Panel: The solar panel installs anywhere on your RV roof with included mounting feet and hardware. To maximize sunlight collection, it is important to install the panel where it avoids shadows cast by objects, like an air conditioner or vent. The panel uses MC4 cables to connect to the solar controller. These cables can enter the RV through the refrigerator vent or using a Go Power cable entry plate (sold separately). The cable entry plate provides a covered housing and uses a quick connect setup for the MC4 cables.
  2. Solar Controller: The solar controller flush-mounts to a wall inside your RV. The manual includes a mounting template with measurements to ensure proper installation. It is wired to the solar panel using MC4 cables. Then, the battery bank is wired to the primary terminals on the controller. If you are using additional batteries, they can be connected to the secondary terminals. The included 30-amp fuse is installed between the solar controller and battery for additional current protection.

Note: This kit may require more wiring and additional parts depending on your RV setup.

83300 Go Power Slim Charging System with PWM Solar Controller - 100 Watt Solar Panel

Replaces GP-SLIM-100-KIT

Installation Details GP87MR Installation instructionsAlternate Instructions GP87MR Installation instructions

Video of Go Power Slim Solar Charging System with PWM Solar Controller and 100 Watt Solar Panel

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Go Power RV Solar Panels - Roof Mounted Solar Kit - GP87MR

Hello everybody, this is Jeff at Today, we're gonna take a look at this Go Power Slim 100 watt Solar Panel Charging System with the 30 amp PWM solar controller. Now, this is a solar charging system which will provide a nice off-grid charging solution for your 12 volt or 24 volt battery systems. It is a powerful battery charger, so it is great for maintaining the charge in all types of batteries, and it's ideal for extended RVing or dry camping. This will work with the lithium-ion, the sealed, the gel, and flooded lead acid batteries. The kit will include everything I have here on the table.

It includes this rigid 100 watt solar panel with the mounting brackets and the hardware for installation, comes with this 30 amp PWM solar controller, has an inline fuse kit, also comes with the MC4 extension cables, they're both 25 foot long, we have the black negative extension cable and the red positive, comes with other installation hardware, comes with the user's manual that'll describe how this goes together and how it operates. This is very easy to install and it is also expandable. This slim 100 watt solar kit can be expanded to increase your solar power output. We do sell a solar panel expansion kit to increase that solar power output by adding an additional panel to the system. That kit we do sell separately on our website, it's part number GP27MR, and it is listed on this product page as a related product.

The solar panel on this is a rigid black framed 100 watt monocrystalline solar panel and it uses the sunlight to charge RVs' batteries. On the very back here, you can see here's the MC4 connectors that'll plug into your extension cables to connect to your solar controller. Now, the peak power on this solar panel is 100 watts, maximum power voltage, 18.1 volts DC, maximum power current, 5.52 amps. This is a nice weatherproof and impact resistant anodized aluminum frame with tempered glass that'll stand up to the elements. Now, I did wanna talk about the flushed mount, 30 amp PWM solar controller that's included.

It is very easy to install, and it adjusts the solar panel output for a nice, quick consistent charge, has an automatic multistage smart charging system to help extend your battery life, and it has a nice digital display right here that'll monitor amperage, voltage, and battery capacity. It is also Bluetooth enabled, which means you can view and change your battery information from your smartphone or your tablet. We mentioned the cables, zoom back out here, the two cables, positive and negative, these are MC4 cables, they are extension cables, so they'll allow an extra 25 feet of distance between the panel and your solar controller. Few specs on this again, it is one solar panel, weight on that solar panel's about 14.3 pounds. The dimensions on this, overall length, one into the other is 60 1/4 inches long, the width of it, 14 inches wide, and the depth or thickness of it is 1 1/2 inches.

But that should do it for the review on this Go Power Slim 100 watts Solar Panel Charging System with the 30 amp PWM solar controller..


See what our Experts say about this Go Power RV Solar Panels

  • Narrow Solar Panel Kit For RV's With Limited Roof Space
    You will want to add the Go Power Slim Solar Charging System with PWM Solar Controller # GP87MR to your camper van. This panel is slim and designed specifically for roofs that do not have a lot of room. The panel itself is roughly 60" long and 14" wide allowing you to place it on either side of your air conditioner. We also have the Expansion Kit # GP27MR that will allow you to add up to 5 additional panels to the solar system above.
    view full answer...

Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Cody B
Updated by:
Cody B
Employee Daron K
Edited by:
Daron K
Employee Alex H
Written by:
Alex H

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