M18- 2x 5aH or 1x 9aH?

[RStock521]

Home Depot and Grainger have the same thing.  It's $299 for three batteries and the hammer drill.
2704-22-48-11-1850  The "-48-11-1850" is the third battery.

https://www.homedepot.com/p/Milwaukee-M18-FUEL-18-Volt-Lithium-Ion-Cordless-Brushless-1-2-in-Hammer-Drill-Driver-Kit-with-Free-M18-18-Volt-XC-5-0Ah-Battery-2704-22-48-11-1850/206581415?MERCH=REC-_-rv_search_plp_rr-_-NA-_-206581415-_-N

Acme Tools had this kit for 20% off on black friday.  $239, killer deal.