Questions tagged [charging]

Concerning hardware issue with recharging a battery

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36
votes
5answers
49k views

Is the Macbook 12 inch's USB-C charger interchangeable with other USB-C chargers or devices?

If there is only the Macbook 12 inch USB-C charger nearby, can it be used to charge other USB-C devices, such as any Android phones that also use USB-C? (will it be "too powerful" and damage other ...
7
votes
1answer
5k views

What's the best way to prolong the lifespan of a Macbook Pro battery? [duplicate]

I have two Mac book Pros: A 2013 Unibody retina that I use every day An older 2006 model with removable battery that I use a couple of times a month (when not in use, it's not connected to the AC. I ...
70
votes
10answers
35k views

What are the best practices for battery longevity?

How do you maximize the cycle count of your battery? There seems to be a debate between: Leave plugged in 24/7 but do a full cycle once a month Charge to ~100%, drain to ~10%, repeat. NOTE: Taking ...
73
votes
10answers
188k views

Can I use 45/60/85W MacBook chargers interchangeably?

I have a 13" Macbook Pro that came with a 60W power adapter and a 15" Macbook Pro that came with a 85W power adapter. Can I use either adapter with either laptop? There seems to be disagreement in the ...
24
votes
6answers
30k views

How to disable battery charging?

From the pmset man page: POWER SOURCE ARGUMENTS -g with a 'batt' or 'ps' argument will show the state of all attached power sources. […] Certain Apple battery calibration tools may ...
5
votes
4answers
2k views

MacBook Pro randomly discharges from 100% to ~90% when plugged

My 15 inch 2018 Mac Book Pro with Mojave 10.14 randomly starts draining battery when plugged in. When I try to move the cable, change the power cable to a different USB slot nothing helps. The battery ...
2
votes
1answer
3k views

How to preserve MacbookPro battery from degradation? [duplicate]

Platform: OS X: Yosemite 10.10.4; MacbookPro 15" Retina (mid-2015). Fact: There is aging for battery in any case - using or not. But while using - there is difference of how to use. My questions - in ...
20
votes
7answers
32k views

iPad displays “Not Charging” when plugged into USB ports. What can I do?

When I plug my iPad into my computer's USB ports, the iPad battery area displays "Not Charging". I understand the iPad requires more wattage to charge compared to an iPhone or iPod, as evidenced by ...
5
votes
2answers
1k views

Easiest way to connect two non-thunderbolt monitors to my Macbook Pro 2017 and charge it at the same time?

I started a new job working remote recently. I've been provided a Macbook Pro 2017 (EDIT: model is 13", non-touch, with 2 Thunderbolt ports) and two non-Thunderbolt monitors (Dell P2217H). I have ...
30
votes
5answers
76k views

Is it OK to charge my iPhone with my iPad charger?

I have an iPhone 4 and an iPad. Since the iPad really charges best off the wall charger I keep it plugged in, but I usually just charge the iPhone off the computer. Although frequently if the iPad ...
36
votes
7answers
131k views

iPhone 7 won't charge from my MacBook Pro [duplicate]

My iPhone 7 which I recently bought doesn't charge with my MacBook Pro Retina 2015. It always shows for one second that it recharges but then something like lost connection and then again. and goes on ...
6
votes
3answers
2k views

MacBook Pro battery drains when connected to AC power

I've been experiencing a very annoying problem lately. Often, I've got my MacBook Pro connected to power when I'm working from the office. At home, I often leave it unplugged until the battery is too ...
4
votes
2answers
6k views

Macbook Pro Battery 0% and wrong date

Model: MacBook Pro Retina, 13-inch, Early 2015 While I was working, I didn't realize that the battery was low and as a result, my MacBook Pro shut down when the battery had no power. So, then I ...
3
votes
3answers
659 views

USB-C Charging Speeds / Charger Outputs

I own a 2016 Macbook (with the USB-C charging) - at the time and in response to all of the reports of poor cables and poor chargers, I bought a meter so I could see what the throughput of my cables/...
1
vote
1answer
4k views

Danger of damaging 13" macbook pro by charging it with 85w charger? [duplicate]

We've got a range of laptops in our office all macbook pros some of which are 13" and some of which are 15". The 15" laptops came with 85w chargers, and the 13" came with 60w chargers. I want to ...
12
votes
2answers
7k views

Should I use the adapter or the battery?

I want to know when my MBP's battery was fully charged it's better to unplug my adapter and use my battery power or still let use adapter power? I somewhere read that when MBP's battery was fully ...
12
votes
4answers
56k views

Can I (or should I) use a MacBook charger on my iPhone?

