Before buying, check inside the system to be sure a larger battery will fit inside.  While it will work electrically, the 4-cell battery is larger than the 3-cell you now have, and there have been cases where there chassis has a molded in ridge that would either need to be trimmed or removed to fit the larger battery. You can also check with parts-people.com -- they can look up compatibility by service tag.  
I have Latitude 7480, which originally had DJ1J0 of 42WH battery and have 11.4V, I was looking for 60 WH battery which is F3YGT has 7.4V,  can I use F3YGT on my 7480 latitude? or has anyone changed their battery like this?  
can we use F3YGT instead of DJ1J0 battery