Laptop auto shutdown issue without low battery warning when battery power is 30%.

Sharathbalu

Hi guys,
I bought this laptop with pre-installed endless linux os a month back. Later, I loaded with Linux Mint system. Since then, the laptop is shutting down without low battery warning even at 30% itself. After laptop is started with charger plugged in, the battery % was showing 0! I tried to setup low battery alert by installing tlp, battery-monitor softwares etc. but went in vain. Please do suggest whether the issue is related to Operating System or problem with battery itself. I even contacted the acer authorised service centre. They suggested that the laptop is all perfect and no option is available to set the low battery limit in the OS. Please help me in this regard.

Spelunker

@ Sharathbalu

If the battery isn’t allowed to run from 100% down to 0% occasionally, the battery’s power meter won’t know how much juice is actually in the battery. That means your laptop may think it’s at 30% capacity when it’s really at 1%—and then it shuts down unexpectedly. I believe you need to do a Battery Calibration to resolve this issue. In fact I recommend doing a battery calibration every two to three months. This helps keep your battery readings accurate.

Recalibrating your battery is simple: just let the battery run from 100% capacity straight down to almost dead, and then charging it back to full. The battery’s power meter will see how long the battery actually lasts and get a much more accurate idea of how much capacity the battery has left. 

But I would recommend that you check out the following link that provides some easy ways to a Battery Calibration with pictures.

https://www.howtogeek.com/172271/how-to-calibrate-your-laptops-battery-for-accurate-battery-life-estimates/