From what i have seen the battery size of both op12 and op13 are identical even the connector pin ( If someone is going to swap OnePlus 12 battery please do try using the carbon silicon battery of OnePlus 13 (especially if you are outside of India, you can purchase the battery from AliExpress for cheap so please do try (There won't be any accidents because the battery has a bms in the top) (Do note that the OnePlus 12 phone will recognise it as 5400mah battery and the battery health won't...Read more