We've got several Dell E6330 Latitude laptops with both a primary and a modular bay battery installed. (We manually installed the bay batteries after receiving the units)
We began powering on the units and went to the bios to check out various settings. Surprisingly, on many of these units, the Battery Information screen in BIOS only shows (1) battery, the primary one. We became concerned when more and more of the units did not display the attached second bay battery
However, THE FIRST TIME you attach an ac adapter to the unit, while viewing the Battery Information BIOS screen, within 2-3 seconds, the second bay battery pops up and is displayed in the bios screen. We then restart the unit without an ac adapter and the 2nd battery still shows both in BIOS and in Windows.
I'm trying to find out why it took attaching an ac adapter to seemingly 'activate' the bay battery.