NB: THERE ARE 2 DIFFERENT VERSIONS OF THE BATTERY IN QUESTION, THAT IS, THE ATTACHMENT FLAT WOULD BE SHORTER OR SLIGHTLY DISPLACED, THEREFORE IT IS NECESSARY TO DESOLDER THE ENTIRE BATTERY PCB AND PLACE IT CORRECTLY IN THE DESIRED POSITION. BATTERY BP42 FOR XIAOMI MI 11 LITE M2101K9AG 4250 mAh QUALITY EQUAL TO ORIGINAL ATTENTION PRODUCT WITHOUT XIAOMI LOGO