SKU: 30626363816

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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Exchange/Return Notes
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SKU: 30626363816

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JusKolMeAl
West Palm Beach, US
★★★★★ 5
Saved a few bucks for top quality!
I’m not a visual artist by any stretch, but I also hate not having every option at my disposal, so I bought this item used on here. The best $70 bucks I’ve ever saved. It didn’t come in an Apple box but it came in an Amazon box that was the size of an Apple box and it was padded and secure. The quality was as new as it would be coming from the Apple Store. It’s a pretty good device. It works well. I enjoy using it to make slight adjustments in my attempts to draw things and I do enjoy writing with it. Great weight and the haptics are on point when you use the options like squeezing it to change tools. It fits nicely on the top of the iPad with the magnet. Battery life has yet to drop below 95 even when I had it off the pad for a few days. I’m very happy with my purchase and I love the fact that I saved a few bucks by purchasing used.
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Reviewed in the United States on March 24, 2026
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Tammy
Port Orchard, US
★★★★★ 5
Excellent Apple Pencil but make sure it works with the iPad you currently own!
I love the new pencil! The haptics in it are great! I originally had the 2nd gen pencil and needed a new one so I bought this one. When I got it, it wouldn’t sync to my iPad Pro 11 (4th gen) though. Apparently I didn’t read completely that it wouldn’t. However, because of this, my husband bought me the new iPad Pro (M5 chip) and the pencil works great with it! It syncs easily with the iPad and is easy to use.
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Reviewed in the United States on April 29, 2026
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Geraltz08
Omaha, US
★★★★★ 5
Like new! Great deal and works perfectly
Looks and works like brand new! The magnetic charging is solid, and the response time is flawless. The pressure sensitivity and barrel roll features are game-changers for drawing. It was well-packaged and arrived super fast. Getting a Pencil Pro at this price is a steal—saved a lot compared to buying new. Definitely a great find!
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Reviewed in the United States on April 25, 2026
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takosushi
Lake Worth, US
★★★★★ 5
Apple Pencil Pro… definitely an upgrade from the original Pencil and Pencil 2!
Purchased as an open‑box, like‑new item, and it arrived exactly as described. The box was opened but taped closed and the wrapper was still on the pencil. It didn’t have any charge out of the box, but as soon as I snapped it onto the side of my iPad, it synced instantly and worked right away. I charged it fully that first night and have been using it normally ever since. I’m using it with my 13” iPad Air M2, and it’s great. The double‑tap on the barrel to bring up the menu is super convenient, and everything works flawlessly. Zero issues so far. For basically half the price of a brand‑new one, this feels like an excellent buy and absolutely worth what I paid. Apple hardware is built well, the white looks nice and clean… I have no worries about longevity at all. Excellent product from Apple as usual.
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Reviewed in the United States on May 4, 2026
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James
West Palm Beach, US
★★★★★ 5
Super easy to set up and start drawing
I was honestly shocked at how easy it was to connect it to my iPad. Opened the box and was expecting to see more inside of it, decided to see what happens when I put it up to my iPad and it connected instantly. Works great with my iPad m2 with touch sensitivity and spiral twist stuff in procreate. Really happy to not have to plug it in to charge. I’m planning to use this daily, so I needed to make sure it would actually feel good to hold in my hand and oh baby let me tell you, it does. It’s really smooth drawing wise, using it is intuitive. Fits on the iPad snug. I’d say give it a shot
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Reviewed in the United States on April 3, 2026

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