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Paper Tape
Posts: 4
Registered: ‎04-19-2015
Location: Ecuador
Views: 487
Message 1 of 3

Y40-80 Battery 0% Only works with charger

Bought on april 2015, HD died on may 2015, lost all information went to warranty a change HD, in december start the problems with battery, affter calibration works well for 3 weeks, now is on 0% and its not charging.


It's a configurtion/driver problem or I need to buy a battery because I can't find the battery at,


Despite my warranty covers up to june 2016, it's hard for me to apply. I'm on Ecuador and warranty works only in US.  Last time a cousin went to US a helped me. 




Bit Torrent
Posts: 2,379
Registered: ‎03-08-2012
Location: CA
Views: 474
Message 2 of 3

Re: Y40-80 Battery 0% Only works with charger

Try removing the battery and reinstalling it. it may not be connecting properly or snapped in all the way.


Some components have an FRU # on them which is the field replaceable part number. I don't see why the battery cannot be shipped to you anyway. But you need to call Tech Support to process this since the forum is NOT tech support only a forum of users primarily.

T520 Model 4239 Intel(R) Core(TM) i7-2860QMbr>; Nvidia NVS 4200M Win 10 64bit
Z70-80 I7 - 5500U 16GB GB - 1TB HD Win 10 64bit FHD 17.3", G840 w/2GB

Former Employee
Posts: 1,664
Registered: ‎09-16-2014
Location: US
Views: 331
Message 3 of 3

Re: Y40-80 Battery 0% Only works with charger

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:


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.


Thank you,

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