Don1 and gossamer88, my understanding was that the R6 will not give the maximum burst rate with the N version, whether Canon or off-brand. I've also read that the BM H is read by the R6 as an N (i.e., doesn't allow max burst...as indicated in the viewfinder by the red rather than green icon). I'd certainly buy the BM if it allowed the max burst. Thanks.
LP-E6N does give full 12 Fps burst (at least as indicated with green H+). From certain lower percentage of the battery it turns white.