Despite having a limited energy supply, more and more hand-held devices and IoT applications rely on actuators. And while a bigger battery has some benefits, it’s the ones with a low cell count that are preferred by device manufacturers for cost, reliability, size and weight, safety, and other reasons. Whether it’s for home automation, security, medical, or handheld POS devices, batteries with a voltage range of 2.4-4.3 V seem the way to go.