In the past, rechargeable nickel-based batteries were used in mobile phones (Ni-Cd and NiMH).
Yet, during the last several years, lithium-based rechargeable batteries have become more prevalent in phones.
Lithium-ion (Li-Ion) and lithium polymer are the two options (Li-Po).
The use of various electrolytes makes the main distinction between a polymer lithium-ion battery and a liquid lithium-ion battery.
As lithium-ion batteries have a high energy density, they can store more charge per volume. Nevertheless, even when they are not in use, they lose charge over time.
Although Li-Polymer batteries have a lower energy density, they are safer, lighter, thinner, and keep their charge better over time.
There is no clear winner when it comes to lithium battery technology because lithium polymer batteries are more sophisticated and substantially more expensive to produce than lithium ion batteries. Typically, manufacturers choose which battery type is best for a certain gadget design.
