SKU: 30327810186

Genasun 8A MPPT Custom Voltage Boost (Lithium) Solar Charge Controller

Sale price$142.77 Regular price$158.63
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Description

Genasun 8A MPPT Custom Voltage Boost (Lithium) Solar Charge ControllerGenasun GVB 8 Custom Voltage Boost MPPT Solar Charge Controller for Lithium Batteries Advanced MPPT Boost Technology for Off Grid and Mobile Energy Systems The Genasun GVB 8 Custom Voltage Boost MPPT Solar Charge Controller is engineered for applications where the solar panel voltage is lower than the battery voltage. Unlike conventional controllers that step down voltage, this unit efficiently boosts power from a lower voltage panel to charge a

Genasun GVB-8 Custom Voltage Boost MPPT Solar Charge Controller for Lithium Batteries

Advanced MPPT Boost Technology for Off-Grid and Mobile Energy Systems

The Genasun GVB-8 Custom Voltage Boost MPPT Solar Charge Controller is engineered for applications where the solar panel voltage is lower than the battery voltage. Unlike conventional controllers that step down voltage, this unit efficiently boosts power from a lower-voltage panel to charge a higher-voltage lithium battery pack. This capability allows the use of larger, more cost-effective panels, reducing overall system expense while maintaining high performance.

Designed and manufactured in the USA, the GVB-8 is built for mission-critical reliability. It has been proven in the world’s most demanding environments—from years at sea to harsh Antarctic winters and high-altitude solar-powered aircraft. Each controller undergoes comprehensive electrical testing to ensure dependable operation when it matters most.

High-Speed MPPT: 15 Hz Tracking for Dynamic Conditions

Not all MPPT controllers are equal. Many use a slow sweep-and-sleep method, scanning the voltage range every 30 to 60 seconds. This approach is adequate for stationary panels under clear skies but falls short in mobile or variable conditions. The Genasun GVB-8 features a 15 Hz MPPT tracking speed, adapting to changing light 15 times per second. This ensures maximum energy harvest during cloud transients, on moving vehicles, and in partial shading—capturing power that slower controllers miss.

Precision Charging for Lithium Batteries

The GVB-8 employs a computer-controlled constant-current/constant-voltage (CC/CV) charge profile tailored for lithium batteries. This precise regulation optimises charge cycles, extends battery lifespan, and maximises usable capacity. The custom voltage output is factory-set to your specified level, ensuring a perfect match for your lithium battery bank.

Key Features

  • Boost topology enables charging from panels with voltage below the battery
  • 8 A rated panel input current supports panels up to 150 W (with ~155 mm cells)
  • 15 Hz MPPT tracking for superior performance in dynamic light
  • 95–99% typical electrical efficiency minimises energy loss
  • 99%+ tracking efficiency ensures near-perfect power point accuracy
  • Wide 5 V minimum panel voltage for flexible panel selection
  • Low night consumption (as low as 5 mA) preserves battery charge
  • Compact, lightweight design (14 x 6.5 x 3.5 cm) for easy integration
  • IP40 environmental protection suitable for protected installations
  • Made in the USA with full electrical testing for reliability

Durable and Reliable Construction

Housed in a robust black enclosure with integrated mounting flanges, the GVB-8 is designed for secure installation in a wide range of applications. Multicolour LED indicators provide clear status feedback for Standby, Charging, Full, and Error states, simplifying system monitoring and troubleshooting. Screw terminals accept up to 4 mm² (approx. 12 AWG) wiring for secure, low-resistance connections.

Versatile Applications

The Genasun GVB-8 is ideal for off-grid and mobile systems where panel voltage constraints exist. Typical uses include:

  • Charging 12 V lithium batteries from lower-voltage solar panels
  • Marine and RV installations with limited panel space
  • Remote monitoring and telemetry systems
  • Portable solar generators and field equipment
  • Custom voltage requirements for specialised lithium packs

With its advanced boost MPPT technology and proven durability, the Genasun GVB-8 delivers efficient, reliable charging in the most challenging conditions. Whether you’re powering a remote sensor, a marine electronics suite, or a mobile workstation, this controller ensures your lithium batteries receive optimal charge from every available watt of solar energy.

