Genasun Boost MPPT – GVB-8 Lithium 28.4V


If you do have 28.4V batteries, SUNBEAMsystem recommends Genasun GV-Boost MPPT controllers. Designed to step-up lower-voltage solar panels to charge higher-voltage lithium batteries.

The best choice to get the best performance and best longevity out of your solar panels. This type of controller aims to benefit from having solar panels connected in parallel.

Max PV: 210W
• 99% Peak Efficiency
• Continuous MPPT
• Advanced electronic protections
• IP40
• 5 Year Warranty

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SKU: GVB-8-Li-28.4V Categories: , Tags: , , , , , ,

Genasun Boost MPPT – GVB-8 Lithium 28.4V

Genasun BOOST solves the serial connection problem

You might already be aware that if you connect your solar panels in series you increase the probability of a reduced lifespan on the solar panels. Besides that for a serial connection a by-pass diode is required which will decrease the output. Furthermore during partial shadowing which is common among our customers a serial connection will underperform in comparison with the parallel setup. The MoonRay controller solves this and more for a 12V system but for 24V, 48V and 52V battery systems you should choose the Genasun Boost controller for the best performance and health of your solar panels.

Tested and approved for all environments

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.


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) Current8A*
Minimum Panel Voltage for Charging5V
Minimum Battery Voltage for Operation9.5V
Absolute Maximum Panel Open-Circuit Voltage (Voc)60V
Recommended Max Panel Voc at STC50V
Input Voltage Range0-60V
Maximum Charge Voltage28.4V
Maximum Input Short Circuit Current**8A*
Maximum Input Current***15A
Tracking Efficiency99+% typical
MPPT Tracking Speed15Hz
Float/CV Voltage28.4V
Nominal Battery Voltage24V 8S LiFePO4
Maximum Recommended Panel Vmp26V
Maximum Recommended Panel Power210W
Electrical Efficiency96%-98% typical
Night Consumption6mA
Charge ProfileCC/CV
Operating Temperature-40°C – 85°C
Maximum Full Power Ambient70°C
Environmental ProtectionIP40 (Nickel-Plated Brass & Stainless Hardware)
Connection4-position terminal block for 10-30AWG wire
CertificationscETLus Safety, Recognized Component cETLus HazLoc (C1D2), CE, FCC, RoHS
Weight6.5 oz., 185g
Dimensions5.5 x 2.5 x 1.2″, 14 x 6.5 x 3.1 cm
Warranty5 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.

Additional information

Weight0.185 kg
Dimensions14 × 6.5 × 3.1 cm