Afallucco

The amperage draw on the battery is what amounts to the battery life you have. Every electronic device is subject to the physical rules of electronics. At the same power output or watts if you run a higher resistance and voltage you have less amperage draw on the battery than a low resistance low voltage setup. Battery life is all about the draw on the battery referred to as the current or amps.

Take one of the rubber condoms they are packaged with on the ends. Fill up one and slide the bottom of the Carto into it. Then squeeze the rubber a bunch of times the liquid will absorb nicely into the filler material.