SameerVerma9400 wrote:
If I try to turn it back on without connecting it to the charger, it powers on for a few seconds, restarts, and shuts down again. I have to connect it to the charger and let it charge for about 10 minutes before it will turn on properly.
This behavior seems to be "normal" for all of Apple' USB-C laptops even with a fully charged & healthy battery. Do I consider it normal....no, but from what I've seen it appears to be a hardware issue with the Logic Board where the Logic Board loses (or thinks it loses) the connection to the battery since requiring a power adapter after reconnecting the battery is normal for these USB-C Apple laptops. Whether it is a hardware failure or just a poorly implemented design.....I don't know.
Unfortunately it is very hard to assess the health of the Batteries on the M-series laptops. I'm still developing a method to do so since the methods I used on the Intel Macs no longer work since Apple broken those methods on the M-series laptops.
I'm not addressing the power off at 10% here you mentioned, just what I have observed while supporting thousands of my organization's Apple laptops which have known good healthy batteries.
When the battery reaches around 11-13%, the laptop shuts down automatically.
The powering off when the battery reaches 11%-13% (if it happens every time) indicates to me a bad battery that should be replaced. I have been doing a lot of monitoring of my organization's M-series Macs in order to better identify a failing battery even when everything in macOS & the Apple Diagnostics say the battery is healthy. What I have found is that it is very difficult to quickly drain the battery of these M-series Macs since the CPU is very energy efficient so having the laptop power completely off consistently at 10% would have me investigate the battery.
The only other possibility is that you have some software (most likely third party software) which is using excessive CPU cycles & power (more than any stress test I've been able to use) which causes the battery to drain extremely quickly. To look for possible software issues, run the third party EtreCheck and post the complete report here so we can examine it for possible clues.
