iATKOS | United Kingdom

So I installed macOS on my laptop and everything is running fine. Everything is fully functional and there are no issues until we get to the Battery Life. At 100% Charge, my laptop dropped to under 10% in a little over an hour of use in class and needed to be plugged in. I tried looking up fixes but nothing has worked. My laptop is the Dell Inspiron 15 5570 I couldn't find the Model Number on Dell's site anymore but I found it here on Best Buy where I bought it https://www.bestbuy.com/site/dell-inspiron-15-6-laptop-intel-core-i5-8gb-memory-1tb-hard-drive-silver/6258081.p?skuId=6258081&intl=nosplash

Any and All help is appreciated.