The connection head of SM901has an inner hole diameter of 5mm/0.2″,please check the size chart picture carefully before making an order. We will not take the responsibility if it does not fit your lithium jump starter. In order to cut down cost, there are poor quality jump starters in the market now making their battery capacity lower but making the instant output voltage to 14V or higher in order to show their battery juice "robust" to jumping, but this "robust" is deceiving and dangerous, as we know, a normal car battery output voltage is 12.6V, the normal alternator output is between 13.5V-13.8V, XINCOL SM901 Clamp's protection only active for voltage between 10.5V-13.8V. If the output voltage is too high this will damage the car battery and motor. We recommend you buy quality lithium jump starters from companies have a good reputation. SM901 clamp definitely applies all XINCOL jump starters series like X6,X7,X8,X9,X10.
Reverse -charge Protection
Short-Circuit Protection
Over-temperature Protection
Reverse Polarity Protection
Over-charge Protection
Usage of Car Jump Starter:
Connect the clamps to the vehicle battery first, and then plug the clamp EC5 into the socket of the jump starter and then start the vehicle.

Cautions:

1.Only applies to 12V 4.0-liter gasoline vehicle or less.
2. Do not try to boost if the power of jump starter is low, don't crack several times if your first boost is failed. Stop trying, charge your jump starter and try again after some time.
3. Do remove the product from the vehicle within 30 seconds after the vehicle started.
4.Charge your jump starter more than 5 hours and less than 8 hours every time before use because its LED indicator power is not always accurate.
5. This clamp is just a connection accessory, we are not responsible for failed boost caused by other reasons.