Hi, I'm on my MacBook Pro, and I'm using 2-3 cycles per day, so I'm looking at how to reduce that. I know from PC use that keeping the plug in at the same time as the battery reduces its life - as an aside I'm wondering if anybody knows any documentation that says Macs don't do that - in any case I'm thinking above using my MBP plugged in without the battery, but it isn't working for me. When I take out the battery and try and turn it on (power cord only), it won't power on. When I power it on with the battery, then take out the battery, with the power cord in, the screen won't come on, and the white light on the button to lift the monitor flashes. I am using a Macbook Pro 4,1, on Leopard 10.5.8 I have tried resetting the SMC as instructed from this article (http://support.apple.com/kb/ht3964), and it didn't solve the problem. I'm aware of the decrease in processing power without the battery, I'm willing to make that sacrifice to save the battery life. What should I do to be able to use the computer without the battery?