LOKITHOR JT400 Portable Jump Starter 2500A — Bluetooth Battery Tester & Power Bank for 8.5L gas / 6.5L diesel

The LOKITHOR JT400 is a compact 2500A portable jump starter that also functions as a Bluetooth-enabled battery tester and power bank for 12V vehicles up to 8.5L gas or 6.5L diesel.

Designed for drivers, home mechanics, and outdoor enthusiasts, the JT400 combines a high-peak current starter with multi-standard battery diagnostics and emergency power features. Its Bluetooth 5.3 connection streams live battery data to your phone, while onboard protections and smart clamp detection make roadside boosts safer and more reliable. The unit also doubles as a USB power bank and multi-mode LED light, turning a single device into a versatile emergency kit.

How does the JT400 start larger engines so reliably?

The JT400 delivers up to 2500A peak current and uses ConnectMax technology to sense clamp-to-battery impedance and optimize power delivery. This increases the chance of a successful start even when batteries are weak or connections are less than ideal.

• 2500A peak starting current for quick cranking
• Supports engines up to 8.5L gasoline and 6.5L diesel
• ConnectMax automatic clamp impedance detection
• Smart self-identifying clamps for correct, safe connection

What battery tests and live data can I see with Bluetooth?

Using the BT 5.3 link and the LOKITHOR app, the JT400 reports key battery metrics like SOH (State of Health), SOC (State of Charge), voltage, current and rated capacity. It runs cranking, charging and health checks across common test standards so you can understand battery condition before you drive.

• Real-time voltage and current monitoring via mobile app
• SOH and SOC readouts for long-term battery planning
• Supports CCA / SAE / EN / DIN / IEC testing standards
• Works with Flooded, AGM, GEL, EFB and spiral batteries

What safety features protect me and my vehicle during use?

The JT400 integrates an advanced battery management system plus ten safety protections to reduce user error and electrical faults. Features such as spark-proof clamps and reverse polarity protection prevent accidental damage during connection, while temperature and over-current limits protect the unit itself.

• 10 protections: reverse polarity, short-circuit, over-current, over-charge
• Spark-proof clamps and full insulation for secure handling
• Low/high temperature and over-load detection
• Automatic clamp identification and BMS oversight

How does the JT400 serve beyond jump-starting?

Beyond starting vehicles, the JT400 functions as a portable power bank and emergency light. Dual USB-A and USB-C ports support charging phones and tablets, while the built-in LED offers multiple modes for visibility and signaling in roadside or outdoor situations.

• USB-A and USB-C two-way charging for phones and accessories
• LED flashlight with 6 modes: full, half, low, blink, SOS, strobe
• Compact storage bag and cable included for easy carrying
• Rechargeable unit — tip: keep above 30% battery for reliable boosts

Who is this for? The LOKITHOR JT400 is aimed at car owners, fleet drivers, DIY mechanics, and outdoor adventurers who want a single, dependable device for jump-starting, battery diagnostics, and emergency power. It’s particularly useful for owners of larger engines (up to 8.5L gas / 6.5L diesel) and for anyone who values in-the-moment battery insight via Bluetooth. Packaged with clamps, a USB-A to USB-C cable, a storage bag and backed by a 12-month warranty, it’s a compact addition to glove boxes, trunks, and emergency kits.