05-08-2019 02:29 AM
What happened to the battery? Based on the User's Guide https://download.lenovo.com/consumer/mobiles_pub/flex_5-1470_5-1570_ug_en_201703.pdf, the battery is built-in. If you need to replace it, you will have to remove the lower case. You may find these videos helpful in removing the lower case and the battery, http://download.lenovo.com/lts/RCNW1540/FOF/RCNW1540-Yoga520-Flex5_REM_FRU_01_LowerCase.mp4 and http://download.lenovo.com/lts/RCNW1540/FOF/RCNW1540-Yoga520-Flex5_REM_FRU_02_BatteryPack.mp4. However, any damage incurred in your laptop will void the warranty.
Hope this helps.