Jak and Daxter: The Precursor Legacy

I know this may seem confusing because my first time getting this one was hard to find but all you have to do is there is one of those guys with that huge machine hitting the ice go to the right of it and you will find platforms moving up and down and there will be some trees to the side with just enough room for you to squeeze through there will be some obstacles to get through step on the little button and not only will you get that powercell but you will unlock a yellow eco thingy which will allow you to get a poercell back at the mountain pass i hope this helps (: