But if not, you may need to… Fix 3: Reset the SMC To do this:ġ) Remove the power cable from your MacBook ProĢ) Press and hold the power button for 10 seconds, then (don’t release the button!) plug the power cable back into your MacBook Pro.ģ) Release the power button when you see your MacBook Pro start up. This is an effective fix for your MacBook Pro not working issue. If this didn’t work for you, move on to Fix 2, below… Fix 2: Press the power button for 10 seconds And replace your cable or adapter with the new ones if you’re experiencing any problem with them. If your laptop has been plugged in, then make sure your power cable and adapter are not broken. Then wait for a couple of minutes, and try turning it on. If you were using your laptop on battery power, just plug the power cable into your notebook. Make sure your MacBook Pro has enough power. This is the first thing you should do when your MacBook Pro is not turning on. Fix 1: Check the power status of your MacBook Pro That, however kind of defeats the purpose of having the MacBook in the first place.Although these fixes are for MacBook Pro, some of them also work for the MacBook Air or iMac won’t turn on issue. The bottom line is that your batteries have a life span that's governed by age and use and there is nothing you can do short of not using your MacBook to change that. When you get down to it, the battery prices are not that all off putting. You can find many good replacements now on the aftermarket, with generous warranties as well. The 2013 MBP Retina (and newer) batteries require the back cover to be removed, but are actually pretty easy to replace even though they may be glued to the top cover. The 2006 MBP uses an external battery so it's fairly easy to find replacements - and some even come with generous warranties. When they do die, it's always best to get a good quality replacement battery from a reputable manufacturer. Always use a GENUINE power adapter, not some discount charger you find on eBay. Not using the right charger can harm your battery. That said, there are things you can avoid that will shorten the life of your battery and those things include:Įxtreme temperatures - high heat and freezing temps can kill a battery prematurely.ĭrops and physical stress can damage the battery shortening its life But the bigger question is, did you buy a MBP to sit at a desk all day? If so, you should have bought an iMac instead - there's no battery so you eliminate this problem altogether.
MAC PRO POWER SUPPLY CORD FULL
Whether that cycle takes a half day, a full day or a week all depends on how you use it but I am guessing you didn't buy a MBP to sit on a shelf all day long doing nothing.Įven when you keep your MBP plugged in, you are reducing the per day cycle count however you are not eliminating it. A 20% discharge 5 times over is one cycle, a 5% discharge 20 types is also one cycle.
A complete discharge and recharge is one cycle. No matter what you do, you can't change the laws of physics and lithium batteries are governed by age and the number of charge cycles. Lithium cells are actually quite simple to charge.ĭon't worry about it and just use your MacBook Pros for what you bought them for. The statement "For proper maintenance of a lithium-based battery, it’s important to keep the electrons in it moving occasionally." from Apple's site is actually incorrect regarding the lithium battery chemistry at worst, and an oversimplification at best.įurthermore, The battery metering and battery charging systems are separate, so inaccuracies in the battery metering system will not cause errors in charging the battery (before you ask). However, the actual battery capacity and runtime will be unchanged from normal. It is not needed to maintain the battery itself, and actually wastes a battery cycle.īasically, if you don't run your battery down for a long time, the next time you disconnect the laptop from AC, the estimated time remaining value will be incorrect. Periodically draining the battery only serves to allow the Battery metering systems to accurately estimate the remaining battery capacity. It only serves to allow the battery capacity meter to accurately track the battery capacity. The nature of the lithium battery chemistry does not require periodic cycling to maintain capacity.įurthermore, the periodic cycling described in the apple documents listed above Post) does not have an effect on the battery chemistry.
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