Blue Sea Systems Dual USB Charger 4.8A – 12V/24V | 1039B

Add convenient USB charging to your Toyota FJ Cruiser, truck, SUV, RV, boat or other 12V/24V electrical system with the Blue Sea Systems 1039B Dual USB Charger.

Designed for demanding automotive, off-road and marine environments, the 1039B provides two USB charging ports with intelligent device recognition and up to 4.8 amps of total charging output. The charger automatically provides the charging rate required by compatible phones, tablets and other USB-powered devices.

Its compact rectangular design mounts into an existing Carling Contura-style switch opening, making it an excellent option for adding integrated USB charging to dashboards, switch panels and custom electrical installations.

Features

• Dual USB charging ports

• 4.8A maximum total output

• Intelligent device recognition

• Automatically adjusts charging output for compatible devices

• Compatible with 12V and 24V electrical systems

• Wide 9-32V DC input range

• 5V DC USB output

• Internal filtering helps reduce electronic interference

• Conformal-coated circuit board

• Designed for harsh automotive, off-road and marine environments

• Protective dust cap helps keep moisture and debris out

• Reverse polarity protection

• Short circuit protection

• Thermal overload protection

• Over-temperature protection

• Low 1mA parasitic current draw

• Fits a Carling Contura-style switch opening

• Blue Sea Systems part number 1039B

Ideal for Off-Road Vehicles, Trucks, SUVs, RVs & Boats

The Blue Sea Systems 1039B isn't limited to one specific vehicle. Its wide 9-32V DC operating range makes it suitable for a variety of automotive and marine electrical systems.

Popular applications include:

• Toyota FJ Cruiser

• Toyota 4Runner

• Toyota Tacoma

• Toyota Tundra

• Ford Bronco

• Jeeps

• Trucks and SUVs

• Overland vehicles

• RVs and campers

• Boats and marine applications

• UTVs and other compatible 12V/24V systems

• Custom switch panels

Because this is a universal electrical accessory, installation and fitment should be verified for your particular vehicle or application.

Great USB Charger Upgrade for the Toyota FJ Cruiser

For FJ Cruiser owners, the Blue Sea 1039B provides a clean way to add modern USB charging capability to the interior.

The rectangular body is designed to mount in a Carling Contura switch opening, making it well suited for factory-style and aftermarket switch panel installations.

Important: Modification or trimming of the factory switch opening may be required for proper installation in an FJ Cruiser or other vehicle.

Intelligent Device Recognition

The 1039B uses intelligent device recognition to provide the appropriate charging rate for compatible USB devices.

With up to 4.8A of combined output, it can be used to charge smartphones, tablets, GPS units and other USB-powered accessories while traveling, camping or off-roading.

Built for Harsh Environments

Blue Sea Systems designs electrical components for demanding marine and mobile applications.

The 1039B features a conformal-coated circuit board to provide additional protection in harsh environments. A protective dust cap helps keep moisture, dust and debris away from the USB ports when they're not being used.

This makes it particularly well suited for off-road vehicles, overland builds, boats and other applications where electronics can be exposed to dirt, dust and moisture.

Electrical Protection

Built-in protection features include:

• Reverse polarity protection

• Short circuit protection

• Thermal overload protection

• Over-temperature protection

Internal filtering also helps reduce electronic interference with other onboard electronics.

Specifications

Manufacturer: Blue Sea Systems
Part Number: 1039B
Pure Auto Parts SKU: 1039BSS
Type: Dual USB Charger
Number of USB Ports: 2
Maximum Output Current: 4.8A DC Total
Input Voltage: 12V DC Nominal
Input Voltage Range: 9-32V DC
Output Voltage: 5V DC ±5%
Parasitic Current Draw: 1mA
Port Configuration: Intelligent Device Recognition
Reverse Polarity Protection: Yes
Short Circuit Protection: Yes
Thermal Overload Protection: Yes

Cutout Dimensions

Height: 1.45" (36.83 mm)
Width: 0.83" (21.08 mm)

Designed to mount in a Carling Contura-style switch opening.

Always verify the available mounting space before installation. Some factory switch locations may require trimming or modification.

Frequently Asked Questions

Will the Blue Sea 1039B fit a Toyota FJ Cruiser?
The 1039B can be installed in an FJ Cruiser and is designed around a Carling Contura-style switch opening. However, modification or trimming of the factory opening may be required for proper fit.

Can I use the 1039B in other vehicles?
Yes. This is a universal charger rather than an FJ Cruiser-specific product. It can be used in many trucks, SUVs, Jeeps, overland vehicles, RVs, boats and other compatible electrical systems.

Does it work on both 12V and 24V systems?
Yes. The charger accepts an input voltage range of 9-32V DC, making it suitable for both nominal 12V and 24V systems.

How much charging power does it provide?
The two USB ports provide a maximum combined output of 4.8 amps at 5V DC.

Does it have built-in electrical protection?
Yes. The 1039B includes reverse polarity, short circuit and thermal overload protection.

Is this a USB-C charger?
No. The Blue Sea Systems 1039B uses traditional USB charging ports and should not be confused with newer USB-C/Power Delivery chargers.