This one is the correct one [URL] works perfectly. 
I am trying to find a replacement battery for this laptop. The one I have removed from it is a Type 357F9 (11.4V/74Wh Li-Ion). All the replacements I can find online seem to be 11.1V. Is it possible that Dell put the wrong battery in when it was assembled (11.4 instead of 11.1), or is there another reason why this battery model has changed from 11.4 to 11.1 since I bought it in 2018? Any advice, especially from Dell would be appreciated. I am nervous about putting an 11.1V battery into a laptop designed for an 11.4V one (maybe). Cheers
Inspiron 15 5000 (5577) Gaming Laptop Battery voltage