Type S Jump Starter Manual|Best Car Battery Starter|Batteryless Design:No batteries inside, ensuring safety and eliminating over-discharge, overcharge, and combustion risks. 3000A Peak Current:Powerful 3000A peak current for instant start-up of 12V gasoline and diesel cars. Smart Clamp with Reverse Polarity Protection:Upgraded relay with reverse polarity protection for safe and reliable jump starts. Smart Digital Display:Clear battery voltage readout on a smart digital display for quick diagnostics. Convenient Leather Handle:Ergonomic leather handle for easy portability and handling in emergency situations.