High Porosity, Low Resistance

The porosity of a battery separator determines how easily ions can move back and forth between the battery’s anode and cathode.  Higher porosity means freer ion flow with less internal resistance.

In traditional separators, only 35% to 50% porous, ion flow within the cell is often restricted.  As a result, at high discharge rates, only a small fraction of the cell’s energy may be available to power external circuits.  The rest is trapped in the cell or lost to heat.

Symmetrix™ microporous separators use a patent-pending process that yields 80% porosity in a thin, flexible film.  This high porosity reduces resistance within the battery, allowing for faster cell charge and discharge (with no degradation of battery performance), better thermal control, less waste heat and longer cell cycle life.

Cells manufactured with Symmetrix separators yield up to four times more energy at high discharge rates than batteries using traditional separators.