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Genasun 8A MPPT 48V Voltage Boost (Lead-Acid) Solar Charge Controller

15 Hz MPPT Boost for 48V Lead-Acid | 8A Input | Made in USA


Regular price $240.00
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Top-down view of Genasun GVB-8-Pb-48V MPPT solar controller showing status LEDs and connection terminals

Genasun 8A MPPT 48V Voltage Boost (Lead-Acid) Solar Charge Controller

DESCRIPTION

Genasun GV-Boost 8A MPPT 48V Voltage Boost Solar Charge Controller for Lead-Acid Batteries

Step-Up MPPT Technology for Efficient 48V Battery Charging from Lower Voltage Panels

The Genasun GV-Boost 8A MPPT 48V is a specialised solar charge controller engineered to charge 48V lead-acid battery banks from solar panels with a lower nominal voltage. Unlike conventional controllers that step down voltage, this boost MPPT controller actively increases panel voltage to match your 48V system, enabling the use of cost-effective, larger-format panels typically rated for 12V or 24V nominal output. This approach reduces overall system cost while maintaining high charging efficiency.

Designed for off-grid solar systems, remote telecommunications, and mobile applications, the GV-Boost delivers precise Maximum Power Point Tracking (MPPT) at 15 times per second, ensuring optimal energy harvest even under rapidly changing light conditions. Its robust construction and advanced charging algorithm make it a reliable choice for critical installations where consistent power is essential.

Advanced MPPT Performance for Dynamic Environments

Many standard MPPT controllers use a slow sweep-and-sleep method, scanning the panel's power curve every 30 to 60 seconds. This can lead to significant energy loss during intermittent cloud cover or when panels are mounted on moving vehicles. The Genasun GV-Boost overcomes this limitation with a high-speed MPPT algorithm that adjusts 15 times per second, capturing more energy in variable conditions. With a tracking efficiency exceeding 99%, it ensures your panels operate at their maximum power point almost continuously.

This rapid response is particularly valuable for marine solar installations, RV solar setups, and any mobile platform where shading and orientation change frequently. The controller's ability to maintain peak performance reduces battery charge time and improves overall system reliability.

Engineered for Mission-Critical Reliability

Genasun controllers are trusted in some of the world's most demanding environments, from Antarctic research stations to high-altitude solar-powered aircraft. The GV-Boost is built to the same exacting standards, featuring nickel-plated brass and stainless steel hardware for corrosion resistance, and an operating temperature range of -40°C to 85°C. Each unit undergoes comprehensive electrical testing before leaving the USA factory, ensuring consistent performance when it matters most.

The controller's computer-controlled, temperature-compensated 3-stage charging profile optimises battery life and capacity for lead-acid chemistries, including AGM and gel types. It also includes a trickle charge recovery feature that can revive batteries discharged as low as 0V, adding an extra layer of resilience for unattended systems.

Key Features

  • Boost MPPT topology steps up voltage from lower-voltage panels to charge 48V lead-acid batteries
  • High-speed 15 Hz MPPT tracking adapts to changing light 15 times per second for maximum energy yield
  • Wide input voltage range (0-60V) compatible with most solar panels below battery voltage
  • Temperature-compensated 3-stage charging prolongs battery life and ensures full charge
  • Rugged construction with nickel-plated brass and stainless hardware for long-term durability
  • Compact, lightweight design (5.5" x 2.5" x 1.2" / 14 cm x 6.5 cm x 3.1 cm, 185 g) for easy integration
  • Made in the USA with full electrical testing on every unit

Cost-Effective System Design

By enabling the use of a single large solar panel instead of multiple smaller panels wired in series, the GV-Boost can significantly lower your total system cost. Larger panels typically have a lower cost per watt, and the boost controller eliminates the need for complex series-parallel configurations. This simplifies installation and reduces balance-of-system components, making it an ideal solution for 48V off-grid solar kits, remote monitoring stations, and telecom power systems.

The controller accepts a maximum panel short circuit current of 8A and a recommended max Voc at STC of 50V, providing flexibility to pair with a wide range of solar modules. Its 4-position terminal block accommodates wire sizes from 10 to 30 AWG (approx. 0.05 mm² to 5.3 mm²), ensuring secure connections in field installations.

