What does the starting amperage, listed on my jump starter, refer to? Support December 10, 2020 21:38 Updated Follow Please consult the chart for more information: Amperage Listed Amperage Provided (Amps) Time Duration (seconds) 300 Instant Amps 300 1* 450 Instant Amps Related articles What is the difference between cold cranking and cranking amps? What is the amp hour of the LB20, LBX20 and LBXR20 batteries? What is my ASI300 air station inflator intended to inflate? Comments 0 comments Please sign in to leave a comment.