Power Your System with Confidence

Choose the Genasun GVB-8 Custom Voltage Boost MPPT Solar Charge Controller for your next project and experience the difference that high-speed tracking and precision charging make. Order today to keep your lithium batteries performing at their best, wherever your installation takes you.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 30327810186

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4.1 ★★★★★
Based on 18 reviews
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Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 5
All-around thumbs up!
Size: 934W-Z, Color: Black
So far, so awesome. Easy to assemble, comfortable, arrived quickly and is exactly what I was looking for. I have a tall work bench in my new studio so I needed a chair that we could allow me to sit higher than a regular office chair and allow me to get off my feet after standing on the concrete floor. Plus its a nice looking chair that I am sure will last a long time. I love the flip-up arms and the lumbar support. This is just right!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
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Verified Purchase
Danielle Chen
Lake Worth, US
★★★★★ 5
Perfect Balance of Comfort, Support, and Style!
Size: 934-Z, Color: Black, Size: 934-Z, Color: Black
I’ve been using this chair for a few weeks now, and I’m genuinely impressed with how much of a difference it’s made in my workspace. The mesh back is one of my favorite features—it offers excellent breathability and prevents that sticky, overheated feeling you sometimes get with solid-back chairs, even after sitting for hours. The seat cushion is firm enough to give proper support but still has enough give to keep me comfortable through long workdays. It feels like the perfect middle ground between soft and supportive. The adjustable foot ring has been a complete game changer for me. I use a taller desk setup, and having somewhere to rest my feet makes a huge difference in posture and overall comfort. Whether I’m sitting upright for focused work or leaning back to read, it’s always at the right height. The flip-up armrests are another smart design choice. When I’m typing, I like to have them down for support, but when I’m done, I can flip them up and push the chair neatly under my desk—saving space and keeping things tidy. The casters roll smoothly on both hardwood and rugs, so I can move around easily without scraping the floor or getting stuck. The overall build quality feels solid and sturdy, with no wobbles or creaks. Assembly was surprisingly quick—everything was clearly labeled, the parts felt durable, and it only took me about 20 minutes from opening the box to sitting in the chair. The sleek, modern look is another big plus—it blends in perfectly with my home office décor without feeling bulky or taking up too much visual space. If you’re looking for a chair that combines comfort, ergonomic support, durability, and style, I can’t recommend this one enough. It’s equally great for work, studying, or just relaxing at your desk, and it’s definitely been worth every penny.
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Reviewed in the United States on August 12, 2025
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Verified Purchase
sleepywan
Grantham, US
★★★★★ 3
OK for the price, but overall comfort is avergae
Size: 934-Z, Color: Mustard
Easy to put together, color (mustard) accurate to images, and while I understand this is not a high-end chair, I feel like it still needs to be rated for its quality. Pros: the seat cushions are fairly comfortable and it rolls well. Adjustable footrest is easy enough and mostly sturdy. Cons: For a tall office chair, it doesn't go up high enough. I actually had to lower my standing desk to sit at it, which then isn't where I want it when I'm standing now. It's also a bit wobbly. The seat area's attachment to the post isn't as solid as it should be for a tall chair, so while sitting, it does tend to lean/slope forward and wobble side to side. The lumbar support is not adjustable, so I'm not even really sure what it does. And the armrests are not very comfortable to use. Since they are hard plastic, they are just a bit too rigid to rely on for any comfort. They are basically there to hold on to when you're getting out of the chair.
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Reviewed in the United States on May 29, 2026
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Verified Purchase
Mel
Los Angeles, US
★★★★★ 4
Good Value for a Tall Chair
Size: 934W-Z, Color: White
I have received this chair just today and would like to give my first impressions of it. Height is super adjustable as well as the foot rest. My desk is very tall (~34 inches vs standard ~29 inches) and does not suit a standard height chair. This chair's height is enough to sit comfortably at mybut also still having adjustment to be even higher. Lumbar support is a manual adjustment that can be adjusted by sliding the lumbar piece up or down and it seems it can be tiled as well. No reclining feature or slight backrest tilt adjustment. I'm used to my chairs reclining so it feels a little awkward siting in a flat base and straight backrest. I feel like I'm sitting too forward or leaning forward slightly but is probably something I can get use to. Easy to put together and feels very sturdy. Plastic parts of chair are made from a really sturdy plastic, like playhouse plastic materials. Wheels roll around carpet easily. Mesh seems to be a strong material, though the mesh feels kind itchy on bare skin. Overall, I think this is a good chair to get if you're needing a tall chair for a good value and can sacrifice no backrest tilt.
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Reviewed in the United States on December 3, 2025
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Verified Purchase
Tram
Battle Creek, US
★★★★★ 5
Excellent value for money!
Size: 934W-Z, Color: Black, Size: 934W-Z, Color: Black
I absolutely love this office chair! I needed a chair that could support my standing desk without sacrificing comfort, and this one completely exceeded my expectations. It's incredibly sturdy and durable, well-made, and the height adjustment is super convenient, making it easy to find the perfect fit. Even during long hours of work, the seat is comfortable, and the ergonomic design effectively reduces pressure on my back and legs. I love its clean, modern look—it fits my home office perfectly. Assembly was quick and easy, and for this price, the quality is absolutely fantastic!
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Reviewed in the United States on February 24, 2026

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