Motor Mover and battery life (Sterling Quartz)

masonst0rm

I have a sterling quartz caravan (2012) with a Reich caravan motor mover on it but when I use the motor mover it only works for about one min or so, the battery is less than a year old and is 110ah which is about as big as I can get but the useage time seems
realy. What are your views does this sound low or about right or any suggestions on how to extend the usable life would be appreciated.. Many Thanks