[Al Skierkiewicz]

Just another marketing department ploy it would seem. When a manufacturer sheet doesn't give you all the details it is impossible to know. Both batteries do not meet the max current specifications of other batteries but they also do not specify the max current vs. time that the other sheets specify. The only clear differences are the weight which is slightly higher for the HR version and the internal resistance which is 15 mohms compared with only 11 for MK batteries. It is unlikley that the HR version is significantly different in performance than the standard version for our use. I suspect the graphs are the same as this is an industry standard 18AH battery which must conform to those criteria. It is the same as the published sheets for other manufacturers. I suspect that the tie up at HQ is that many people are on the road at events these days. Competition season is tough on these guys.