GVB-8 (Boost) | 105-350W
    Solar Boost Charge Controller with MPPT

The industry's most efficient boost controllers. These controllers boost lower-voltage solar panels up to charge higher-voltage lead-acid batteries up to 48V nominal

8A 12/24/36/48V Boost MPPT Controller

  • 99% Peak Efficiency
  • Continuous MPPT
  • IP40
  • Advanced electronic protections
  • 5 Year Warranty
  • CE, FCC, and RoHS compliant

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Price: from $119.00

Genasun GVB-8 (Boost) 105-350W Solar Boost Charge Controller with MPPT

Want to see a 27V grid-tie panel charge a 48V battery pack? Get a GVB.
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. 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.

Mission-Critical Reliability
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. 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. But moving vehicles and changing cloud cover require 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. Simply put, other controllers can't keep up.


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

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.

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.

Rated Panel (Input) Current:8A*
Minimum Panel Voltage for Charging:5V
Minimum Battery Voltage for Operation:9.5V
Recommended Max Panel Voc at STC:50V
Absolute Maximum Panel Open-Circuit Voltage (Voc):60V
Input Voltage Range:0-60V
Maximum Input Short Circuit Current**:8A*
Maximum Input Current***:15A
Charge Profile:Multi-Stage with Temperature Compensation
Nominal Battery Voltage:12V24V36V48V
Maximum Recommended Panel Vmp:13V26V41V43V
Maximum Recommended Panel Power (8A Panel w/~155mm cells):

For higher power controllers, please visit the Blue Sky Energy Product Page.
Bulk Voltage:14.4V28.8V43.2V57.6V
Absorption Voltage:14.2V28.4V42.6V56.8V
Absorption Time:2 Hours
Float Voltage (Pb models) or CV Voltage (Li models):13.8V27.6V41.4V55.2V
Battery Temperature Compensation:-28mV/°C-56mV/°C-84mV/°C-112mV/°C
Electrical Efficiency:95% - 97% typical96% - 98% typical96% - 98% typical96% - 99% typical
Night Consumption:7mA6mA6mA5mA
Tracking Efficiency:99+% typical
MPPT Tracking Speed:15Hz
Environmental Protection:IP40 (Terminals Nickel Plated)
Connection:4-position terminal block for 10-30AWG wire
Certifications:cETLus Safety, Recognized Component cETLus HazLoc (C1D2), CE, FCC, RoHS
Weight:6.5oz., 185g
Dimensions:5.5x2.5x1.2", 14x6.5x3.1cm
Warranty:5 years

* Panel ratings have increased since we designed the GVB. 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, we feel comfortable recommending the GVB for panels with Imp up to 9A.
** Panel Isc. Maximum input power and maximum input voltage requirements must also be respected.
*** Maximum current that the controller could draw from an unlimited source. This specification is not intended for determining PV input.

Download the Manual: GVB-8 (Boost) Manual (340 downloads)

Download the Datasheet: GVB-8 (Boost) Datasheet (241 downloads)

Download the Basic System Schematics: GVB-8-Pb 12V-48V_System_Schematic (594 downloads)

If you have any questions please visit our FAQ

The GVB-8 (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.