GVB-8-WP (Boost) Waterproof

8A Voltage-Boosting Waterproof MPPT Solar Charge Controller

Starting at $149

  • Made in USA
  • Voltage-boosting (Step-up)
  • Options for 12V, 24V, 36V, 48V lead-acid, LiFePO₄, and lithium-ion
  • 99% Peak efficiency
  • High-speed MPPT
  • Advanced electronic protections
  • Tiny self-consumption (5-7mA)
  • IP68 (Waterproof)
  • 5 Year Warranty
  • CE, FCC, and RoHS compliant
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Voltage-Boost: A True Problem-Solver

Most solar charge controllers move power from a higher-voltage panel to a lower-voltage battery bank. The GVB-series controllers, in contrast, pump electricity up hill. These controllers will take a lower-voltage panel and boost the voltage to charge a 24V, 36V or 48V battery pack. In fact, the GVB’s will work with almost any panel that’s below your battery voltage. Because these controllers feature true MPPT, no configuration is necessary; the controller will automatically adapt to your panel. Want to charge a 24V battery with a 60-cell (18V) solar panel? No problem. A 48V battery from a 12V panel? We’ve got you covered. And our 12V boost controller will charge 12V batteries from specialty low-voltage panels.

Waterproof Construction for Golf Carts and Small EVs

Rain pours down.  Vehicles need to be washed.  A proprietary potting compound protects the advanced electronics inside the GVB-8-WP controller, making it ideal for golf carts, marine applications, e-bikes, small EVs and other applications where the controller will be exposed to moisture.

Run Circles around the Competition, on Solar

Make the most of the space on your golf cart.  With a panel on your roof and a Genasun GVB-8-WP, your first 10 miles per day could be free.  In fact, some of our customers never have to plug in their carts.  Even if you do, the continuous charge delivered by the GVB will extend range and keep your batteries at a higher state of charge, helping them last longer.

Boost Panel Voltage to Save Money and Simplify Installation

Larger panels are cheaper per Watt than smaller panels, so using one large panel and a GVB-8-WP results in a lower system cost than using smaller panels in series and also allows simpler wiring and installation.  So stop stringing small 12V panels in series to charge at 24V or 48V, and reap the rewards of the GVB-8-WP’s boost technology.  

Boost System Reliability with the GVB-8

Genasun controllers are deployed to the most remote locations on earth. They endure years at sea, harsh Antarctic winters, freezing conditions in the upper atmosphere on solar powered airplanes, and in a few off-the-map locations. Made in the USA, each controller is put through complete electrical testing to ensure reliability. In addition, Genasun’s GVB-8-WP boosts system reliability by allowing the use of lower-voltage solar panels.  Compared to a higher-voltage panel, these have fewer cells, fewer interconnections to go bad, and larger cell area to defend against partial shading, all resulting in a more robust system.

Tailored Lithium Charging Profiles Available

Our Lithium charging algorithms draw from a decade of experience building lithium battery packs for harsh environments. We’ve worked with every chemistry and have tailored charge profiles to help you get more capacity and cycle life from your battery pack.

Custom Voltages Available

Genasun stocks the GVB-8-WP for lead-acid batteries and for a variety of Lithium chemistries and cell configurations. If these standard configurations don’t work for your OEM application, a custom charge profile can be programmed at the factory to match the specs of your lead-acid or Li battery. To order a Custom Voltage waterproof controller, please contact us.  Due to the potting process, minimum quantities apply.  If you would like to order a GVB-8 boost controller customized for your batteries with no minimum quantity, please have a look at out non-waterproof GVB-8 series of controllers.

Compact, Terminal-Block Versions Available

For applications that won’t be exposed to water or moisture, check out our compact and lower-cost GVB-8 series of controllers.

High-Speed MPPT: Always on Target

Not all Maximum Power Point Tracking controllers were created equal. Most use a “sweep and sleep” method that scans every 30-60 seconds. That’s okay for a clear day, but traditional controllers are constantly off target when used on vehicles or in changing cloud conditions – exactly when power is scarce and is needed the most. Genasun controllers adapt to changing light conditions 15 times every second. They are always on target, capturing every bit of available sunshine. Simply put, other controllers can’t keep up.

Wide Power Band

Efficiency matters.  Many controllers are designed simply to not burn up at high power levels, sacrificing efficiency in low light.  At Genasun, we understand that a watt-hour collected during bad weather is worth even more than a watt-hour collected on a sunny day.  We tuned our power conversion circuitry to maintain high efficiency over the full range of power levels.  Whereas other controllers may charge with efficiencies as low as 80% or worse in low light, the GVB-8 maintains greater than 95% efficiency while operating at only 10% of its rated input (94% for 12V models).  When other controllers have given up and are draining your battery, the GVB-8 will still be charging.

