Genasun 8A MPPT 24V Voltage Boost (28.4V Lithium) Solar Charge Controller
SKU: 85176709390

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:
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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]
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SKU: 85176709390

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Makayla
Phoenix, US
★★★★★ 5
Great for toddler eczema
Such a nice on-the-go option! We leave this in the car for quick application when my daughter’s eczema on her ankles starts acting up (she’s 2 and will scratch it while in her car seat). It helps almost instantly to minimize irritation. The consistency is smooth, doesn’t melt in the warmth, absorbs fast, and has a neutral smell. Very happy with this product and will buy more when we run out!
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Reviewed in the United States on June 7, 2026
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HaileyRae
Louisville, US
★★★★★ 5
It's a YES. Love this stuff.
I usually don't write reviews but... this stuff is amazing for me. I don't have eczema but I needed a face lotion that didn't break me out since Iv'e been having problems with acne lately. I used this awhile ago and tried other products but nothing worked like this. It is so gentle on my face and also IT REMOVES EYE MAKEUP, which is a real game changer for me since even showering cannot take off my mascara at times. But this just swipes it away completely as well as moisturizes which is perfect. Skin feels soft and no irritations, it also lasts forever but keep it out of the heat because it will melt if it gets too hot. It is similar to stick sunscreens IMO and has a bit of a gritty texture at times but it is not abrasive and goes on smoothly. Smells like lavender but is not too overpowering of a smell. The ingredients are really clean too which is hard to find nowadays. For this price, I will be coming back from now on. This is a winner for me!
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Reviewed in the United States on August 7, 2025
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Amazon Customer
Whiting, US
★★★★★ 3
smells like lavender, but otherwise good
smells intensely of lavender, which I do *not* enjoy. it's not added just as a perfume, so they're claiming it's unscented, but the lavender smell will definitely follow you around. texture is a little sandy and crumbly (think like a Burt's Bees chapstick texture instead of a smooth Chapstick brand one), which I actually like, it feels like it really applies well instead of just gliding on top of the skin. smooth once it's on the skin, transfers and wipes off easily but that's expected of a balm, and it's easy to reapply. definitely a good size for the price, but the stick is so big that it's actually a little unwieldy to apply on eczema around the hands or face. it works moderately well for my eczema patches, but honestly the lavender smell is so strong and off putting to me that I'll probably give it away anyways.
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Reviewed in the United States on November 22, 2025
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criscostick
Birmingham, US
★★★★★ 5
Perfect for dry, sensitive skin
I have extremely sensitive, dry skin. I also hate the feeling of oily lotion on my hands. I love using this stick so I don’t have to get the lotion on my hands and it hasn’t irritated my skin at all. It is extremely thick and sometimes hard to spread on without it being clumpy, but that’s not an issue for me.
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Reviewed in the United States on May 11, 2026
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CoreyTheFro
Fort Morgan, US
★★★★★ 5
In most of all circumstances, this works
Style: SPF 50, Size: 6 Fl Oz (Pack of 2)
For Summer time and when playing and working in the sun, this is my go to sunscreen! I love how it is more natural than all the other ones out there. I have been sort of a spray on sunscreen connoisseur and this is the one that is my favorite. Also, if I have gotten a burn and put this on it, I believe it helps start the healing process on the burn I got. This is at least what I experienced multiple times last year. The only circumstance that this sunscreen fails miserably is in the Caribbean. I recently went on a cruise to that region and applied this sunscreen and it became evident that this and the other brands of spray on sunscreen do not work in Caribbean sun. The only sunscreen that works is the lotion based stuff that you rub into your skin. I have also consulted with friends on spray on sunscreen in the Caribbean and they all fail as well. So, this is why I say that it works in almost every circumstance.
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Reviewed in the United States on May 1, 2023

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