Jump Starter Lokithor J3250 Pro 3250 A, 74.24 Wh Portable Car Jump Starter

The Lokithor J3250 Pro is a portable 12V jump starter with a 74.24 Wh LiFePO4 battery and a peak cranking current of 3250 A. It is designed to start gasoline engines up to 9.5 L and diesel engines up to 7.5 L, and also functions as a 100W power bank with bidirectional fast USB-C charging. The unit combines long battery life, multiple safety protections, and weather-resistant construction for use in everyday driving and emergency roadside situations.

Advantages

The device uses LiFePO4 chemistry, which provides up to 8,000 partial-charge cycles and a very low self-discharge rate, keeping the unit ready for long periods. With a 3250 A peak output it can start a wide range of vehicles; built-in 100W USB-C bidirectional charging allows both fast recharging of the starter and quick charging of connected devices. The starter includes multiple output ports, a 400-lumen LED flashlight with strobe and SOS modes, and an IP65-rated housing for resistance to dust and water.

Suitable for

• Starting passenger cars, SUVs, pickups and some commercial vehicles
• Emergency roadside assistance and jump-starting drained batteries
• Powering and charging phones, tablets and laptops via USB-C/USB-A
• Outdoor use in varied weather thanks to IP65 protection

When it may not be suitable

The J3250 Pro is not intended for use as a continuous vehicle power supply; it is designed for occasional starting and portable charging. For professional heavy-duty or continuous commercial vehicle power needs beyond the stated gasoline (≤9.5 L) and diesel (≤7.5 L) limits, a higher-capacity jump starter or dedicated service equipment may be more appropriate.

Key specifications

• Battery type: LiFePO4
• Battery capacity: 74.24 Wh (approx. 5800 mAh)
• Peak cranking current: 3250 A
• Output ports: USB-A 12V/1.5A (18W), USB-C 5–20V up to 5A (100W), DC 12V/10A
• Bidirectional charging: USB-C 100W (input/output)
• AC/DC input (for charging): DC 20V/5A 100W
• Operating temperature range: -20°C to 60°C
• Protection rating: IP65
• LED flashlight: 400 lumens with strobe and SOS modes
• Standby/self-discharge: approx. 42 months (0.66 mAh)
• Dimensions: 10.67 × 3.78 × 8.34 inches

How to use

Before use, ensure the jump starter is charged. In standard mode connect the supplied clamps to the vehicle battery terminals (observe correct polarity), power on the unit and attempt to start the engine. If vehicle battery voltage is very low, use Boost mode following the manufacturer’s instructions. Use the USB or DC outputs to charge devices or power accessories; use the USB-C port for the fastest recharge of the unit itself.

What to consider before purchase

• Verify the vehicle engine size does not exceed the stated limits (gasoline ≤ 9.5 L, diesel ≤ 7.5 L)
• Consider whether you need continuous or professional-grade power beyond jump-starting
• Check that included cables and accessories meet your needs (clamps, USB cables, 12V adapter)
• Allow for the device dimensions and storage space in your vehicle

Usage recommendations

Keep the Lokithor J3250 Pro charged and store it in a dry place; inspect clamps and cable connections for corrosion or dirt before each use. Follow the user manual for polarity checks and Boost mode procedures, and avoid using the device outside its operating temperature range for reliable performance.