Hi, Everyone. I am based in South-Africa, Limpopo, Tzaneen. I have a Deye 8kw inverter connected to 8x Pylontech US3000 batteries, rack mounted. I noticed that one of the batteries seemed skew in the rack, found it is due to swelling. Further inspection revealed that 6 (3 badly and 3 starting) of the 8 batteries are swollen. Battery manufacturing date is 2020-08-26, installed January 2021 by myself. Battery setup/settings are default pylon settings on the inverter, custom settings not possible, at least not from what I can see. Charge and discharge current settings on the inverter are well under the nominal current. Advice needed please. Kind regard Louis