Err… I have NO clue. I bought this laptop with the SSD already in it, and I only really used it on battery on my flight to Korea. I was however very impressed compared to my previous laptop. I didn’t get the extended battery on it, cause I hate how it sticks out, so I just have the basic one.
I C&P’d this from my order confirmation.
Latitude E6500 Laptop: Intel Core 2 Duo P8400 (2.26GHz, 3M L2 Cache, 1066MHz FSB)
256MB NVIDIA Quadro NVS 160M
8X DVD ROM Drive
Back-lit Keyboard
2 GB DDR2 SDRAM 800MHz (2 DIMMs)
90W AC Adapter
Internal 56K Modem
125V Power Cord
6 Cell Primary Battery
64 GB Solid State Drive, 2.5MM
15.4 inch Ultra Sharp Widescreen WUXGA Laptop Screen
On my flight to Korea, I got to sit next to the VP of Sales & Special Markets for Centric, Stoptech & Powerslot. I watched Wolverine on my laptop with him, and I still had more than half my battery left. Then I met some Japanese chick at LAX, and I watched 2 1hr episodes of this Jap drama that I had on my drive. It still had battery left after that, so I was really impressed. I got close to 5 hours of use out of it without a charge.