8A MPPT 12V BOOST WATERPROOF for Lead-Acid Genasun Solar Charge Controller

up to 105W. Made in USA. 5 year warranty. IP68

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Charge a 12V battery from a small solar panel


Genasun GV-Boost 105-350W Boost Charge Controller with MPPT - Waterproof

Fully potted.  IP68 rated.

These solar charge controllers are fully waterproof, which makes them ideal for golf carts and other applications where the controller will be exposed to moisture. 

If you have a limited amount of space, for example a golf cart, the advanced electronics in the GVB controller extract more usable power from your panel than any other controller.


Boosting Panel Voltage Saves Money

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 solar charge controllers will take almost any solar panel and boost the voltage to charge a 36V or 48V battery pack.

Because these controllers feature true MPPT, no configuration is necessary; the controller will automatically adapt to your panel.

Larger panels are cheaper per Watt than smaller panels, so using one large panel and a boost controller results in a significantly lower system cost than smaller panels in series with a conventional charge controller, not to mention simpler wiring and installation.

Unmatched Reliability

Genasun controllers are deployed to the most remote locations on earth. They continue delivering power after years at sea, through harsh Antarctic winters, in the upper atmosphere on solar powered airplanes, and in a few off-the-map locations.

Each controller we ship has passed a thorough electrical test to ensure reliability. If you need mission-critical power, this is your controller.

High-Speed MPPT: Always on Target

Not all Maximum Power Point Tracking controllers were created equally. Most use a sweep and sleep method that scans the entire voltage range every 30-60 seconds. That's okay for a clear day, with a stationary panel.  Moving vehicles, and changing cloud cover requires a faster, more advanced controller.  Genasun controllers adapt to changing light conditions 15 times every second. They are always on target, capturing every bit of available sunshine.

Computer Controlled, Temperature-Compensated 3-Stage Battery Charging

Precise computer controlled charging ensures the optimal charge cycle for your battery. This increases the battery life, and maximizes battery capacity.

Made in the USA



  • 99% Peak Efficiency
  • Continuous MPPT
  • Marine-Grade
  • Advanced electronic protections
  • 5-Year Warranty.

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.

Marine Grade: Reliable Power After Years at Sea
Genasun Boost controllers provide reliable power in the harshest environments on earth. GVB's have been powering boats on round-the-world sailing races for years.

This product is waterproof

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 fewer moving parts to wear out, Genasun controllers outlast the competition.

  GVB-8-Pb-12V GVB-8-Pb-24V GVB-8-Pb-36V GVB-8-Pb-48V
Rated Panel (Input) Current: 8A*
Minimum Panel Voltage for Charging: 5V
Minimum Battery Voltage for Operation: 9.5V
Maximum recommended Panel Open-Circuit Voltage (Voc) at STC: 51V
Absolute Maximum Panel Open-Circuit Voltage (Voc): 63V
Charge Profile: Multi-Stage with Temperature Compensation
Nominal Battery Voltage: 12V 24V 36V 48V
Maximum Recommended Panel Vmp: 13V 26V 41V 43V
Maximum Recommended Panel Power (8A Panel w/~155mm cells):

For higher power controllers, please visit the Blue Sky Energy Product Page.
105W 210W 325W 350W
Bulk Voltage: 14.4V 28.8V 43.2V 57.6V
Absorption Voltage: 14.2V 28.4V 42.6V 56.8V
Absorption Time: 2 Hours
Float Voltage (Pb models) or CV Voltage (Li models): 13.8V 27.6V 41.4V 55.2V
Battery Temperature Compensation: -28mV/°C -56mV/°C -84mV/°C -112mV/°C
Electrical Efficiency: 95% - 97% typical 96% - 98% typical 96% - 98% typical 96% - 99% typical
Night Consumption: 7mA 6mA 6mA 5mA
Tracking Efficiency: 99+% typical
MPPT Tracking Speed: 15Hz
Marine Grade: Yes
Waterproof: NO NO (See Genasun Model GVB-WP)
Connection: 4-position terminal block for 10-30AWG wire
Weight: 6.5oz., 185g
Dimensions: 5.5x2.5x1.2", 14x6.5x3.1cm
Warranty: 5 years

The GV-Boost solar charge controllers carry a 5-year warranty on materials and workmanship.

Genasun's warranty does not cover damage due to abuse or operation beyond the rated specifications.

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