Setting a new quality standard in portable power, the h?hnel extreme li-ion batteries deliver additional capacity, extra performance,supreme durability & ultimate reliability. We have pushed the boundries with these new batteries & firmly believe that the are the very best quality that money can buy. Each battery is injected with silicone giving them a very tough, shock absorbing construction with superior circuit protection & additional electrical insulation. We have carefully selected the best ul approved cells to ensure an extended life cycle, performance & safety. the h?hnel extreme li-ion batteries are built to withstand the tough environments professional & semi- professional photographers face when used in extreme field conditions using the hlx-e6 as an example, recent tests showed that the h?hnel battery produced an additional 24% more shots than the original lp-e6! h?hnel extreme li-ion batteries not only match the originals but surpass them in performance, durability and quality.