Applications

  • Charging 48V lead-acid battery banks in off-grid cabins and remote homes
  • Marine and RV solar systems requiring robust, fast-tracking MPPT control
  • Telecommunications and SCADA equipment in isolated locations
  • Solar-powered environmental monitoring and IoT devices
  • Backup power systems for critical loads

Whether you're upgrading an existing 48V solar installation or designing a new off-grid power system, the Genasun GV-Boost 8A MPPT controller offers a unique combination of boost capability, high-speed tracking, and proven durability. Its ability to extract maximum power from lower-voltage panels makes it a smart choice for applications where efficiency and reliability are paramount.

Ready to optimise your 48V solar charging? Add the Genasun GV-Boost 8A MPPT 48V to your system today and experience the difference that precision-engineered MPPT technology can make.

SPECIFICATIONS

Product Specifications

Specification GVB-8, All Models
Rated Panel (Input) Current 8 A
Minimum Panel Voltage for Charging 5 V
Minimum Battery Voltage for Operation 9.5 V
Trickle Charge to Recover Dead (0V) Battery Yes
Maximum Input Panel 60 V
Recommended Max Panel Voc at STC 50 V
Input Voltage Range 0-60 V
Maximum Input Short Circuit Current 8 A
Maximum Input Current 15 A
Tracking Efficiency 99+% typical
MPPT Tracking Speed 15 Hz
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 10-30 AWG wire
Certifications cETLus, CE, FCC, RoHS
Weight 6.5 oz., 185 g
Dimensions 5.5" x 2.5" x 1.2" (14 cm x 6.5 cm x 3.1 cm)
Warranty 5 years

SKU: GVB-8-Pb-48V
Model #: GVB-8-Pb-48V
MPN: GVB-8-Pb-48V

WARRANTY

Genasun Warranty Policy

This warranty policy applies to Genasun solar charge controllers supplied by us in Australia. As the Australian supplier or importer of these products, we support warranty claims for Genasun products supplied by us in accordance with the applicable manufacturer warranty and Australian Consumer Law.

Genasun solar charge controllers supplied by us are covered against defects in materials and workmanship for the warranty period applicable to the relevant product model range, subject to the product being selected, installed, operated, stored and maintained correctly and in accordance with the manufacturer's instructions.

This warranty applies to the original end-user purchaser of the product, as evidenced by a valid proof of purchase. The benefits given by this warranty are in addition to other rights and remedies available under law.

Warranty Coverage and Periods

This warranty covers Genasun solar charge controllers supplied by us. The warranty periods for each product model range are set out below.

Genasun Product Model Range Warranty Length Application / Notes
Genasun GV-5 Solar Charge Controllers 120 months Applies to all Genasun GV-5 charge controller models, including lead-acid and lithium variants, where installed and operated in accordance with the manufacturer's instructions.
Genasun GV-5-MOD Solar Charge Controller Modules 120 months Applies to all Genasun GV-5-MOD charge controller module models, including lead-acid and lithium variants, where installed and operated in accordance with the manufacturer's instructions.
Genasun GV-4 Solar Charge Controllers 60 months Applies to all Genasun GV-4 charge controller models, including lead-acid and lithium variants, where used within the product's rated specifications.
Genasun GV-10 Solar Charge Controllers 60 months Applies to all Genasun GV-10 charge controller models, including lead-acid and lithium variants, where used within the product's rated specifications.
Genasun GVB-8 Boost Solar Charge Controllers 60 months Applies to all Genasun GVB-8 boost charge controller models, including lead-acid and lithium variants, where correctly selected for the solar panel and battery voltage being used.
Genasun GVB-8-WP Waterproof Boost Solar Charge Controllers 60 months Applies to all Genasun GVB-8-WP waterproof boost charge controller models, including lead-acid and lithium variants, where installed and operated within the product's rated specifications.

The warranty period begins on the date the product is sold to the original consumer purchaser, as shown on the valid proof of purchase. A valid proof of purchase identifying the purchaser and date of purchase is required for all warranty claims.

Installer Responsibilities and System Design

Genasun solar charge controllers are installed into broader solar charging, battery charging, vehicle, marine, RV, off-grid or industrial electrical systems. Once installed, the product forms only one component of a larger system.

We do not provide installation services unless expressly stated in writing, and we do not supervise or control installation practices carried out by dealers, installers, contractors or end-users. The installer, system designer, integrator, dealer or end-user is responsible for ensuring that the product is suitable for the intended application and is installed correctly.

