#Mac pro power supply cord how to
#Mac pro power supply cord full

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:Д®xtreme temperatures - high heat and freezing temps can kill a battery prematurely.Дrops 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.Д®ven 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.Дon'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, itвЂ™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.ДЇurthermore, 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.Д«asically, 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.ДЇurthermore, the periodic cycling described in the apple documents listed above Post) does not have an effect on the battery chemistry. You smell it once and its easily recognizable for the rest of your life. But since I didn't see with my own eyes, where each was soldered I thought I'd get a second opinion.the center 'core' wires carry the voltage (vo) and the outer 'sleeve' goes to ground (gnd), right? Seems like a stupid question, but I keep thinking 'what if.?' What if I plug it into the wall, hear some crackling sound, then smell the sharp smell of burning resistors, diodes, capacitors etc. It will be a normal apple 45w 24v t-connect magsafe adapter, from the core2duo era of macbook pros. I didn't unsolder the cord from the board myself, and its been long enough since i've done this, I thought I'd make extra sure I have each of the 2 wires going where they should. There's no wire to splice onto, so I'll have to solder it to the board.

I've got a good power adapter I can use with a spare magsafe cord I have. I'm going to be without an adapter for a few days, so I'm going to put one together from my collection of parts I've saved over the years. Replacement MagSafe cord- I found mine on eBay for like $16. Capacitors can hold a charge for a while so it's best to leave the adapter unplugged for a bit prior to working on it.

#Mac pro power supply cord how to

Next, I decided to figure out how to crack open the adapter and replace the entire cord and that's the process I'll demonstrate with this instructable.Д«e careful and make sure the adapter is completely discharged. Then I decided to splice out the shorted sections of cord which did work but left me withВ relativelyВ short cords for charging the computer. I used to buy new MagSafe adapters but that got expensive fairly quickly. Having owned several Apple notebooks which utilize the MagSafe adapters I've seen my share of failures.ДЄnything in from stuck pins which prevent the computer from charging to my cats deciding the adapters are made out of some rare form of addictive kitty-crack and shorting out the cord by chewing on it.