I recently got a MacBook with the USB-C charger. It comes with a 29-watt power brick, and I was wondering if I should use this to charge my iPhone. I've heard that the iPad power brick (I think 10 ...
4
votes
2answers
16k views

Using iPhone while charging and when charged

Is it OK to use an iPhone 4 that is fully charged while keeping it plugged to wall outlet? I am worried about stressing battery too much since it is charging and discharging at the same time. Any ...
9
votes
5answers
5k views

Battery is draining with “Power source: Power adapter” in macOS Catalina

I've noticed a strange problem with my 2018 MacBook Pro. Sometimes, when I use it with the (original) adapter, it says that the power source is power adapter, but the battery is still draining and not ...
6
votes
2answers
3k views

iPhone 6s with iOS 12.4 not connecting to MacBook Pro mid2015 with macOS 10.14.6

I am using an iPhone 6s with iOS 12.4 and a MacBook Pro mid2015 with macOS 10.14.6. Since recently (I am not exactly sure when it started), I cannot charge the phone with my computer anymore. As soon ...
3
votes
3answers
32k views

Battery is not charging despite SMC reset

I have a problem with charging of my Battery which has been appeared last night. It was working perfectly well for a long time. All of my friends who had different laptops were so jealous at my ...
10
votes
1answer
19k views

MacBook Pro USB ports not working properly

At work, I usually use my left USB port to charge my iPhone, while the right port connects to a hub on my monitor, providing Ethernet, external keyboard and sometimes another iOS device. I also have ...
18
votes
3answers
20k views

What are the consequences of using a low-wattage USB-C power supply with a MacBook Pro?

This question pertains to USB-C not MagSafe. MagSafe negotiates available power with the Dallas 1-wire protocol. USB Power Delivery (PD) is an unrelated protocol. Answers based on experience with ...
5
votes
3answers
10k views

Can a low-wattage adapter fully recharge the battery of a turned off MacBook?

MacBooks come with power adapters that provide a certain wattage (for example 87 W) required to keep the computer running and charge the battery. If used with a lower-wattage power adapter (for ...
0
votes
5answers
36k views

How can I charge my iPhone without waking up my MacBook Pro?

I have a MacBook Pro (10.7.3) and an iPhone 4 (5.1). When I'm trying to conserve outlets, I charge my iPhone at night by plugging it directly into my computer. If my computer is asleep with the lid ...
9
votes
2answers
26k views

How to reset a magsafe charger that doesn't charge macbook pro's battery?

I have a Magsafe charger (original) that doesn't charge my MacBook Pro's battery. When it is connected, it will allow the machine to switch to power adapter mode (meaning no battery consumption) but ...
4
votes
1answer
3k views

iPhone is dead, will not charge

I have an iPhone 4s running on iOS 8.1.3. I've owned it for about 2-3 years now and have taken good care of it physically and hardware wise. But recently my phone had died. I plugged it in to the ...
6
votes
1answer
29k views

How to never “allow this device to access photos and videos”? [duplicate]

I have an iPhone at work, and I charge it by connecting it to my work laptop (Windows 7) via USB. Every damn time I do this, the phone asks me to Allow this device to access photos and videos? with ...
5
votes
1answer
2k views

Can my external monitor charge 16" MacBook Pro over USB-C while using it?

I am planning to use my new 16" MacBook Pro with an external display which is equipped with a USB-C output. I use the setup generally in extended display mode, and sometimes in clamshell mode. I am ...
5
votes
6answers
10k views

My MagSafe to MagSafe 2 converter becomes extremely hot. Why?

Out of nothing, my MagSafe to MagSafe2 converter became extremely hot while charging. So hot, I could not even touch it. What could cause it? I've been using it so I can leave multiple old 85W ...
2
votes
1answer
237 views

How to know which one is used when charging a MacBook Pro with usb-c from multiple power adapters?

There is this great question: What happens if you plug more than one charger in the new MacBook Pro (2016)? It doesn't tell me how to find out from which source the MacBook is charging though. ...
2
votes
2answers
17k views

Are non-Apple lightning cables and power transformers safe to use?

