Which is a better battery for a smartphone Li-Ion or Li-Po?

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https://www.quora.com/Which-is-a ... one-Li-Ion-or-Li-Po

I just found out that:
Lithium is the lightest metal.
Lithium also has the highest electric potential - meaning the highest potential voltage?

Lithium ion is:
Higher in energy density.
Cheaper to manufacture.
But:
Heavier.
More rigid in shapes and styles.
More internal resistance, for slower discharging, and lower amperages.
Has greater aging, even if not used for 1 year.
More explosive, so requires an IC circuit.

Lithium polymer is:
Lighter.
Moulderble, and flatter shapes.
Less internal resistance for faster discharging and higher amperages, at up to 65C continuously, or 135C in bursts!!!
By comparison, a typical RCR chemistry 18650 can only discharge at up to 5.8 amps.
While an IMR chemistry 18650 at 2000 mAH will discharge at up to 10 amps, though an IMR chemistry 18650 at a puny 1600 mAH can discharge at up to 15C, but for the diminished capacity.
Has less self aging, even if not used.
Less explosive, so no IC circuit required.
But:
Less energy density.
Expensive to manufacture.


Thus, LiPo is used in radio controlled cars for their lighter weight and faster discharge rates, for massive amperages, for more power.
LiPo is used in mobile phones especially for their flatter shape, and their lighter weight.
While Lion is used in flashlights for their greater energy density for longer run times.

18650 battery also called lithium-ion batteries. As is commonly known by everyone, the lithium cobalt oxide is the liquid lithium ion battery, of which the common type is 18650 and square shapes. 18650 battery is 18 mm in diameter and 65 mm in height, widely used as laptop batteries. On account of being used universally with laptop battery, more than sixty percent of the mobile power uses 18650 batteries in today’s market. It has a wide range of application and portable size, the techniques are matured increasingly. More about 18650 battery.

Lithium iron phosphate can be called scientifically as ferroelectric. Compared with other batteries, the biggest difference is the addition of iron element in the positive pole of the battery. Lithium iron phosphate is still in its infancy in recent years and it is a kind of potential material, its safety performance and cycle life is unmatched by other materials, and these are also the most important technology index of power battery. Lithium iron phosphate is non-toxic, good in safety performance and of no pollution. It has multiple sources for raw material and long service life, what more, the price is cheap. It is the ideal of anode material in a new generation oflithium ion battery.

Li-Polymer battery are made of soft aluminum-plastics compound packaging .Internal is half solid polymers.Discharge stability, high efficiency, the internal resistance small.safety performance is better, and has overcurrent, overvoltage protection devices. Cycle life is more than 500 times. More about Li-Polymer battery.

There are no protection circuit in 18650 Li-ion battery, that is the biggest difference with Li-Polymer battery. As long as 18650 Li-ion battery power bank used equal brand and the same capacity (such as Sanyo, Samsung or Panasonic), the battery life is not too much difference. The protection circuit is designed in power bank shell, so need put power security design of power bank in place.

In a word, each battery has their advantages and disadvantages. Li-Polymer batteries’ safety performance is better, of course its price is higher than 18650 li-ion battery in the same capacity. 18650 li-ion battery capacity can be higher than Li-polymer battery, if its protection circuit is designed perfect, the 18650 Li-ion battery power bank also is a high cost-effective choice.

The structure, the lithium polymer battery ‘s full name should be lithium-ion polymer battery , so it seems , is actually a lithium polymer battery lithium ion battery . The biggest difference between the two is only used within the type of electrolyte , a lithium -ion battery is a liquid electrolyte , and lithium ion polymer batteries instead places the solid polymer electrolyte , the polymer may be a solid, can be is a semi-solid ( gel ) is .

The appearance, the majority of currently available mobile power are sold using a cylindrical ( ie 18650 ) lithium-ion battery or two batteries lithium polymer block . So when we pick mobile power , especially if the product packaging does not indicate the type of batteries used , then you can simply by the thickness of the product itself to be a general understanding of the use of its internal battery type.