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Macbook Pros slow down when Battery is removed

bcaslis said:
Better than nothing but a couple of issues:
It means don't leave it plugged in for weeks without using it. It does not say to run it with the battery removed. There is absolutely nothing on that whole page that says you should or should not run the laptop with the battery removed. Anyone thinking it says to run the laptop with the battery removed needs some basic reading comprehension courses.
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Read the first bullet point on the HP site and contrast with the temperature of a battery kept in a powered laptop. Spend 5 minutes with your favourite search engine and terms like "remove", "battery", "laptop", "extend life". If you're not hitting batteryuniversity fairly quickly, you're doing it wrong. Both your pasted scenario and the original thread poster's are justified a fortiori.

Oh, and Dell. In particular "What does Dell recommend for battery storage for a long period of time?" bullet point "Do not store batteries for long periods plugged into or attached to any power source. This includes AC adapters and laptop security carts plugged into an outlet." The figure of 4 days is given indirectly, but if you note the supporting comments, you'll see that it's a convenience figure suggested - the main point is that keeping your battery warm makes it die sooner and continuously topping it up makes it die sooner.

If you're going to stubbornly reject these points or, worse, suggest that the battery is required because removing it hampers cooling (I hope not even form-over-function Apple would consider a battery as a part-time heatsink), then perhaps you're just as annoyed as we are about Apple and trying very hard to rationalise away the standard capitalist motive.
 
skwirl341 said:
Hey guys, my Macbook Pro doesn't work when I take the hard drive out of it!!! This is RIDICULOUS. The hard drive adds weight to the machine and I don't want to be forced to replace it every two years when it wears out. This is a crazy Apple conspiracy, lets start an online petition and let steve jobs know that he cant bully us customers around!
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If the computer didn't turn on or ran slower without a hard drive, I would complain. I run PC's with a LIVE CD all the time, and they don't have a (usable) hard drive!
 
I still need confirmation that the coolbook workaround works with the unibody macbook pro 15,4".

I tried it on my white macbook 2,1 (2GHz, GMA950) and even though it works to set the clock higher than 1GHz, the system freezes for short periods, and I have had a shutdown under load.

My calculations says that the macbook should use under 60 watts when maxing out, and the adapter should be able to deliver 60 watts.

Has someone tried this out on the unibody macbook pro? It should be able to set the clock back, but will it get enough power, or will it freeze like my white macbook does?

Would really appreciate an answer to this since I'm considering to buy a macbook pro, but use it mostly as a desktop.
 
whitefang said:
It's about Apple purposely clocking down the machines when the battery is removed FOR NO REASON. In this economy, it's a good thing to save money, but I guess the Apple fans don't care.
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Didn't I give you a reason? Just because the adaptor is rated for a certain amount of power, doesn't mean that it can always provide that much power. One example is plugging in on an airplane. Knowing this, Apple has three choices:

  1. Ignoring it, and possible allow damage to occur to the laptop.
  2. Adding additional hardware that underclocks components when it detects insufficient power.
  3. Doing what they do now, and underclocking when the battery is removed.

Obviously #1 is a poor choice. #2 would be complicated and expensive, adding to the cost of the laptop (just I guess, but I'm willing to bet this would be more expensive than the cost of another battery).
 
ryannazaretian said:
Leaving the battery in does not do a thing to the battery. Keeping it out all the time can actually hurt it more because it's not exercised.

Batteries are like humans.
If you take a battery out and put it in a drawer for a year, it's like a human quitting their job and quitting all physical work and sitting in bed for a year. The human will get fat and not be able to work again. Same thing with the battery.

They need to be exercised! Leave it in, use it when you want. People who don't use their battery often have a bad battery in a year or less, while those who do use their battery often can keep a battery for a year or more with decent performance.

Leave it in, don't worry about it, it does not constantly charge. If it did charge all the time, it would blow up on your desk, which wouldn't be cool at all.
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Yup! It totally does no harm at all to your battery to leave it plugged in almost all the time! That's why my battery health is at 43% after only 11 months, and less than 100 cycles.

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cathyy said:
Yup! It totally does no harm at all to your battery to leave it plugged in almost all the time! That's why my battery health is at 43% after only 11 months, and less than 100 cycles.
…
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I guess individual batteries also have a bearing on there life.

My figures are 28 months, 25 cycles and 95% health.
 
If you buy a Prius Hybrid, can you drive at regular speed without the battery?
 
cathyy said:
Yup! It totally does no harm at all to your battery to leave it plugged in almost all the time! That's why my battery health is at 43% after only 11 months, and less than 100 cycles.

picture4j.png
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And I used my original MB battery most of the time and had 75 cycles in three months when it failed. What's your point? I can't use my example any more than you can on what the correct way to use a battery is. Some batteries are just faulty from the beginning and Apple stands by it replacing them for free. It is obvious that using the battery most of the time reduces the lifespan of the battery, but that doesn't mean one should never use it. I've changed the way I've used the battery and hopefully this new battery will last a long time.

All we have is what the general recommendation and that is to use AC power most of the time, keep the cycles under 3 a week, and to fully calibrate every 2 months.
 
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