Genasun 8A MPPT 24V Voltage Boost (28.4V Lithium) Solar Charge Controller
SKU: 85770049797

Genasun 8A MPPT 24V Voltage Boost (28.4V Lithium) Solar Charge Controller

Sale price$126.00 Regular price$140.00
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Description

Genasun 8A MPPT 24V Voltage Boost (28.4V Lithium) Solar Charge ControllerGenasun GVB 8 Li 28. 4V: 8A MPPT Boost Solar Charge Controller for 24V Lithium Batteries Advanced MPPT Boost Technology for Efficient 24V Lithium Charging from Lower Voltage Panels The Genasun GVB 8 Li 28. 4V is a high performance MPPT boost solar charge controller engineered to charge 24V lithium battery banks from solar panels with a lower voltage output. Unlike conventional controllers that step down voltage, this unit employs a sophisticated boost

Genasun GVB-8-Li-28.4V: 8A MPPT Boost Solar Charge Controller for 24V Lithium Batteries

Advanced MPPT Boost Technology for Efficient 24V Lithium Charging from Lower Voltage Panels

The Genasun GVB-8-Li-28.4V is a high-performance MPPT boost solar charge controller engineered to charge 24V lithium battery banks from solar panels with a lower voltage output. Unlike conventional controllers that step down voltage, this unit employs a sophisticated boost topology to elevate panel voltage, enabling the use of larger, more cost-effective panels. This approach reduces overall system cost while maximising energy harvest in space-constrained installations such as caravans, marine vessels, and remote off-grid sites.

Designed for mission-critical reliability, Genasun controllers are trusted in the world's most demanding environments—from Antarctic research stations to high-altitude solar aircraft. Each unit is manufactured in the USA and undergoes comprehensive electrical testing to ensure dependable operation when it matters most.

High-Speed MPPT: 15Hz Tracking for Dynamic Conditions

Standard MPPT controllers often use a slow "sweep and sleep" algorithm, scanning the panel's power curve every 30–60 seconds. This is adequate for stationary panels under clear skies but falls short in mobile or variable weather scenarios. The Genasun GVB-8 features a 15Hz MPPT tracking speed, adjusting to changing irradiance 15 times per second. This rapid response captures more energy during cloud transients, shading, and when panels are mounted on moving vehicles, delivering up to 99%+ tracking efficiency.

Optimised for 24V Lithium Systems

Pre-configured for 24V lithium iron phosphate (LiFePO4) batteries with a constant voltage of 28.4V, this controller implements a precise CC-CV (Constant Current – Constant Voltage) charge profile. The advanced computer-controlled algorithm ensures safe, full charges that extend battery lifespan and maintain capacity. With an electrical efficiency of 96–98% typical, minimal energy is lost during conversion, maximising the power delivered to your battery.

Built for Harsh Environments

The GVB-8 is fully encapsulated in a rugged, waterproof housing, making it suitable for marine, coastal, and high-humidity installations. It operates reliably across a wide temperature range and includes essential protections against over-current, over-temperature, and reverse polarity. The fanless, potted design eliminates moving parts that can fail, ensuring silent, maintenance-free operation for years.

  • Boost MPPT topology charges 24V batteries from panels with Vmp as low as 5V
  • 15Hz high-speed tracking adapts to changing light in milliseconds
  • Waterproof, potted enclosure resists moisture, salt spray, and vibration
  • Pre-set for 24V lithium with 28.4V CV and CC-CV charging profile
  • 96–98% typical efficiency reduces thermal stress and energy loss
  • Low night consumption of just 6mA preserves battery charge
  • Wide panel compatibility supports up to 350W with 8A input current

Cost-Effective System Design

By allowing a single large panel to charge a higher voltage battery, the boost controller eliminates the need for multiple smaller panels wired in series. Larger panels typically have a lower cost per watt, so this approach can significantly reduce your total system expenditure while simplifying wiring and mounting. The GVB-8 accepts a maximum panel power of 350W (with ~155mm cells) and an absolute maximum Voc of 63V, providing flexibility in panel selection.

Applications

Ideal for caravan solar systems, marine battery charging, remote telemetry, and any off-grid installation where panel voltage is lower than battery voltage. Its compact, lightweight design and waterproof construction make it particularly suited to mobile and exposed environments.

Upgrade Your Off-Grid Power System

Equip your installation with the Genasun GVB-8-Li-28.4V MPPT boost controller for reliable, efficient charging in the toughest conditions. Order today and experience the difference that high-speed MPPT and rugged engineering can make in your energy system.

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: 85770049797

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Amazon Customer
Lowell, US
★★★★★ 5
Great Product
Size: Upgrade - For Model Y Juniper/Model Y/Model 3
Easy to install and clever was to mount your phone to the side of the center screen. Easy to install and no issues holding the phone in place.
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Reviewed in the United States on January 4, 2026
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Marikah Baran
Houston, US
★★★★★ 5
Fantastic Product & Even Better Customer Service!
Fantastic Product & Even Better Customer Service! I don’t usually write reviews, but I had to take a moment to rave about this phone mount. Not only is the product itself sturdy, reliable, and exactly what I needed—it exceeded my expectations in terms of quality and functionality—but what really stood out was the incredible customer service. When I had a small issue, the team responded quickly, professionally, and went above and beyond to make sure everything was resolved. It’s rare to find a company that truly stands behind its product and values its customers like this one does. I would highly recommend this phone mount to anyone looking for a dependable solution—and if you ever do need support, you’ll be in great hands. Five stars all the way! 👏📱
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Reviewed in the United States on May 29, 2025
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Customonial
Belleville, US
★★★★★ 5
Just what I needed
Size: Upgrade - For Model Y Juniper/Model Y/Model 3
Very secure grip of the phone. Puts the phone in a perfect spot to keep your eyes on the road. You won't miss any emergency notifications!
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Reviewed in the United States on April 21, 2026
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Marco Caccamo
Port Orchard, US
★★★★★ 5
Perfect accessory for your Tesla
Size: Upgrade - For Model Y Juniper/Model Y/Model 3
Great addition to your Tesla!
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Reviewed in the United States on February 25, 2026
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AliciaP1821
Belleville, US
★★★★★ 5
Perfect Fit for My Tesla!
Size: Upgrade - For Model Y Juniper/Model Y/Model 3
I’ve tried a few phone mounts for my Tesla, but this one stands out. It attaches securely without any wobbling, and the magnet is strong enough to hold my phone even on bumpy roads. The sleek design blends in well with the car’s interior, making it look like it was built for it. Installation was super easy—took just a few seconds. The charging feature works great too, so I don’t have to fumble with cables while driving. If you’re looking for a reliable, stylish phone mount for your Tesla, this one is definitely worth it!
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Reviewed in the United States on March 12, 2025

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