The Blinky is specially designed for Lithium Polymer Batteries. The Blinky works with 2 to 6 cell Lithium Polymer Batteries. The Blinky first detects all cells that are above 3.2 volts. The Blinky then balances your pack while charging. The Blinky can also balance your pack after being charged. The Blinky will discharge any cell that is over 4.2 Volts.