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Genasun 8A MPPT 12V Voltage Boost (14.2V Lithium) Solar Charge Controller

15Hz MPPT Tracking | Waterproof | 8A Input | 14.2V Lithium CC-CV


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$230.00
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Top-down view of Genasun GVB-8-Li-14.2V MPPT solar controller showing LED indicators and terminals

Genasun 8A MPPT 12V Voltage Boost (14.2V Lithium) Solar Charge Controller

DESCRIPTION

Genasun 8A MPPT Voltage Boost Solar Charge Controller for 14.2V Lithium Batteries

Advanced MPPT Boost Technology for Efficient Lithium Charging from Lower Voltage Panels

The Genasun GV-Boost 8A MPPT solar charge controller is engineered to solve a common off-grid challenge: charging a 12V lithium battery from a solar panel with a voltage lower than the battery. Unlike conventional controllers that require panel voltage to exceed battery voltage, this MPPT boost controller actively steps up the input voltage, enabling the use of larger, more cost-effective panels that would otherwise be incompatible. This results in a significantly lower overall system cost while maintaining high charging efficiency.

Designed specifically for 14.2V lithium batteries (LiFePO4 and other lithium chemistries requiring a 14.2V constant-voltage charge), the GVB-8-Li-14.2V delivers a precise CC-CV charge profile that maximises battery lifespan and capacity. With a rated panel input current of 8A, it supports panels up to approximately 105W when using typical 155mm cell panels, making it ideal for caravan solar systems, marine applications, remote off-grid installations, and any setup where panel voltage is constrained.

High-Speed MPPT: 15Hz Tracking for Dynamic Conditions

Not all MPPT controllers are equal. Many budget controllers use a slow “sweep and sleep” algorithm, scanning the power curve every 30 to 60 seconds. This is adequate for stationary panels under clear skies, but fails to capture energy during rapidly changing light conditions caused by cloud cover, shading, or vehicle movement. The Genasun GV-Boost features a 15Hz MPPT tracking speed, adjusting to new maximum power points 15 times per second. This ensures you harvest every available watt, whether mounted on a moving caravan, a boat at sea, or in a partially shaded fixed installation. Combined with a tracking efficiency exceeding 99%, this controller consistently outperforms slower alternatives.

Mission-Critical Reliability for Harsh Environments

Genasun controllers are trusted in the world’s most demanding locations—from Antarctic research stations to high-altitude solar aircraft and long-duration marine voyages. Each unit is manufactured in the USA and undergoes comprehensive electrical testing to ensure flawless operation when reliability is non-negotiable. The fully potted, waterproof electronics protect against moisture, salt spray, and vibration, making this controller suitable for marine solar panels and coastal environments. A fanless design eliminates moving parts that can fail, while ultra-low self-consumption (just 7mA at night) preserves battery charge during dark periods.

Key Features

  • Voltage Boost MPPT: Charges 12V lithium batteries from panels with Vmp as low as 5V, enabling use of large, economical panels
  • 15Hz High-Speed Tracking: Captures 99%+ of available power even under fast-changing light and partial shading
  • Precision CC-CV Charging: Computer-controlled constant-current/constant-voltage profile optimised for 14.2V lithium batteries, maximising cycle life
  • Waterproof and Rugged: Potted electronics and corrosion-resistant construction withstand marine, coastal, and extreme weather conditions
  • Ultra-Low Self-Consumption: Draws only 7mA at night, minimising battery drain during standby
  • Wide Panel Compatibility: Accepts any panel with Voc up to 63V and rated current up to 8A, providing flexibility in system design
  • Made in the USA: Each controller is individually tested to ensure mission-critical reliability

Optimised for Lithium: 14.2V Constant Voltage Charging

Lithium batteries require precise voltage control to achieve full charge without risk of overvoltage damage. The GVB-8-Li-14.2V delivers a constant voltage of 14.2V during the absorption phase, perfectly matching the requirements of many LiFePO4 and other lithium chemistries. This eliminates the guesswork and potential hazards of using generic lead-acid profiles, ensuring your battery reaches full capacity safely and efficiently. The controller automatically transitions to float mode once the battery is fully charged, preventing overcharging while maintaining readiness.

Cost-Effective System Design

Traditional MPPT controllers require the solar panel’s maximum power voltage (Vmp) to be higher than the battery voltage. This often forces system designers to use multiple smaller panels wired in series, increasing cost and complexity. With the Genasun boost controller, you can use a single large panel with a lower voltage—typically cheaper per watt—and still charge a 12V battery. For example, a 105W panel with a Vmp around 13V can be used instead of two 50W panels in series, reducing mounting hardware, wiring, and potential failure points. This makes the GV-Boost an excellent choice for DIY solar projects, caravan upgrades, and off-grid cabins where budget and simplicity are priorities.

Easy Installation and Clear Status Indication

The controller features clearly labelled panel and battery terminals with robust screw connections, accepting wires up to 4mm² (approx. 12 AWG). Integrated LED indicators provide at-a-glance status: Standby, Charging, Full, and Error states, simplifying troubleshooting. The compact, lightweight housing includes integrated mounting flanges for secure attachment to any surface, and the potted construction allows installation in exposed locations without additional enclosures.

Applications

  • Caravans and RVs: Maximise solar harvest from roof-mounted panels with limited space and variable shading
  • Marine and Boats: Waterproof design and corrosion resistance ideal for saltwater environments
  • Remote Off-Grid Systems: Reliable power for cabins, sheds, and monitoring equipment where maintenance access is limited
  • Portable Solar Kits: Lightweight and durable for camping, overlanding, and field research

Upgrade your solar charging system with the Genasun 8A MPPT Voltage Boost Controller and experience the difference that high-speed tracking, rugged reliability, and lithium-optimised charging can make. Whether you’re powering a weekend adventure or a critical remote installation, this controller delivers consistent, efficient performance. Add the Genasun GV-Boost to your system today and harness more energy from your solar panels.

SPECIFICATIONS

Product Specifications

Specification GVB-8-Pb-12V GVB-8-Pb-24V GVB-8-Pb-36V GVB-8-Pb-48V GVB-8-Li-xxV
Rated Panel (Input) Current 8A 8A
Minimum Panel Voltage for Charging 5V 5V
Minimum Battery Voltage for Operation 9.5V 9.5V
Absolute Maximum Panel Open-Circuit Voltage (Voc) 63V 63V
Charge Profile Multi-Stage with Temperature Compensation CC-CV
Nominal Battery Voltage 12V 24V 36V 48V (See specs for closest Pb equivalent.)
Maximum Recommended Panel Vmp 13V 26V 41V 43V -
Maximum Recommended Panel Power (8A Panel w/~155mm cells) 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 **V as specified in part number
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 (See specs for closest Pb equivalent.)
Night Consumption 7mA 6mA 6mA 5mA -
Tracking Efficiency 99%+ typical 99%+ typical
MPPT Tracking Speed 15Hz 15Hz

SKU: GVB-8-Li-14.2V
Model #: GVB-8-Li-14.2V
MPN: GVB-8-Li-14.2V

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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