I was wondering if this is normal. I've lost about an hour of battery life after I installed a 320 into my 2010 Macbook Pro. I did SMC and PRAM reset after I installed the SSD. Has anyone experienced similar problems?
did you possible install it in the optical drive and you have now a HDD + SSD running?
Otherwise they only time the SSD might be worse in power consumption is when the HDD spins down, but that hardly ever happens.
I have the 40gb 320 in an optibay along with the original HD on idle, and I get around 20 minutes of extra battery life. (5:10 vs 4:50 for productivity & web browsing w/ wifi on and half screen brightness)