> So we break it out into two separate, and unequally important properties for these consumers. The important property being voltage. If the voltage is the same

> So we break it out into two separate, and unequally important properties for these consumers. The important property being voltage. If the voltage is the same, the battery can be considered by consumers to be "compatible" with their device. If the mAH is greater, they will have more battery life. Lower, and they will have less battery life. It works exactly the same way if you replace mAh with wh.