![]() ![]() Maybe I was just lucky or perhaps the batteries back then were made of sterner stuff.I had a hot coffee accident in my office bag from my thermos yesterday and all the coffee leeked in the bag. But when I tested the battery just prior to getting my act together it was just fine and it is still going strong today. The past year or two I've followed the rules. For a number of years before I learned some of the things you've listed I did just about everything wrong when it came to my wife's 2011 13" MBP. I've wondered about some of the battery advice you list. It's only lost roughly 1150 mAh of capacity from 5770 mAh. The results are nothing short of extraordinary:Ĭoconut battery states battery is at 79% capacity, cycle count of 401, battery status good. I've exposed the MBP to extreme cold and heat in the trunk of a car. I used the MBP 2011 almost every day from 2011 till 2015 and in almost all the cases broke the rules you just said not to break: i keep it plugged in all night when I got home, i used to run it down to 3-5%, and topped it up from location to location. I have had different experience with Macbook Pro 2011 I am using as a spare. At any rate, if you haven't treated your batteries like they should be treated there's hope! ![]() Maybe I was just lucky or perhaps the batteries back then were made of sterner stuff. I dont think that an ISB C battery can damage your laptop Permanently external power - this kills every batteryĭisrupted charging - always perform a full charge and add some minutes Load half full battery - empty to below 20 % capacity if possble You should avoid by all means the following situations: In case your device shows less Performance you should read guides how to keep your batteries healthy. Modern good batteries should perform like that or better. My late 2013 retina MacBookPro 13" had some 300 cycles and 90 % of the initial capacity. How long does it take for apple to replace battery same day or do they ship it out? I tried reset smc/pram several times but that did not do anything. I want to make sure the Anker is not damaging the battery if i get apple to replace it under applecare. I had the Anker battery connected to my laptop and an iphone 6s and I wonder if this could have caused damage. It is the first time I noticed the warning. I am not sure if it has been there for a while. I noticed the 'service battery' warning for the first yesterday and I want to see if this issue was caused by the Anker battery or if the battery was just defective. I've powered/topped up the laptop using Anker PowerCore+ 26800 and a USB-A to USB-C anker cable about 25 times. I have the June 2015 Macbook 12" with 247 charge cycles and 3970mah full charge capacity out of 5297mah(75%) after testing with coconut battery app. With the anker it stays steady at the same percentage and I've used the laptop for several hours with only 30-40 percent of the anker battery depleted. if you are using the macbook while charging it with the ravpower does the battery percentage go down? It is like buying a drink in a bottle which will only pour out 65% of the contents. All the manufacturers do it, and also ignore transfer efficiency. If you are going to specify capacity as mAH you have to say what voltage it is using. Battery power is measured in Watt-hours not milliamp-hours. "26800mAH" is a marketing figure intended to sound big and confuse. ![]() This means that, with typical 65% transfer efficiency which applies to all these batteries, a fully charged RavPower will only charge the MacBook about once. At 15V it is one third of that of course, i.e. ![]() If the RavPower is not reasonably fully charged it will not reverse at all, and then you can only charge the MacBook using the USB-A port on the RavPower at 5V.Īlthough billed at 26800 mAH, that is the current x time at 5V. You reverse this by holding the button on the RavPower down for 10 secs but it doesn't always work first time. The RavPower has its quirks, the most annoying one being that on connection to the MacBook with a USB-C to USB-C cable, the current sometimes flows the wrong way, ie from the computer to the battery. The RavPower can also be recharged very quickly as well because it can be done at 30W. The RavPower charges at the same rate as the Apple 29W wall charger, so the answer to your question, can it charge the MacBook while in use is yes. ![]()
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