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Posts: 1
Registered: ‎04-17-2014
Location: Israel
Views: 371
Message 1 of 3

Battery doesn't charge more then 98%



I have purchased a new Lenovo ThinkPad T440P,

I installed the ThinkVantageTechnologies Power Manager, and now I see that the battery is always on 98%, even if it is connected to electricity for a week time it is still on 98%, while it should have been on 100%,


Can anyone please advise what is wrong?

Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 342
Message 2 of 3

Re: Battery doesn't charge more then 98%

This is expected behavior. There's a hysteresis range of 96% to 100%, which prevents repeated charge/discharge when the battery is near full.

i.e.) If you plug the AC in while the battery is between 96 and 100%, it will not charge the remainder. It will charge up to 100% if you plug in the AC when the battery is below 96%.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
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TPT1: 1839-23U
Punch Card
Posts: 65
Registered: ‎03-06-2014
Location: US
Views: 332
Message 3 of 3

Re: Battery doesn't charge more then 98%

Which OS are you running? Win 7 comes with different power management software than win 8.x.

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