This season I ran too back to back 25 minute finals on a 1600mah Niamh pack without any charge in between. Last year I managed 2 x 30 minute finals back to back and then being hopeful I tried a 3rd and it died 5 mins in.

On a normal race day I am happy to run 4 x 5 min qualis on 1 charge and then give it a boost before the finals.