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Rexing - 4000A Jump Starter, 12V Car Battery Booster with 65W Quick Charger

Model: RJ4000
SKU: 11024674
$104.99
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Comp. Value: $149.99
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About This Item

The Rexing RJ4000 4000A Jump Starter is a high-performance portable battery pack designed for reliable vehicle starting in any situation. With a 24000mAh capacity and 4000A peak current, it jump starts gasoline and diesel engines up to 10 liters, covering cars, SUVs, trucks, boats, and more. The HD LCD display keeps you informed about battery level and operational status, while 65W USB-C fast charging and a QC3.0 USB-A port make it a versatile power bank for phones, tablets, laptops, and other electronics. Its one-touch boost feature helps start vehicles in low-voltage emergencies, and the multi-function LED flashlight with SOS, strobe, and steady modes adds safety in the dark. Built to endure tough conditions, the RJ4000 operates from -4°F to 140°F, is IP64 water-resistant, and meets FCC, CE, ROHS, and UN38.3 safety certifications. Backed by a 12-month warranty and responsive customer support, the RJ4000 is your trusted travel and emergency companion.
  • General
    • Brand: Rexing
    • Model Number: RJ4000
    • Product Name: 4000A Jump Starter, 12V Car Battery Booster with 65W Quick Charger
  • Power
    • Amperage: 4000 (Strength of electrical current.)
    • Voltage: 12 (Amount of power needed to support an electrical current.)
    • Charger Type: DC
    • Auto Shut-Off: true (Feature automatically turns off the product.)
  • Dimensions
    • Product Weight: 4.0 pounds (The out of box weight of the item.)
    • Cord Length: 1 feet
  • Warranty
    • Warranty - Parts: 12-month or 18-month with Product Registration
    • Warranty - Labor: 12-month or 18-month with Product Registration
  • Other
    • UPC: 810046609491

The Rexing RJ4000 4000A Jump Starter is a high-performance portable battery pack designed for reliable vehicle starting in any situation. With a 24000mAh capacity and 4000A peak current, it jump starts gasoline and diesel engines up to 10 liters, covering cars, SUVs, trucks, boats, and more. The HD LCD display keeps you informed about battery level and operational status, while 65W USB-C fast charging and a QC3.0 USB-A port make it a versatile power bank for phones, tablets, laptops, and other electronics. Its one-touch boost feature helps start vehicles in low-voltage emergencies, and the multi-function LED flashlight with SOS, strobe, and steady modes adds safety in the dark. Built to endure tough conditions, the RJ4000 operates from -4°F to 140°F, is IP64 water-resistant, and meets FCC, CE, ROHS, and UN38.3 safety certifications. Backed by a 12-month warranty and responsive customer support, the RJ4000 is your trusted travel and emergency companion.

  • 24000mAh & 4000A Peak Power: Equipped with a powerful 24000mAh battery, the RJ4000 jump starter quickly revives 12V vehicles including cars, trucks, boats, and more, supporting gasoline and diesel engines up to 10 liters.
  • HD LCD Display: The clear LCD screen shows real-time status indicators, making it easy to monitor battery level and operational status at a glance.
  • 65W USB-C Fast Charging: Features a 65W USB-C in/out port and a QC3.0 USB-A port. Fully recharges in just 1.3 hours and powers devices such as phones, laptops, and tablets—perfect for travel and camping.
  • One-Touch Boost & Multi-Mode LED Light: Start vehicles in low-voltage conditions with one touch. Built-in LED flashlight includes SOS, strobe, and steady light modes for emergencies.
  • Durable & Certified Safe: Operates from -4°F to 140°F, IP64 water-resistant and dustproof. Certified to FCC, CE, ROHS, and UN38.3 safety standards. Includes 12-month warranty and responsive customer support.
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Rexing - 4000A Jump Starter, 12V Car Battery Booster with 65W Quick Charger
Rexing - 4000A Jump Starter, 12V Car Battery Booster with 65W Quick Charger

The Rexing RJ4000 4000A Jump Starter is a high-performance portable battery pack designed for reliable vehicle starting in any situation. With a 24000mAh capacity and 4000A peak current, it jump starts gasoline and diesel engines up to 10 liters, covering cars, SUVs, trucks, boats, and more. The HD LCD display keeps you informed about battery level and operational status, while 65W USB-C fast charging and a QC3.0 USB-A port make it a versatile power bank for phones, tablets, laptops, and other electronics. Its one-touch boost feature helps start vehicles in low-voltage emergencies, and the multi-function LED flashlight with SOS, strobe, and steady modes adds safety in the dark. Built to endure tough conditions, the RJ4000 operates from -4°F to 140°F, is IP64 water-resistant, and meets FCC, CE, ROHS, and UN38.3 safety certifications. Backed by a 12-month warranty and responsive customer support, the RJ4000 is your trusted travel and emergency companion.

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This WOLFBOX car jump starter provides up to 4000A peak current and high capacity. It can safely start gas and diesel engines. Works on all (12 volt) cars, trucks, boats and large vehicles, meanwhile it is very portable. The battery jump starter works with a smart jumper clip to provide 10 safety protections to ensure safe use. The car jump starter power supply contains an LED screen that clearly displays all status indicators of the portable car jump starter power supply. You can easily identify the current status of your emergency power source and provide seamless access to all functions. This car jumper is also equipped with 1*65W Type-C input/output port and 1*QC 3.0 USB-A port, and also contains a PD 65W fast charger, which can save 50 when charging your mobile phone, tablet, Kindle or digital camera 50% time.

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Pros for Rexing - 4000A Jump Starter, 12V Car Battery Booster with 65W Quick Charger
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