ATIV Book 6 keeps shutting off at 40%

For the past few days when I used my laptop unplugged, everything was fine and then all of a sudden the computer turned off. The battery level was at 40%, so it wasn't low enough to shut it down. It didn't go to sleep or shut down, it just turned off. This happened on the Power Saver and Samsung Optimized modes. I checked the health of my hard drive using chkdsk but it said there were no errors on the disk. I checked the Intel Rapid Storage program and it said the drive was fine. Didn't hear any weird noises from it either. I do not have any malware on the computer. So I ran powercfg -energy and powercfg /batteryreport and got the following information:


BATTERY 1 NAME SR Real Battery

MANUFACTURER SAMSUNG Electronics

SERIAL NUMBER 123456789

CHEMISTRY LION

DESIGN CAPACITY 57,456 mWh

FULL CHARGE CAPACITY 34,960 mWh

CYCLE COUNT 1183

Should I replace the battery or are there other issues I haven't considered?

 

A cycle count of over 1000 indicates a well-used battery. Manufacturers usually claim about 500 charge cycles.

However, you can probably get the battery to behave more predictably by running the battery calibration in the BIOS. First fully charge the battery (disable Battery Life Extender if you have that option on your computer), then go into the BIOS, disconnect the PSU and select the battery calibration. This will run the computer on battery until there is no charge left so the battery control chip knows where empty actually is (when Windows shuts down the computer there is still come charge remaining). After the computer stops then recharge it. You may find that the capacity has further reduced although sometimes the recalibration can increase the full charged capacity. Then re-enable Battery Life Externder if you use it.

John

 

How do I disconnect the PSU? Do I have to open up the computer for that? And where can I check to see if I have the Battery Life Extender feature?

 

1. Disconnecting the PSU means unplugging the main adapter.

2. Press Fn+F1 to enter (Easy) Settings. The switch for Battery Life Extender should be there, if supported by the computer. Or you can find the option in the BIOS.

John