This bundle focuses on installing the NOCO GCP1 AC Port Plug, designed to provide a convenient and weather-resistant AC power inlet for vehicles or equipment. It is for those who need to easily connect an extension cord to power on-board chargers, heaters, or other AC devices. The included products ensure a successful and durable installation.
Curated by The Shelf Curator · Updated June 2026
Built for boat and RV owners who need a clean, weatherproof charging port without rewiring their entire battery system. Not for industrial high-draw machinery — this shop focuses on standard 15-amp battery maintenance and shore power access.
Curator's pick: 2-Inch Bi-Metal Hole Saw
Most people focus on the plug, but if you use a dull or cheap hole saw on fiberglass or heavy plastic, you'll crack the casing and ruin the aesthetic. This specific bit cuts clean enough that you won't need to spend an hour sanding the edges just to get a flush fit.
⚠ Worth knowing: The GCP1 housing is shallow, so if your mounting surface is thicker than 1.5 inches, you won't be able to thread the back-nut on properly. In those cases, you'll have to skip the ring and rely entirely on the stainless screws and sealant for a secure hold.
Deep Cycle Marine Battery BenchmarksDirect-to-Battery Ring Terminal ConnectorsWaterproof Cable Glands and Wire Pass-Throughs
This shop is built from the core need to easily and safely provide external AC power to a vehicle or piece of equipment. It solves the common problem of fumbling with extension cords and ensures a secure, weatherproof connection.
This setup is for vehicle owners, boat enthusiasts, or anyone with equipment requiring a permanent and convenient AC power inlet. It's ideal for those looking to power on-board battery chargers, engine block heaters, or other AC devices within a sealed environment.
To get started, focus on the core components for the port plug installation. A full build, including a charger and all necessary tools, will cost between $203 and $395. A starter path covering just the port plug, hole saw, and sealant is more modest.
Full build
$203–$395
Starter
$38–$73
Port Plug + Hole Saw + Sealant
Best forVehicle OwnersBoat EnthusiastsEquipment MaintenanceDIY Electrical ProjectsWeatherproof Power Access
The GCP1 15 Amp AC Port Plug is a male AC power inlet that allows external AC power to be connected to an on-board electrical system. It is designed for applications requiring a flush-mount, weather-resistant AC power connection, such as RVs, boats, or generators. This inlet provides a safe and easy way to charge batteries or power appliances within a vehicle or enclosure.
15 Amp AC power input
Flush-mount design
Rubberized weatherproofing cap
Fits standard 2-inch hole
Corrosion-resistant construction
In this shop: The GCP1 AC Port Plug embodies the NOCO focus on reliable and integrated power solutions, making it central to this shop's offerings.
The 2-Inch Bi-Metal Hole Saw is a cutting accessory designed for drilling clean, circular holes in various materials like metal, wood, and plastic. It is for installers who need to create the precise opening required for flush-mount electrical components. This hole saw ensures a snug fit for the NOCO GCP1, contributing to a professional and sealed installation.
2-inch diameter
Bi-metal construction
Variable pitch teeth
Arbor mount included
Cuts metal, wood, plastic
In this shop: A precise 2-inch hole saw is crucial for achieving the neat, integrated look consistent with the NOCO GCP1's design and the shop's quality installation vibe.
A Standard Cordless Drill Driver is a versatile power tool used for drilling holes and driving screws. It is for anyone undertaking installation or repair tasks around the home, workshop, or vehicle. This tool powers the hole saw to create openings for the AC port plug and securely fastens mounting screws, facilitating a complete installation.
18V-20V battery platform
Keyless chuck
Variable speed trigger
Forward/reverse switch
Integrated LED work light
In this shop: A reliable cordless drill driver supports the efficient and precise installation methods emphasized by the NOCO product line and this shop's practical ethos.
The Genius GEN5X1 5-Amp On-Board Battery Charger is an automatic, multi-chemistry battery charger designed to be permanently installed on a vehicle or equipment. It is for users needing a reliable way to charge and maintain 12V batteries from an AC power source. When paired with the AC port plug, it creates an integrated and sealed charging system.
5 Amp charging output
12V battery compatible
Multi-chemistry support (Lead-acid, LiFePO4)
Waterproof (IP68) casing
Built-in battery desulfator
In this shop: This Genius charger exemplifies the NOCO commitment to intelligent power management, making it a logical companion to the AC port plug for a complete system.
Clear Marine Grade Silicone Sealant is a waterproof adhesive and sealant designed to withstand harsh marine environments, UV rays, and extreme temperatures. It is for ensuring a watertight seal around mounted components on vehicles, boats, or outdoor equipment. Applying this sealant around the AC port plug prevents water intrusion and protects electrical connections.
Marine grade formulation
Clear, non-yellowing
Flexible and durable
UV and weather resistant
10.2 fl oz cartridge
In this shop: Marine grade silicone sealant reinforces the NOCO GCP1's weather-resistant properties, aligning with the shop's focus on durability and long-lasting installations.
Stainless Steel Pan Head Screws are corrosion-resistant fasteners with a broad, slightly domed head. They are for securely mounting components in environments where exposure to moisture or chemicals is a concern. Using these screws ensures the AC port plug remains firmly attached without unsightly rust stains, maintaining the integrity of the installation.
Stainless steel construction (304 or 316)
Pan head drive type
Phillips or square drive
Assorted lengths available
Corrosion and rust resistant
In this shop: Stainless steel screws complement the robust design of the NOCO GCP1, ensuring every part of the installation meets the high standards of durability and functionality.
Provides a permanent and weather-resistant AC power inlet, eliminating cable clutter and improving safety compared to direct cord connections.
Integrates seamlessly with on-board charging systems like the Genius GEN5X1, creating a professional and sealed power solution for battery maintenance.
Ensures a durable and secure installation thanks to corrosion-resistant fasteners and marine-grade sealant, protecting internal electrical components from the elements.
What to know
The installation requires drilling a precise 2-inch hole into your vehicle or equipment, which may be daunting for those new to power tools.
While providing a convenient AC inlet, this setup requires a separate on-board charger or other AC device to utilize the incoming power effectively.
How to use this together
1
Drill the Port Hole
Begin by selecting the desired location for your NOCO GCP1 AC Port Plug on your vehicle or equipment, ensuring there's enough space behind the mounting surface. Secure the 2-Inch Bi-Metal Hole Saw into your Standard Cordless Drill Driver and carefully drill a clean 2-inch diameter hole. This precise cut is crucial for a snug fit.
2
Install the Port Plug
Once the hole is drilled, insert the NOCO GCP1 15 Amp AC Port Plug into the opening. Apply a generous bead of Clear Marine Grade Silicone Sealant around the flange of the port plug where it meets the mounting surface. This sealant is vital for creating a watertight barrier against moisture and environmental elements. Secure the port plug using the Stainless Steel Pan Head Screws, ensuring it is firmly attached and the sealant is compressed.
3
Connect On-Board Devices
With the AC Port Plug installed and sealed, you can now connect your on-board AC devices. For instance, wire the input of the Genius GEN5X1 5-Amp On-Board Battery Charger directly to the internal connections of the GCP1. This creates a dedicated and sealed system, allowing you to easily plug an extension cord into the external port to power your charger.
