There are different charging methods for Autwoit Supercapacitor Jump Starter, with different recommended charging time.


1. Pre-charge with car batter.


VoltagePre-charge Time
>10V1-1.5 minutes
>6V3 minutes
>4V10 minutes


2. Pre-charge with 12V socket: 2-3 minutes. 

3. Pre-charge with USB power source: 20-40 minutes.