09-06-2016 11:39 AM
Ive looked endlessly for a solution. Obviously many other people have this issue. What I have done so far is delete energy manager because its been defective for many people. After doing that, my battery indicator finally filled up to 100% in the animation. Prior, it had been stuck at 60% with charger plugged in and once taking the charger out, computer would shut off in 30 min. Past 6 months I have been using the compyter with the charger in because my warranty expired the day before problems rose.
Ive also tried uninstalling some ACPI thing under device manager > Battery because i read it somehwere. I just want to know when my battery is gonna die. I can never work on important documents without a charger. So frustrating..
Solved! Go to Solution.
10-11-2016 08:49 AM - edited 10-11-2016 11:05 AM
In response to customer reports of unexpected battery gauge behavior on Y40-70 and Y40-80 laptops, Lenovo determined the battery gauge software is performing as expected. The unusual gauge results being reported are a reflection of the battery reaching end of life.
Lenovo has released a Service TIP to assist customers with obtaining battery replacements under warranty, or if out of warranty, to find a replacement battery from Lenovo-approved vendors. The Service TIP can be found here: https://support.lenovo.com/us/en/solutions/sf16-I0023
The part numbers for Y40-70/80 batteries are:
Y40 SP/A L13M4P01 7.4V48Wh 4cell bty (Y40-70/Y40-80) 121500248
Y40 LG L13L4P01 7.4V48Wh 4cell bty (Y40-70/Y40-80) 121500249 substitute part 121500251
Y40 CP/C L13C4P01 7.4V48Wh 4cell bty (Y40-70/Y40-80) 121500259 substitute part 121500251
To determine which battery came with your Y40 notebook, instructions for removing the bottom cover can be found in the Hardware Maintenance Manual pdf here. An alternative to opening your system (which does not void warranty) is to search for batteries using the model/product number located on the bottom cover.
10-21-2016 06:18 PM
What is substitute part? Can you just clearly tell me which one fits the Y40 model best? It says its out of stock.... What happens if I buy this and it wasnt the battery issue. Are you going to reimburse me?