Built-in battery easy to detach and detaching method thereof

The invention discloses a built-in battery easy to detach. The built-in battery comprises a battery body, a protective layer and a detachment element, wherein the protective layer adheres to the battery body from the back side of the battery body to the front side of the battery body in a wrapping mode, tearing parts are arranged on the four corners of the protective layer, and the protective layer adheres to the battery body in the wrapping mode through an adhesive area arranged on the bottom surface of the protective layer; the protective layer is provided with an opening, and the opening is wider than the detachment element; the detachment element comprises a sticking part and an operation part. The invention further discloses a method for detaching the built-in battery easy to detach. The built-in battery easy to detach and the method for detaching the built-in battery easy to detach have the advantages that structure is simple, assembly is convenient, production efficiency is high, and detachment is easy, quick and convenient during battery body replacement; the outer surface of the battery can be protected, safety and reliability of the battery are guaranteed, the damage rate of the battery is reduced, production efficiency is improved, and loss cost is effectively controlled during mobile phone manufacturing; safety and reliability tests conducted in ways of falling, rolling and impacting after the battery is installed are passed; universality is high.