LOKITHOR J400 Portable Jump Starter — 2000A Peak for up to 8.0L Gas / 6.0L Diesel, 5.75” Display & 300-lumen Light

LOKITHOR J400 is a compact, high-power portable jump starter that delivers up to 2000A peak current to start vehicles with up to 8.0L gasoline or 6.0L diesel engines. The J400 combines high-rate lithium cells, a smart battery management system, and a large display to give you confident, repeatable starts and useful emergency features in one handheld unit. Built to be carried in a glovebox or trunk, it offers fast USB charging, a 300-lumen flashlight with SOS, and multiple safety layers so you can handle roadside power needs without guesswork.

How quickly can the J400 revive a dead battery?

The J400 delivers instant high-current output for rapid engine cranking, even from fully depleted batteries. Intelligent connection detection optimizes the output for a faster, more reliable crank while protecting electronics.

• Up to 2000A peak current for strong initial amperage
• Supports up to 8.0L gasoline and 6.0L diesel engines
• ConnectMax auto-adjusts output for efficient starts
• Capable of up to 25 starts per full charge under normal conditions

What safety features prevent mistakes or damage?

The unit incorporates a multi-layer intelligent battery management system and smart clamps to reduce user error and electrical risk. Protections guard against reverse polarity, short circuits, and overcurrent, giving safer operation for any driver.

• Reverse polarity protection prevents incorrect hook-ups
• Short-circuit and overcurrent safeguards protect vehicle and device electronics
• Smart clamps include status LEDs and secure gripping to ensure a correct connection
• Real-time on-screen alerts via the 5.75" display for clear diagnostics

What else can the J400 power besides starting engines?

Beyond jump-starting, the J400 doubles as a mobile power bank and emergency light source. It supplies rapid USB charging for phones and tablets and includes a bright LED torch with multiple modes for roadside visibility.

• Fast USB ports for charging phones, tablets, and accessories
• 300-lumen LED flashlight with steady and SOS modes for emergencies
• Large display shows charge level and connection status while charging devices
• Compact profile makes it ideal for travel, camping, and daily carry

How do I know when it’s ready and what I’m connecting?

The J400’s large 5.75-inch screen delivers clear status information so you can see battery level, connection confirmation, and safety alerts at a glance. Visual feedback reduces uncertainty and speeds up safe operation.

• High-contrast display shows battery percentage and warnings
• On-screen prompts guide proper connection and starting sequence
• Smart clamps with indicator lights confirm correct polarity and contact
• Compact design includes labelled ports for easy charging and use

Who is this for? The LOKITHOR J400 is geared toward drivers, fleet operators, and outdoor enthusiasts who want a dependable, portable power solution without bulky equipment. It suits anyone who needs a compact emergency starter that also charges devices and improves roadside safety—perfect for commuters, families, tradespeople, and travelers who prioritize fast, safe starts and clear device feedback. Backed by a 12-month warranty and rugged components, the J400 is a practical gift and a sensible addition to any vehicle emergency kit.

FAQ

Q: Will the J400 start my diesel truck?

A: Yes, it supports diesel engines up to 6.0L and gasoline up to 8.0L, delivering strong peak current for most passenger trucks and SUVs.

Q: How many jumps can I expect per charge?

A: You can get around 25 starts per full charge under normal conditions; actual count depends on engine size and temperature.