Key Features

• •【Smart Jump Starter and Battery Tester】This jump starter delivers up to 2500A peak starting current to start 12V vehicles (up to 8.5L gas / 6.5L diesel). Works as a car battery jump starter and battery tester, supporting motorcycles, trucks, RVs, SUVs, boats & more—helping extend battery life and reduce repair costs.
• •【User-Friendly Battery Tool】Features built-in Bluetooth 5.3 for real-time battery monitoring via a mobile app. It supports battery health, cranking, and charging tests, real-time voltage monitoring. The JT400 digital battery analyzer delivers key data such as SOH (State of Health), SOC (State of Charge), voltage, current, and rated capacity — helping you pinpoint why your car won't start. Get fast, accurate insights and save valuable time
• •【Wide Battery Compatibility】This alternator tester is compatible with most batteries (100–2000 CCA), including Flooded, AGM Flat Plate, AGM Spiral, GEL, and EFB types. Supports multiple testing standards: CCA / SAE / EN / DIN / IEC, ideal for DIY users, home mechanics, and vehicle owners.
• •【Extreme Safety Protection】Equipped with an advanced BMS and smart self-identifying clamps for fully insulated and reliable operation. Features 10 comprehensive protections, including Spark-Proof, Reverse Polarity, Over-Charge, Over-Current, Short-Circuit, Low/High Temperature, Over-Voltage, and Over-Load protection—ensuring safe and confident use.
• •【ConnectMax Technology for Faster Starts】Automatically detects the connection impedance between clamps and battery, optimizing power delivery and improving the success rate of vehicle starting, even in challenging conditions.
• •【Portable Power Bank & Emergency LED Light】The two-way charging ports power smartphones, tablets and more. The built-in LED flashlight features 6 modes (100%, 50%, 10%, blink, SOS and strobe), making it an essential emergency tool for road trips and outdoor use.
• •【Packing List & 7×24 Customer Servies】JT400 jump starter ×1, Jump clamps x1, User Manual x1, USB-A to USB-C cable x1, Product Storage Bag x1 and 12-month Warranty, If you need any help, please feel free to contact us.