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Genasun GVB-8-Li-56.8V, 350W 8A 48V Boost MPPT Controller for Lithium Batteries

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Pricing is an estimate, kits are customized for each building variation.
Pricing does not include freight shipping. Request a shipping quote and get a free roof layout.

Waterproof Version for Your Golf Cart

If you are looking for one for your golf cart, you would need the waterproof version, please click here:

Genasun GVB-8-LI-56.8V-WP
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, but traditional controllers are constantly off target during changing cloud conditions – exactly when power is scarce and is needed the most. Genasun controllers adapt to changing light conditions 20 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.

  • 99% Peak Efficiency
  • Continuous MPPT
  • Advanced electronic protections
  • IP40
  • 5 Year Warranty




Rated Panel Input Current: 8A*

Minimum Panel Voltage for Charging: 5V

Minimum Battery Voltage for Operation: 9.5V

Maximum Input Panel: 60V

Recom. Max Panel Voc at STC: 50V

Input Voltage Range: 0-60V

Maximum Input Short Circuit Current**: 8A*

Maximum Input Current***: 15A

Tracking Efficiency: 99+% typical

MPPT Tracking Speed: 15Hz

Float/CV Voltage: 56.8V

Nominal Battery Voltage: 48V 4S LiFePO4

Maximum Recommended Panel Vmp: 43V 

Maximum Recommended Panel Power: 350W   

Electrical Efficiency: 96%-99% typical 

Night Consumption: 5mA 

Charge Profile: CC/CV

Operating Temperature-40°C – 85°C

Maximum Full Power Ambient: 70°C

Environmental Protection: IP40 (Nickel-Plated Brass & Stainless Hardware

Connection: 4-position terminal block for 10-30AWG wire

CertificationscETLus Safety, Recognized Component cETLus HazLoc (C1D2), CE, FCC, RoHS

Weight (DiL): 6.5 oz., 185g

Dimensions: 5.5 x 2.5 x 1.2", 14 x 6.5 x 3.1 cm

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.


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