Yes, lithium polymer (LiPo) batteries do exist and are widely used in various applications today. They are a type of rechargeable battery that uses a flexible, pouch-like packaging instead of the rigid cylindrical or prismatic casing used in traditional lithium-ion (Li-ion) batteries.

Here are some key characteristics of lithium polymer batteries:

1. Flexible Packaging: LiPo batteries use a flexible pouch or bag made of aluminum-plastic composite material. This flexible packaging allows for more freedom in shaping and sizing the battery, making them suitable for applications where space and weight are critical factors.
2. Energy Density: LiPo batteries offer competitive energy density, meaning they can store a significant amount of energy relative to their size and weight. This makes them popular in devices such as smartphones, tablets, drones, RC vehicles, and other portable electronics.
3. Performance: LiPo batteries can typically handle higher discharge rates compared to some other types of Li-ion batteries, making them suitable for applications requiring quick bursts of power.
4. Safety Considerations: While LiPo batteries are generally safe when handled properly, they require careful charging, storage, and handling to mitigate risks associated with thermal runaway and other safety concerns.
5. Applications: LiPo batteries are used in a wide range of applications, including consumer electronics, electric vehicles (particularly in smaller applications like electric bicycles), drones, RC vehicles, and wearable technology.

Overall, LiPo batteries provide flexibility in design, competitive energy density, and suitability for various high-performance applications. They have become a popular choice where their specific advantages meet the needs of modern portable electronics and other specialized applications.