Y40 - 80 randomly turn off. The battery calibration has not fixed the problem of battery meter.

Hello

I've had this Y40-80 during about 9 months and it has recently been acting strangely. The laptop will stop randomly. I thought that it was a sign, I had to calibrate the battery but after I had calibrated the battery, the battery meter percentage remained at 100% for a good 2 hours until it starts to decrease.

Now, I tried to recalibrate the battery for 5 times using the howtogeek, OneKey and the discharge of the BIOS. I did a fresh install of Windows to get rid of all the software Lenovo that might have caused the problem, but that did nothing.

I also uninstalled the Windows ACPI and Lenovo ACPI, which does not solve everything.

This issue makes the computer laptop underclock the processor environ.48 Ghz, which makes the computer almost unusable.

Someone have an idea on how to solve this problem, or is the battery dead?

Comment to Moderator: Bumping more frequently than 3 days unjustly pushes down the discussions of other members. Bumping message (s) deleted.

In response to customer relationships of unexpected behavior portable Y40 - 70 and Y40-80 meter battery, Lenovo has determined that the battery meter software is working as expected. The unusual calibre results being reported are the reflection of the battery reaches the end of life.

Lenovo has launched a CUTTING-EDGE Service to help customers get the battery replacement under warranty, or if more warranty, find a spare from suppliers approved by Lenovo battery. The Service TIP can be found here: https://support.lenovo.com/us/en/solutions/sf16-I0023

The numbers for Y40-70/80 batteries are:

Y40 SP / A L13M4P01 7.4V48Wh 4cell IBE (Y40-70/Y40-80) 121500248

Y40 LG L13L4P01 7.4V48Wh IBE 4cell (Y40-70/Y40-80) 121500249 replace the 121500251 part

Y40 CP/C L13C4P01 7.4V48Wh IBE 4cell (Y40-70/Y40-80) 121500259 replaced by 121500251 of the part

To determine what battery supplied with your computer laptop Y40, instructions to remove the lower cover can be found in the manual of Maintenance of equipment pdf here. An alternative to opening your system (which do not cancel warranty) is to find batteries using the product/model number located on the bottom cover.

Thank you

Tags: Lenovo Notebooks

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