Basically, I got a brand new MacBook for university worked brilliant for years. Moving house it just got left in the cupboard completely dead of battery and forgot about. Fast forward to now I’ve bought a brand new charger, plugged it in, it went green for a few seconds then went off. Now the charger is showing no colour at all. What can I do to get it back up and running?
[Re-Titled by Moderator]
How long was the battery left at 0% charge? The longer a battery is at 0% charge the more likely the battery has been permanently damaged. Sometimes the battery may start to charge, but many times the battery will not charge due to the damage. It is a bit complicated since laptops may get stuck trying to power on the laptop while also trying to charge the battery. Neither one ends up with enough power so the laptop doesn't power on & the battery won't charge.
I don't have enough experience with the M-series laptops and their Magsafe 3 chargers to what their behavior is like under these conditions. With Intel Macs the Magsafe LED would usually be lit green or amber, but I also know some of these M-series laptops seem to have their Magsafe 3 charging ability break....perhaps that is what you are seeing with no Magsafe LED. Look at the troubleshooting steps here for Magsafe charging troubleshooting:
If your MagSafe cable or power adapter isn't working - Apple Support
You can also try using a USB-C charging cable to see if that makes any difference. Many times this will work when the Magsafe 3 charging does not work, but if your battery has been at 0% charge for a while, then nothing may work. An Apple tech can try disconnecting the Battery for a minute, then reconnect the BMU screw & connect the power adapter, then reconnect the battery flex cable to see if it will allow the battery to start charging....worked for me on one M-series laptop recently. Most Apple techs do not know this trick, so it is best to describe it to them before any parts are replaced.
FYI, when storing any device with a Lithium Battery, it should always be stored with a 20% - 60% charge on the battery. Of course the longer the device/battery is stored, then the user will need to occasionally charge the batter so this charge level is maintained. With the 2016+ Apple laptops things are even more complicated since all of the following can cause the laptop to power on even after being fully powered off:
Here is an Apple article with instructions for storing a device with a Lithium Battery (near the bottom of the article):
Batteries - Maximizing Performance - Apple
How long was the battery left at 0% charge? The longer a battery is at 0% charge the more likely the battery has been permanently damaged. Sometimes the battery may start to charge, but many times the battery will not charge due to the damage. It is a bit complicated since laptops may get stuck trying to power on the laptop while also trying to charge the battery. Neither one ends up with enough power so the laptop doesn't power on & the battery won't charge.
I don't have enough experience with the M-series laptops and their Magsafe 3 chargers to what their behavior is like under these conditions. With Intel Macs the Magsafe LED would usually be lit green or amber, but I also know some of these M-series laptops seem to have their Magsafe 3 charging ability break....perhaps that is what you are seeing with no Magsafe LED. Look at the troubleshooting steps here for Magsafe charging troubleshooting:
If your MagSafe cable or power adapter isn't working - Apple Support
You can also try using a USB-C charging cable to see if that makes any difference. Many times this will work when the Magsafe 3 charging does not work, but if your battery has been at 0% charge for a while, then nothing may work. An Apple tech can try disconnecting the Battery for a minute, then reconnect the BMU screw & connect the power adapter, then reconnect the battery flex cable to see if it will allow the battery to start charging....worked for me on one M-series laptop recently. Most Apple techs do not know this trick, so it is best to describe it to them before any parts are replaced.
FYI, when storing any device with a Lithium Battery, it should always be stored with a 20% - 60% charge on the battery. Of course the longer the device/battery is stored, then the user will need to occasionally charge the batter so this charge level is maintained. With the 2016+ Apple laptops things are even more complicated since all of the following can cause the laptop to power on even after being fully powered off:
Here is an Apple article with instructions for storing a device with a Lithium Battery (near the bottom of the article):
Batteries - Maximizing Performance - Apple
livvy50 wrote:
Basically, I got a brand new MacBook for university worked brilliant for years. Moving house it just got left in the cupboard completely dead of battery and forgot about. Fast forward to now I’ve bought a brand new charger, plugged it in, it went green for a few seconds then went off. Now the charger is showing no colour at all. What can I do to get it back up and running?
[Re-Titled by Moderator]
Leave it plugged in for an extended period...
If it is an Intel Mac you can try resetting the System Management Controller
Reset the SMC of your Mac - Apple Support
Even if there is no light on the charger?
Why does my new MacBook Pro charger turns off after a few seconds?
