SKU: 22076908283

Genasun 54.2V 8A GVB-8 Waterproof MPPT Boost Solar Charge Controller

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Description

Genasun 54.2V 8A GVB-8 Waterproof MPPT Boost Solar Charge ControllerGenasun 54. 2V GVB 8 Waterproof MPPT Boost Solar Charge Controller The Genasun GVB 8 Li 54. 2V WP is a compact waterproof MPPT boost solar charge controller designed to charge 48V nominal, 13S lithium ion, LiPo and LiCoO battery packs from lower voltage solar panels. Instead of requiring a solar panel string with a voltage higher than the battery, the GVB 8 WP steps the panel voltage up, making it a practical choice for e bikes, golf carts, small EVs,

Genasun 54.2V GVB-8 Waterproof MPPT Boost Solar Charge Controller

The Genasun GVB-8-Li-54.2V-WP is a compact waterproof MPPT boost solar charge controller designed to charge 48V nominal, 13S lithium-ion, LiPo and LiCoO₂ battery packs from lower-voltage solar panels. Instead of requiring a solar panel string with a voltage higher than the battery, the GVB-8-WP steps the panel voltage up, making it a practical choice for e-bikes, golf carts, small EVs, marine systems, industrial DC systems and other compact solar charging applications where panel space and wiring simplicity matter.

This model is the 54.2V CC/CV lithium version. It is intended for battery packs whose charging specifications match a 54.2V constant-voltage profile. Genasun’s official documentation identifies the GVB-8-Li-54.2V-WP for 48V nominal, 13S lithium cobalt, manganese or nickel chemistry packs, with battery temperature compensation disabled for lithium operation.

Boost charging for lower-voltage solar panels

Most solar charge controllers are buck controllers, meaning they require the solar array voltage to sit above the battery charge voltage. The GVB-8-WP is different. It is a voltage-boosting controller, allowing a lower-voltage panel to charge a higher-voltage battery when the panel and battery remain within the controller’s specifications. This can help simplify small vehicle and mobile solar layouts by reducing the need to series-connect smaller panels just to reach the required battery voltage.

The controller supports a maximum recommended panel power of 350W for this 54.2V lithium model, with a rated panel input current of 8A, a recommended maximum panel Vmp of 43V and a recommended maximum panel Voc of 50V at STC. The input voltage range is 0 to 60V, with charging able to begin from a minimum panel voltage of 5V.

Why choose the waterproof GVB-8-WP?

  • True MPPT boost design: Steps up lower panel voltage to charge compatible higher-voltage battery packs.
  • 48V 13S lithium profile: Factory configured for a 54.2V CC/CV charge profile.
  • Waterproof construction: IP68 environmental protection with potted electronics for exposed mobile and marine-style installations.
  • Fast tracking: 15Hz MPPT tracking speed helps the controller respond to changing light conditions.
  • Efficient operation: 96% to 99% typical electrical efficiency for the 54.2V lithium model, with 99+% typical tracking efficiency.
  • 12 AWG flying leads: Newer GVB-8-WP units from serial number 188100 use 12 AWG tinned, pre-stripped flying leads.

Built for compact mobile solar systems

The GVB-8-WP’s sealed construction and flying-lead wiring make it well suited to applications where terminal blocks may be less desirable, including roof-mounted solar charging on golf carts, e-bikes, small EVs and marine equipment. The built-in multicolour LED provides straightforward charging, standby and error indications, while the external in-line fuse helps protect the battery connection wiring when installed as directed.

Genasun specifies no fans and no relays in its controller design, helping keep the unit compact and simple. The controller’s low night consumption of 5mA is also useful in smaller battery systems where parasitic draw matters.

Important battery and installation considerations

Because this is a lithium charge controller with a fixed 54.2V CC/CV profile, the battery pack’s charge voltage, cell count and chemistry must match the controller. Genasun also recommends using lithium batteries with a Battery Management System capable of disconnecting the solar charge controller if any cell is outside its rated temperature, current or voltage range.

For a compact, waterproof MPPT boost solution for compatible 48V 13S lithium battery systems, the Genasun GVB-8-Li-54.2V-WP provides a technically strong way to harvest solar from lower-voltage panels in mobile and off-grid DC applications.

Shipping Notes
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SKU: 22076908283

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Val
Battle Creek, US
★★★★★ 5
True to Description
Color: Black, Size: 4 Panel
Love it!! I bought it for privacy while the nurse is dressing my dad. There were several colors black matched the decor . It blocked the sunlight and street lights. Durability and quality very good. Easy closure when not in use. Lightweight. No assembly needed
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Reviewed in the United States on May 29, 2026
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Clockworks
Bozeman, US
★★★★★ 5
Nice room divider!
Color: White, Size: 8 Panel
The white panels are a nice off-white color. shipped in perfect condition. Already assembled so set up was quick. We use them to separate a photo studio from the main entry. Easily covers a 6 Ft. opening to the room. They are a woven material with wood colored sticks to support the weave. They are about 6 Ft. tall at the top of the curved section but less at the hinged sections. Light and easy to set up and take down. We are straddling two different floors so the extended legs at the bottom make this easy. Not sure how to clean them but they look great so far!
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Reviewed in the United States on October 21, 2025
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Rockermom
Lexington, US
★★★★★ 5
Instant Privacy
Color: Beige, Size: 8 Panel
Bought this to separate a ground level living area used as an office. Works well to cover visual clutter; allows a clean look when entering the front door. Comes fully assembled. Hinges are sturdy enough, as long as the panels aren’t stretched too far; have to allow some bend between them. For the price point, quality and functionality are satisfactory.
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Reviewed in the United States on August 22, 2025
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KennyDu
Massapequa, US
★★★★★ 4
Great Divider, Just Needed Anchoring for Outdoor Use
Color: Grey, Size: 6 Panel
This room divider is very nice—stylish, lightweight, and easy to set up. I’m using it outdoors, which may not be its intended use, and I found that wind can knock it over pretty easily. Once I anchored it down, though, it worked just fine and looks great in the space. Indoors, I imagine it would be perfect right out of the box. Overall, a solid purchase with just one small adjustment needed for my setup.
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Reviewed in the United States on May 2, 2025
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Lorene
Lexington, US
★★★★★ 5
Good Quality
Color: White, Size: 4 Panel
They are made with good quality. However I bought them to help with blocking outside light and the white does not do that.
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Reviewed in the United States on May 26, 2026

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