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

The LOKITHOR J400 is a compact portable jump starter that delivers up to 2000A peak current to start vehicles with up to 8.0L gasoline or 6.0L diesel engines and also charges devices while providing safety protections.

When a car won't start, the J400 is built to get you moving again quickly. This handheld unit combines high-output lithium cells, an easy-to-read display, smart clamp safety, and a bright LED light so you can tackle roadside battery problems, recharge phones and tablets, or signal for help — all from one device that fits in a trunk or garage shelf.

How quickly will the J400 start a dead battery?

The J400 produces a powerful burst of current (up to 2000A peak) engineered for fast engine cranking on large vehicles. Intelligent connection detection optimizes output, improving success rates even when batteries are severely discharged.

• 2000A peak current for strong initial cranking
• Supports up to 8.0L gas and 6.0L diesel engines
• Up to ~25 starts per full charge under typical conditions
• ConnectMax tech auto-adjusts output for reliable engagement

What safety features protect me and my car?

The J400 includes a multi-layer battery management system and smart clamps that reduce user error and protect vehicle electronics. Protections cover reverse polarity, short circuits, overcurrent, and other common electrical faults so you can connect and operate with confidence.

• Intelligent BMS monitors voltage and current constantly
• Smart clamps prevent reverse-polarity connections
• Overcurrent and short-circuit cutoffs for added safety
• Clear alerts and status indicators on the large screen

Can I use the J400 for charging devices and emergency lighting?

Yes — the J400 doubles as a portable power bank and a roadside light source. It provides fast USB charging ports for phones and tablets plus a 300-lumen LED with steady, flashing, and SOS modes so you can stay powered and visible at night.

• Fast USB output for phones, tablets, and accessories
• 300-lumen LED flashlight with SOS and strobe modes
• Useful for camping, travel, and roadside emergencies
• One unit replaces several bulky accessories

What information does the display give me during use?

The J400’s large 5.75-inch display presents real-time data so you understand battery state and connection status immediately. Clear icons and alerts help you confirm a good clamp connection and monitor remaining charge or error conditions without guesswork.

• Real-time battery and output indicators
• Connection and alert messages for safe operation
• Easy-to-read screen improves confidence during jumps
• Helps diagnose if more than a jump is needed

Who is this for: The LOKITHOR J400 is suited for drivers of cars, trucks, and SUVs who want dependable emergency starting power, fleet operators, tow professionals, and outdoor enthusiasts who value a compact, multi-function power solution. It’s an ideal gift for anyone concerned about roadside reliability and for households that prefer a single device to handle jump starts, device charging, and illumination.