DSTE 2x LP-E6 Li-ion Battery for Canon EOS 5D Mark II, EOS 5D Mark III, EOS 6D, EOS 5DS, EOS 7D, EOS 60D, EOS 60Da, EOS 70D cameras as LP E6N (Camera) 4
I bought the double package for use as a spare battery or for use in the battery grip. Once fully charged, the battery lasted for a 3-hour stage show for about 1500 photos (with no greater image control on the display) Freely. The performance over a longer period I can not judge, but the battery should hold only 2-3 years, then the price for a new purchase still justified and no problem. For environmental reasons, however, this is already a problem, since batteries are counted as special waste!