How come the speed of my Macbook Pro is still at 1.33 Ghz?

I was using my Macbook Pro without the battery for the past week because I was waiting for my new replacement battery and the speed went to 1 Ghz and now that I just recieved my new battery and installed it the speed just went to 1.5 Ghz and my normal speed is usually 2.16 Ghz. What is wrong with my computer? is it broken because I used it without the battery.

no I don't believe it's a problem.
there's a bug where the MB/MBP will only run at 1ghz without the battery. It shouldn't damage your notebook however.
Your processor idling at 1.5 ghz is normal. It speeds up depending on the load to save battery life and heat. If you run something intensive, your speed will rise again to 2.16 ghz. There is a way for you to test this. For some reason, in firefox, if you hold the mouse button down on the page, it brings your speed to max. So try that. just hold the mouse button down in the firefox page and see if your processor goes up to 2.16 ghz.

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