A front studio view of the GEARWRENCH GWLBJ30 12V/24V lithium battery jump starter. The portable unit features a durable molten orange and black housing with an integrated carrying handle, an LCD digital display, and side-mounted heavy-duty battery clamps.
A perspective view of the GEARWRENCH 3000 amp jump starter with the red and black jumper cables extended. A graphic overlay indicates the high-capacity lithium battery is capable of 85 plus jump starts on a single full charge.
A technical marketing infographic of the GEARWRENCH portable power bank. Callouts highlight safe operation with seven protective features, the compact and powerful 4.9-pound design, a portable multi-port power bank for smartphones, and a 3-mode LED emergency flashlight.
An infographic showcasing the performance specs of the GWLBJ30 jump starter. Text identifies the 3000 peak amps with maximum starting voltage, the ability to start 12V and 24V gas and diesel vehicles (up to 16L diesel), and the inclusion of heavy-duty low-profile clamps for easy battery terminal access.
A close-up detail shot of the GEARWRENCH heavy-duty jumper clamps. The image highlights the professional-grade copper teeth and low-profile black and red insulated grips designed for secure connection to automotive battery terminals in tight engine bays.
An action shot of a professional technician in protective gloves using the GEARWRENCH lithium jump starter. The worker is shown connecting the red clamp to a car battery under the hood, demonstrating the tool's portability and ease of use in a shop environment.
A lifestyle shot demonstrating the integrated 300-lumen LED flashlight on the GEARWRENCH jump starter. A worker in black gloves uses the bright light to illuminate the undercarriage and air brake system of a commercial vehicle during a nighttime inspection.
An action lifestyle shot of a technician using the GWLBJ30 unit to jump-start a 12V vehicle engine. The portable battery pack is shown resting on the engine shroud while the professional secures the heavy-duty clamps to the battery posts.
A product kit view showing the GEARWRENCH 12V/24V jump starter alongside its wall charging adapter and USB cable. The unit is shown in a garage setting, emphasizing its readiness as a professional-grade automotive battery maintainer and emergency power source.
A front studio view of the GEARWRENCH GWLBJ30 12V/24V lithium battery jump starter. The portable unit features a durable molten orange and black housing with an integrated carrying handle, an LCD digital display, and side-mounted heavy-duty battery clamps.
A perspective view of the GEARWRENCH 3000 amp jump starter with the red and black jumper cables extended. A graphic overlay indicates the high-capacity lithium battery is capable of 85 plus jump starts on a single full charge.
A technical marketing infographic of the GEARWRENCH portable power bank. Callouts highlight safe operation with seven protective features, the compact and powerful 4.9-pound design, a portable multi-port power bank for smartphones, and a 3-mode LED emergency flashlight.
An infographic showcasing the performance specs of the GWLBJ30 jump starter. Text identifies the 3000 peak amps with maximum starting voltage, the ability to start 12V and 24V gas and diesel vehicles (up to 16L diesel), and the inclusion of heavy-duty low-profile clamps for easy battery terminal access.
A close-up detail shot of the GEARWRENCH heavy-duty jumper clamps. The image highlights the professional-grade copper teeth and low-profile black and red insulated grips designed for secure connection to automotive battery terminals in tight engine bays.
An action shot of a professional technician in protective gloves using the GEARWRENCH lithium jump starter. The worker is shown connecting the red clamp to a car battery under the hood, demonstrating the tool's portability and ease of use in a shop environment.
A lifestyle shot demonstrating the integrated 300-lumen LED flashlight on the GEARWRENCH jump starter. A worker in black gloves uses the bright light to illuminate the undercarriage and air brake system of a commercial vehicle during a nighttime inspection.
An action lifestyle shot of a technician using the GWLBJ30 unit to jump-start a 12V vehicle engine. The portable battery pack is shown resting on the engine shroud while the professional secures the heavy-duty clamps to the battery posts.
A product kit view showing the GEARWRENCH 12V/24V jump starter alongside its wall charging adapter and USB cable. The unit is shown in a garage setting, emphasizing its readiness as a professional-grade automotive battery maintainer and emergency power source.
GEARWRENCH

GEARWRENCH GWLBJ30 12V 24V Lithium Ion Battery Jump Starter 3000 Amp Peak 42000 mAh Portable Power Bank with LCD Display and 300 Lumen LED Flashlight

Only 1 left
SKU: GWLBJ30
$387.99 USD

Description

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The GEARWRENCH GWLBJ30 is a dual-voltage lithium jump starter delivering 3000 peak amps to ignite gasoline engines up to 16 liters. This portable power system combines high-capacity battery performance with integrated safety protections to provide reliable starts for 12V and 24V electrical architectures in temperatures as low as -4°F.

Best Used For:

  • Commercial Vehicle Recovery: Jump starting 12V passenger vehicles and heavy-duty 24V commercial trucks during cold weather electrical failures.
  • Mobile Power Supply: Charging essential tablets, smartphones, and field electronics using the high-capacity 42000 mAh lithium battery bank.
  • Emergency Roadside Assistance: Providing reliable ignition support and high-visibility signaling in low-light environments via the integrated 300-lumen LED system.

Key Performance & Safety Features

  • Dual Voltage Versatility: Engineered to provide instantaneous power for both standard 12V and heavy-duty 24V electrical systems.
  • Massive Capacity: Equipped with a 42000 mAh lithium-ion battery capable of executing up to 85 jump starts on a single charge.
  • Industrial Safety Suite: Includes seven layers of protection including reverse polarity, short circuit, high temperature, and over-voltage shielding.
  • Emergency Illumination: Features a 300-lumen LED light with steady, strobe, and SOS signaling modes for tactical visibility.
  • Operational Monitoring: A backlit LCD display provides real-time feedback on remaining battery percentage and operational status.

What's Included

  • (1) 3000A 12V/24V Jump Starter and Power Bank
  • (1) Heavy-Duty Jumper Cable Set
  • (1) USB Wall Charger
  • (1) USB Charging Cable

Technical Specifications

Key Value
Manufacturer GEARWRENCH
Model Number GWLBJ30
Peak Amperage 3000 Amps
Battery Capacity 42000 mAh
Voltage Compatibility 12V and 24V Systems
Engine Rating Up to 16L Gasoline
Operating Temp -4°F to 140°F
Flashlight Brightness 300 Lumens
Overall Dimensions 9.8 x 9.8 x 3.8 Inches
Product Weight 4.9 lbs
Certifications UL Listed

Pro-Tip: To maintain maximum battery longevity, keep the GWLBJ30 charged to at least 50% capacity at all times and avoid storing the unit in extreme temperatures outside the operational range to prevent premature lithium-ion cell degradation.