What is a smartphone battery? A smartphone battery (cell phone battery, accumulator) is the main source of power for this device. Types of cell phone batteries. Nickel-cadmium (NiCd) batteries NiMH (NiMH) batteries Lithium-ion (Li-ion) batteries Lithium Polymer (Li-pol) batteries Talking about battery capacity, it is a measure that indicates how much electricity this battery can … Read moreBattery