LOKITHOR J400 Portable Jump Starter — 2000A Peak for up to 8.0L Gas / 6.0L Diesel, 25 Starts, LED & USB

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.

The J400 combines powerful lithium cells, a clear smart display, and multi‑layer safety controls in a compact package designed for roadside readiness and everyday convenience. Built to provide up to 25 starts per charge and featuring fast USB ports plus a 300‑lumen LED with SOS mode, it’s engineered to be both a vehicle power tool and an emergency multi‑tool for drivers and outdoor enthusiasts.

How does the J400 jump start dead batteries reliably?

LOKITHOR pairs an 80C high‑rate lithium battery with ConnectMax intelligent detection to deliver strong, rapid current while automatically optimizing output for a secure connection. The unit supplies a large peak surge for initial cranking and stable sustained current to complete the start.

• Up to 2000A peak current for instant starts
• Supports up to 8.0L gas and 6.0L diesel engines
• Up to 25 starts per full charge for repeated use

What safety features protect my vehicle and me?

Safety is managed by an integrated battery management system (BMS) and smart clamps that monitor connection status and electrical conditions. Protections include reverse‑polarity, short‑circuit, overcurrent and overcharge prevention, reducing the risk of damage or misuse.

• Intelligent BMS monitors voltage and temperature
• Smart clamps detect polarity and prevent reverse connection
• Multiple built‑in protections for safe operation

What extra tools and ports does the J400 include?

Beyond jump‑starting, the J400 functions as a compact power bank and emergency light. It offers fast USB charging for phones and accessories and a bright 300‑lumen LED with steady, strobe and SOS modes to aid nighttime checks or signaling.

• Fast USB output for rapid device charging
• 300‑lumen LED flashlight with SOS and strobe settings
• Large 5.75" smart display for real‑time status and alerts

How do I know when the J400 is ready or needs attention?

The front-mounted 5.75‑inch smart display shows battery condition, connection guidance, and fault warnings in plain, readable icons and numbers. This real‑time feedback helps you confirm a proper connection and troubleshoot basic issues instantly.

• Clear battery percentage and status indicators
• Connection and safety alerts shown on screen
• Simple on‑screen prompts to guide safe operation

Who is this for? Drivers who want dependable emergency starting power without bulky equipment will value the J400: commuters, road‑trip lovers, rural drivers, and small‑truck or SUV owners with engines within the supported range. It’s also a practical gift for family members or friends who need a reliable, multi‑purpose roadside tool that doubles as a power bank and emergency light. Every J400 includes the unit, smart clamps, charging cable, user guide, and a 12‑month warranty from LOKITHOR for straightforward setup and confidence on the go.