Hi guys, ive had a few probs with my hopper recently that have me stumped, i spotted the problem after spending most of a session chopping balls, i brought a 10 pack of procells, i fitted one and used the hopper, just a week later used it again to find the hopper barely working and guessed i left it turned on and the bettery had died but after further inspection im left very confused as out of the 10 new batteries 5 spin it up fine but 5 barely turn the drive at all, yet all batteries read new on my tester and are less than a week old, anybody have any idea how this can be? any help would be great on this, thanks a lot, daz