12-19-2017 06:20 AM
I would suggest the same 6 cell battery (Li-ion battery (6 cells) 2200 mAh) designed for the machine.
Hardware manual list item 14 page 74-75 as the best battery intended for the machine.
It is already 6 cell and that you will not have an issue with BIOS recognition of the battery.
There are no better battery that what you currently have the OEM designed for both capacity and performance.
You can use the parts lookup page for compatible OEM battery part number.
Hope this help answer your query.