LED Indicator

The built-in LED will quickly tell you that you’ve installed the controller correctly. Simple to read, it will also let you know when the battery is charging from solar power, and when the battery has reached full charge.

Partial Shade Punch

Genasun controllers shine in partial shade. The 50% power increase from Genasun’s advanced MPPT is often enough to prevent system downtime from partial shade. From antennas and sailboat rigging, to street signs and tree branches, to coffee cups and stickers placed on panels by pedestrians, Genasun MPPT keeps partially shaded solar panels generating more power than any other controller.

No Fans. No Relays.

Fans get clogged with dust and dirt. Relays eventually stop switching. Genasun controllers use advanced electrical design that obsoletes these parts. With no moving parts to wear out, Genasun controllers outlast the competition.

Available in Bulk for OEM Applications

While the GVB-8-WP ships in individual packaging by default, we can also ship in bulk packs of 20 for OEM volume applications.  Bulk packs minimize packaging waste, labor, and shelf space requirements. Please contact us for more information.

All SKUs
GVB-8-Pb-12V-WP
GVB-8-Pb-24V-WP
GVB-8-Pb-36V-WP
GVB-8-Pb-48V-WP

1: Panel ratings have increased since we designed the GVB-8-WP. Although we don't believe in changing specifications without a corresponding engineering change, based on both our customers' experiences over the years as well as the headroom we designed into the GVB-8-WP, we feel comfortable recommending the GVB-8-WP for panels with Imp up to 9 A.
2: Panel Isc. Max input power and maximum input voltage requirements must also be respected.
3: Max current that the controller could draw from an unlimited source. This specification is not intended for determining PV input.
4: Max ambient temperature for full operating power.
5: If the battery voltage drops below this point, the controller will attempt to run an absorption cycle. Otherwise, it will charge to the float voltage.

All SKUs
GVB-8-Li-14.2V-WP
GVB-8-Li-28.4V-WP
GVB-8-Li-41.7V-WP
GVB-8-Li-42.6V
GVB-8-Li-50V-WP
GVB-8-Li-54.2V-WP
GVB-8-Li-56.8V-WP
GVB-8-Li-58.4V-WP

1: Panel ratings have increased since we designed the GVB-8-WP. Although we don't believe in changing specifications without a corresponding engineering change, based on both our customers' experiences over the years as well as the headroom we designed into the GVB-8-WP, we feel comfortable recommending the GVB-8-WP for panels with Imp up to 9 A.
2: Panel Isc. Max input power and maximum input voltage requirements must also be respected.
3: Max current that the controller could draw from an unlimited source. This specification is not intended for determining PV input.
4: Max ambient temperature for full operating power

GVB-8/GVB-8-WP Overview

Lead-Acid
SKU Description Price Quantity
GVB-8-Pb-12V-WP-RETAIL

For 12V lead-acid batteries

$149
GVB-8-Pb-24V-WP-RETAIL

For 24V lead-acid batteries

$169
GVB-8-Pb-36V-WP-RETAIL

For 36V lead-acid batteries

$180
GVB-8-Pb-48V-WP-RETAIL

For 48V lead-acid batteries

$180
LiFePo4
SKU Description Price Quantity
GVB-8-Li-14.2V-WP-RETAIL

For 12V (4S) LiFePO4 batteries

$159
GVB-8-Li-28.4V-WP-RETAIL

For 24V (8S) LiFePO4 batteries

$205
GVB-8-Li-42.6V-WP-RETAIL

For 36.0V (12S) LiFePO4 batteries

$205
GVB-8-Li-56.8V-WP-RETAIL

For 48V (16S) LiFePO4 batteries

$205
Li-ion LiPo/LiCoO2
SKU Description Price Quantity
GVB-8-Li-41.7V-WP-RETAIL

For 37.0V (10S) Li-ion LiPo/LiCoO2 batteries

$205
GVB-8-Li-50.0V-WP-RETAIL

For 44.4V (12S) Li-ion LiPo/LiCoO2 batteries

$205
GVB-8-Li-54.2V-WP-RETAIL

For 48.1V (13S) Li-ion LiPo/LiCoO2 batteries

$205
GVB-8-Li-58.4V-WP-RETAIL

For 51.8V (14S) Li-ion LiPo/LiCoO2 batteries

$205

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