Ammonite Accu Click Mount
The whole system contains two parts, accumulator clamp made of Delrin fixed on a battery housing and titanium plate placed on a waist belt on the harness.
By using Accu Click Mount the battery might be easily placed as last part of the equipment just by placing the clamp pin in a titanium plate slide and pushing the battery down until you hear the click sound.
The battery taking off is also very easy. Just pull it up and take it out from the plate.