Issues or damage arising from incorrect installation, poor system design, incorrect configuration, incompatible equipment, inadequate protection, unsuitable mounting, unsuitable environmental conditions or failure to follow the manufacturer's instructions are not product defects and are not covered by this warranty.

Appropriate Installation

All Genasun solar charge controllers must be installed in accordance with the product manual, the manufacturer's installation instructions, applicable Australian Standards, relevant electrical, automotive, marine, solar or industry standards, and recognised industry best practice.

The installer must ensure that the product is used in an appropriate environment and within its specified ratings. Improper, unsafe, unlicensed, sub-standard or non-compliant installation may void or limit warranty coverage.

System Compatibility

The installer or integrator is responsible for selecting and using compatible components. This includes ensuring compatibility with solar panels, batteries, battery chemistry, battery voltage, charge profiles, loads, wiring, fuses, circuit breakers, connectors, mounting hardware and any other connected equipment.

Damage or underperformance caused by incompatible, incorrectly configured, undersized, oversized, unsuitable or improperly installed equipment is not covered by this warranty.

System-Wide Performance

Overall system performance depends on design, installation, configuration, solar panel selection, battery condition, usage, maintenance and environmental factors beyond the Genasun product itself. This warranty covers the quality of the individual Genasun solar charge controller supplied by us only. It does not guarantee the performance of the broader solar or electrical system into which the product is installed or integrated.

Issues such as insufficient charging, poor solar performance, incorrect battery charging, battery damage, voltage drop, nuisance faults, overheating, intermittent operation or operational shortfalls caused by system design, installation, configuration or connected equipment are outside the scope of this warranty.

Installation Location and Environmental Suitability

The installer must ensure that Genasun solar charge controllers are mounted, located, supported, ventilated and protected in a manner suitable for the installation environment.

Where relevant, the installer must allow for heat dissipation, ventilation, moisture exposure, dust, vibration, corrosion risk, electrical clearance, mechanical loading, access for inspection and service, and protection from unsuitable environmental conditions.

Damage caused by unsuitable mounting, inadequate ventilation, moisture, water ingress, dust, corrosion, excessive heat, vibration, insufficient clearance, unsuitable substrate selection or other installation environment issues is not a manufacturing defect and is not covered by this warranty.

System Protection and Fault Isolation

The installer must incorporate suitable protective devices and design measures appropriate to the product and installation type. This may include correctly rated fuses, circuit breakers, isolators, over-current protection, over-voltage protection, reverse-polarity protection, surge protection, correct cable sizing and other protective devices required by standards or best practice.

The installer is responsible for ensuring that a fault or failure in one component does not cause cascading damage to other components. Damage to Genasun products caused by inadequate system protection, poor fault isolation, incorrect protection settings or missing safety devices is not covered by this warranty.

Service Accessibility Requirement

Products must be installed in a manner that allows reasonable access for inspection, testing, servicing, removal and replacement. We are not responsible for additional labour, structural modification, access equipment, removal of fixtures, cabinetry, panels, flooring, trim, sealants, adhesives or other costs arising from installation methods that restrict reasonable access to the product.

Installation Documentation

We may require documentation of the installation when assessing a warranty claim. This may include photos of the product in its installed location, wiring diagrams, system layout, solar panel details, battery details, serial numbers, details of connected equipment, installer details, commissioning records, service history, fault logs, operating settings and maintenance records.

Failure to provide reasonable installation evidence may limit our ability to assess the claim.

Independence of Dealers and Installers

Dealers, resellers, installers and contractors act independently and are not agents, employees or representatives of Genasun, Sunforge or us unless expressly agreed in writing. We are not responsible for the acts, omissions, workmanship, advice, representations, installation practices or system design decisions of independent dealers, resellers, installers, contractors or third parties.

What This Warranty Does Not Cover

This warranty covers manufacturing defects or failures of the product arising from normal use in accordance with the manufacturer's instructions. It does not cover any failure, damage, performance issue, deterioration or loss caused wholly or partly by external factors, misuse, incorrect installation or circumstances outside the manufacturer's control.

