LOKITHOR J400 Portable Jump Starter — 2000A Peak, for up to 8.0L Gas & 6.0L Diesel, Power Bank & 300‑Lumen Light

The LOKITHOR J400 is a compact, high-output portable jump starter that delivers up to 2000A peak current to start vehicles with up to 8.0L gasoline or 6.0L diesel engines while doubling as a power bank and emergency light.

Packed with high-rate lithium cells, intelligent safety controls, and a large, easy-to-read display, the J400 is designed to get a dead battery going quickly and safely. It combines heavy-duty starting performance with USB charging ports and a 300-lumen LED flashlight, making it a practical roadside tool and a versatile emergency power source.

How quickly will the J400 start my car?

The J400 delivers up to 2000A peak current and uses 80C high-rate lithium cells for fast energy delivery, enabling rapid starts even from deeply discharged batteries. With up to 25 starts per charge (depending on vehicle and conditions), it’s reliable for extended use away from power.

• 2000A peak current for strong cranking power
• Supports up to 8.0L gas and 6.0L diesel engines
• Approximately up to 25 starts per full charge
• High-rate 80C lithium cells for faster power output

What safety features protect my vehicle and me?

Safety is handled by an intelligent battery management system (BMS) and smart clamps that monitor connection and electrical conditions. The unit includes protections for reverse polarity, short circuit, overcurrent, and other common risks to reduce the chance of damage during a jump start.

• Built-in BMS for voltage, current, and temperature control
• Reverse polarity protection prevents incorrect connections
• Short-circuit and overcurrent safeguards for secure operation
• Smart clamps that detect and optimize the connection

What else can the J400 do besides jump-starting?

Beyond starting engines, the J400 functions as a multi-purpose power bank and emergency light. It includes fast USB ports to recharge phones and devices, and a bright 300-lumen LED with SOS mode to improve visibility during roadside incidents.

• Fast USB charging ports for phones, tablets, and accessories
• 300-lumen LED flashlight with adjustable modes and SOS signal
• Large 5.75-inch display shows battery status and alerts in real time
• Compact design stores easily in trunks or glove compartments

How do I know it’s ready and working?

The J400 features a sizable 5.75-inch display that provides clear readouts of battery charge, connection status, and warning alerts so you can act with confidence. Connect the smart clamps as directed and follow on-screen prompts to confirm a safe, effective jump-start sequence.

• Large, readable screen for status and alerts
• On-screen guidance reduces user guesswork during use
• Automatic connection detection optimizes output for safer starts
• Comprehensive indicator set for battery and clamp condition

Who is this for? The LOKITHOR J400 is ideal for drivers, fleet operators, outdoor enthusiasts, and anyone who wants a compact, dependable emergency starter and power source. It suits owners of larger gasoline or diesel vehicles who need robust cranking power, as well as commuters and travelers who value built-in USB charging and a bright emergency light. Backed by a 12-month warranty and designed for gifting, it also makes a practical present for new drivers, frequent travelers, and households preparing for unexpected roadside situations.