I need to buy an Apple 12W USB Power Adapter for my iPhone 5. In eBay you can find replicas for one third of the price. Do you know if these can ruin your phone? I am more cautious about a third ...
2
votes
0answers
79 views

Battery charge status decreases while plugged in charging [duplicate]

so I have a 2019 MacBook Pro 16" on Catalina 10.15.5. I recently got it back from the shop - upper case replacement for bad keyboard that included replacing the battery as part of the repair. ...
1
vote
1answer
600 views

Will two charging cables charge my laptop twice as quickly? [duplicate]

Now that the MacBook has all of its ports the same, is it possible to plug in two power cables into the Mac? If I do so, will it charge twice as quickly? In the event that the Mac is unable to allow ...
9
votes
3answers
5k views

iPhone-Mac connection issue and what does the usbd process do?

I know there's 2-3 questions in this community relating to connection issues between iPhones and Macs via a USB connection, and I know a temporary solution to fix it. But I would like to know what ...
12
votes
5answers
285k views

Why do iOS devices take such a long time to turn back on?

Often I will realise my iPhone or iPad is about to run out of battery, run around the house looking for a charging cable and plug, and get back just in time to see the screen go black and the little ...
7
votes
9answers
97k views

Can I use my iPhone charger with my iPad?

My iPad 1 charger was burned because of high voltage, so it stopped working. Currently, I am using an iPhone 3GS mini charger. It charges the iPad but only very slowly when the iPad is on but the ...
11
votes
4answers
20k views

Can one MacBook charge another over USB-C?

When two 2016 MacBook Pros are connected over USB-C, can they transmit power? Could an adapter look like a phone from one side but like a charger from the other, so that it would convince one MacBook ...
9
votes
2answers
8k views

How to charge MacBook Pro quickly from an iMac?

I am charging a MacBook Pro using a Thunderbolt 3 cable plugged into an iMac. This charging speed is exceptionally slow. The image shows 5+ hours to charge the laptop. I am using: 2018 MacBook Pro ...
4
votes
5answers
821 views

16" Brand new macbook pro not charging / booting up

I'm an IT guy of a company. We have ordered some 16" macbooks for our developers but they're not charging/ booting up. When I try to boot up, a battery icon appears on black screen just like ...
3
votes
1answer
7k views

Loud noise charging Macbook Pro USB-C

Anyone ever had a loud noise coming from the speakers when inserting the usb charger? When I say a loud noice, I mean a screeching, metal-scraping-like sound at full volume. My volume was turned off ...
2
votes
6answers
16k views

Early 2015 MacBook Pro battery not charging

My MacBook Pro battery is not charging for days. It only stops at 8% (not increase or decrease) when I plug in. In addition, the light at the end of charger does not turn on. What is the problem of ...
20
votes
12answers
147k views

Can I use my iPhone charger for charging other USB based devices?

Is it OK to use my iPhone charger for charging other USB powered devices like the Kindle or a digital camera (with a rechargeable battery)? Can it cause any damage to the charger or to the device ...
10
votes
2answers
986 views

Why can my Mac charge my iPad but other computers can't?

What do Macs do differently so its USB ports can charge my iPad, but if I plug into a USB port on my PC I get the "not charging" message?
8
votes
4answers
1k views

Power a MacBook Off-Grid

I'm interested in working remotely- very remotely off-grid in fact. How can I power a Macbook Pro & related peripherals using Solar Power?
6
votes
3answers
4k views

iPad being using in wall mount battery swollen

Ive got an install with an iPad mini 4 installed in a wall mount running locked to a single app. The wall mount has a POE to USB adaptor built in. The iPad is powered by a TP link POE adaptor : https:...
6
votes
3answers
23k views

Can the 12-inch macbook charge from USB-A?

While it's nice to have a laptop that can charge over a standard cable, USB-C is not yet ubiquitous. USB-A is: you can be sure that whatever hotel room or office you visit, you will find a place to ...
4
votes
1answer
5k views

iPad Charging USB Hub? [duplicate]

Possible Duplicate: When I plug my iPad into my computer USB ports, iPad displays “Not Charging”. What can I do? Newer MacBooks provide enough juice through the built-in USB ports ...
4
votes
1answer
1k views

Is it safe to use the 12W iPad 4th gen power adapter for earlier iPads and iPhones?

The older iPads have 10W power adapter (charger), and the iPhones supposed use only 5W chargers. But the iPad 4th gen, probably due to the larger power consumption, uses a 12W power adapter / charger....
4
votes
2answers
522 views

Has Apple indicated that some 2019 MacBook Pros have a fault relating to power, battery or shutdown issues?

I bought a MacBook Pro two days ago and when I was using it for the first time I noticed that when it drops below 40% (20%-40%) it shuts down with no warning and it's impossible to turn it back on ...