Does it invalidate the guarantee if the battery is opened & what do you see inside ?In fact a number of the X6 batteries were actually 4.5 Ah, not 6 Ah, as shown on the cells inside, so that may have accounted for the short range in this instance.
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Did you try ride it before buying? I'm trying find one to try ride. Any ideas?Have just bought a new 2011 Powabyke X6 LSs