The "BM5291" is likely a proprietary board model number assigned by an OEM (Original Equipment Manufacturer) such as BOE, LG Innotek, or a Chinese power supply specialist. The "ver 1.3" indicates the third major revision of the PCB layout, which often implies:
At the heart of the BM5291 Ver 1.3 schematic lies the Battery Protection IC. While the markings on the chip may be sanded off or obfuscated on generic boards, these typically function similarly to the classic or the HY2110 series.
If you have access to the schematic or the project documentation, a complete report would generally cover: bm5291 ver 1.3 schematic
Assuming U1 is an (common in ver 1.3 designs):
Below is a (since an image can't be rendered here, components are listed logically). For a visual, search "BM5291 ver 1.3 circuit diagram" on electronics forums. The "BM5291" is likely a proprietary board model
To get the actual schematic and create a report:
In the schematic, this IC is connected to three critical points: If you have access to the schematic or
laptop. In professional repair contexts, "completing a paper" on this schematic usually involves gathering the schematic diagram boardview file required for component-level troubleshooting Lenovo IdeaPad S215 (BM5291 Ver 1.3) Specifications