When designs need to be flexible, Lithium-Polymer Batteries are the ideal solution. One advantage is the almost infinite number of sizes since steel housings are not required. A plastic-coated aluminium foil is used instead of such housing. Therefore, very thin cells can be manufactured.
Lithium-Polymer Cells are also a bit lighter than Lithium-Ion Cells. Moreover, the variety of different sizes presents greater freedom in the design of the final product. Custom sizes are available at relatively low production volumes so that the existing space for the battery can be utilized optimally.
Lithium-Polymer cells are negatively affected by overcharging. Therefore, Lithium-Polymer Batteries are provided with a protection circuit that protects them from overcharging. These batteries should only be charged with chargers specified for that battery’s chemistry.
Lithium-Polymer cells are also called soft or pouch cells.