Silva Extension Cable, for Silva Connection system – The long cable from SILVA enables you to move the battery to a pocket, your backpack or bicycle handlebar. It also gives you the opportunity to switch to a long-lasting battery with more capacity.
The colder it gets the less battery capacity.
The battery capacity could depend on your body heat as well as the outside temperature. The long extension cord from SILVA gives you the option to carry the battery close to your body. This could be crucial in many ways. Keeping the battery as warm as possible in cold weather extends its burn time.
Water resistance: waterproof