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Lithium-polymer laptop batteries

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The laptop battery market is dominated by lithium-ion cells. However, many battery manufacturers are increasingly adopting lithium-polymer cells in the designing of laptop batteries. The chemistry and the technologies applied allow the manufacturers to come up with a wide selection of cell geometries. A lithium-polymer laptop battery contains an array of cells that are interconnected to produce the required power.

The cost of manufacturing lithium-polymer cells is lower than that of lithium-ion. Nevertheless, the industry adoption of these batteries has been slow. One of the main causes of this slow adoption is the lower capacity of lithium-polymer cells.

Pros 

i.                     Light weight. Lithium-polymer batteries use gelled electrolyte which does not require metal casing.

ii.                   Flexible form factor. Unlike in the case of lithium-ion batteries, manufacturers are not limited in the number of formats that they can use.

iii.                  Safety. Chances of electrolyte leakages are usually low and the batteries also have higher resistance to overcharging.

Cons

i.                     Lower energy density as compared to lithium-ion batteries.

ii.                   The cost-to-energy ratio for lithium-polymer batteries is higher than that of lithium-ion.

iii.                  No standard sizes. Unlike lithium-ion, there are no standard sizes for lithium polymer cells.

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