How to use the 12V/24V Multi-function Car Jump Starter :

Special note:

To start 12V/24V vehicle, please make sure the number of LED indicator is no less than 30% , then connect the Red battery clamp to the battery Positive (+) and Black clamp to the battery Negative (-) and insert the plug into the jump starter, finally turn the ignition switch to the START position. Once the vehicle is started, please disconnect the plug and remove the battery clamps within 30s. 

Product Highlights:

Use fast charging and low self-discharge, cycles can reach 1000 times. 
Support 12V/24V vehicle for emergency start, portable illumination and various mobile phone, PSP, MP3/MP4 Pocket PC PDA, laptop as well as other products charge / power supply;

Capable of cranking 12V/24V displayV8 15.0Lengines(diesel up to 12.9L)