  • Incorrect installation, wiring, connection or configuration
  • Incorrect product selection or application
  • Use outside the product's intended purpose
  • Operation outside the product's rated technical specifications
  • Incorrect solar panel voltage, battery voltage, battery chemistry or charge profile
  • Failure to follow the manufacturer's storage, usage, installation, operation or maintenance instructions
  • Alteration, modification, disassembly or tampering
  • Repair or service not carried out by a manufacturer-authorised repair facility
  • Application of foreign substances or contamination
  • Improper operation, misuse, abuse or neglect
  • Physical impact, accidental damage or mechanical damage
  • Corrosion or environmental damage outside the product's rated specifications
  • Lightning, surge damage or other acts of God
  • Use with incompatible, incorrectly rated or improperly configured third-party components
  • Damage caused by inadequate fusing, circuit protection, isolation or system protection
  • Damage caused by moisture, water ingress, dust, corrosion or unsuitable installation environments
  • Damage caused by excessive heat, inadequate ventilation or installation in an unsuitable location
  • Damage caused by vibration, movement, poor mounting or inadequate support
  • Normal wear and tear, cosmetic ageing, cosmetic deterioration or surface marks that do not affect product function
  • Failure to carry out reasonable inspection, cleaning, maintenance or servicing where required
  • Products with removed, altered, damaged or illegible serial numbers, rating labels or identification markings
  • Products purchased second-hand, from unauthorised channels, auction sites, liquidation sales or grey-market sources
  • Labour costs for removal, replacement, reinstallation or diagnosis
  • Freight, travel, call-out costs or access costs unless otherwise required by law
  • Products not returned for assessment when reasonably required
  • Consequential or incidental loss, including damage to other equipment, downtime, loss of use, loss of revenue or economic loss, to the extent permitted by law

Warranty Assessment and Remedy

If a Genasun solar charge controller supplied by us is found to be defective within the applicable warranty period, we will, at our discretion and subject to the requirements of Australian Consumer Law, arrange a repair, replacement, store credit, refund or another appropriate remedy.

Products may need to be returned for assessment before a warranty claim can be approved. Where required, the product must be returned with dated proof of purchase, product details, serial number if available, installation information and a clear description of the fault.

If the product is required to be returned to Genasun, Sunforge or another nominated assessment location for inspection or repair, a return authorisation process may be required before the product is sent. Products sent without the required return authorisation or documentation may not be processed.

If a product is assessed and found not to be defective, or the issue is found to be caused by an excluded factor, the claim may be rejected. In that case, assessment fees, freight, insurance and return costs may be payable by the customer to the extent permitted by law.

Labour costs for removing, replacing, reinstalling or diagnosing a product are not covered by this express warranty unless otherwise required under Australian Consumer Law.

Making a Warranty Claim

If you suspect a fault with a Genasun product supplied by us, do not immediately remove or uninstall the product unless it is unsafe to leave it in place or unless authorised as part of the warranty process. Premature removal may cause further damage or make it difficult to determine the original cause of the issue.

  1. Contact us: Contact us with your dated proof of purchase, product model, serial number if available, and a description of the fault.
  2. Provide product and installation information: We may request installation photos, wiring details, solar panel details, battery details, connected equipment details, operating settings, measurements or service history to assist with assessment.
  3. Assessment and troubleshooting: We may ask for safe checks, photos, voltage readings, current readings, testing information or other details to determine whether the issue appears to be a product fault or is caused by installation, configuration, connected equipment, environment or misuse.
  4. Return for inspection if required: If the fault cannot be confirmed remotely, the product may need to be returned for inspection, testing, repair or replacement assessment. Return instructions will be provided where required.
  5. Outcome: If the product is confirmed to be faulty and covered by this warranty, we will advise the available remedy. If the product is found not to be faulty, or the issue is caused by an excluded factor, the claim may be rejected.

Remedies Under Warranty

If a defect covered by this warranty is confirmed, we may provide one or more of the following remedies, subject to the circumstances of the claim and the requirements of Australian Consumer Law:

  • repair of the product;
  • replacement of the product;
  • store credit;
  • refund;
  • supply of replacement parts; or
  • another appropriate remedy required by law.

Repair or replacement under this warranty does not restart or extend the original warranty period. The warranty continues from the original purchase date.

Manufacturer Support

Genasun products may be assessed, repaired or replaced through Sunforge, Genasun or another nominated service process. Where available, we may assist customers in arranging assessment, but any manufacturer service is subject to the manufacturer's own process, requirements and continued availability.

Where a manufacturer return authorisation is required, the product must not be sent until the required authorisation has been issued and the return instructions have been provided.

Australian Consumer Law

This warranty is in addition to other rights and remedies available at law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

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