Rechargeable nickel-based (Ni-Cd and NiMH) batteries were standard on older phones.
However, the majority of rechargeable batteries used in phones have become lithium-based in recent years.
Lithium polymer (Li-Po) and lithium-ion (Li-Ion) are the two types of them.
The primary distinction between a liquid lithium-ion battery and a polymer lithium-ion battery is the type of electrolyte that is utilised in both.
Because of their high energy density, lithium-ion batteries can store more charge per unit volume; nevertheless, as they age, even when not in use, they lose charge.
Li-Polymer batteries are safer, lighter, thinner, and have a lower energy density than other battery types. They also hold charge better over time.
Neither lithium-ion nor lithium-polymer batteries are inherently superior to the other; nonetheless, the production of lithium-polymer batteries is both more sophisticated and costly. Typically, manufacturers choose which kind of battery works best with a certain gadget design.
