Setting a new quality standard in portable power, the hähnel 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 hähnel 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-EL14 as an example, recent tests showed that the hähnel battery produced an additional 24% more shots than the original LP-EL14! Hähnel Extreme li-ion batteries not only match the originals but surpass them in performance, durability AND quality.