Windows 10: My full charge capacity is at 20% after 7 cycles. Is this degeneration normal? Lenovo X270

Installed batteriesInformation about each currently installed batteryBATTERY 1BATTERY 2NAME45N111145N1127MANUFACTURERSONYLGCSERIAL NUMBER125452127CHEMISTRYLiPLIONDESIGN CAPACITY23,200 mWh23,480 mWhFULL CHARGE CAPACITY4,640 mWh18,390 mWhCYCLE COUNT7144This is a Lenovo x270 with a new internal battery or so I thought. What could cause this?

:)

 

Battery FULL CHARGE CAPACITY Reset

Yves,

"Full charge capacity" means the capacity that the battery is managing to achieve. It is not a limit set by Windows or anything else; it is merely a reading of what the battery can actually do. You can use the comparison of Full charge capacity with Design
capacity to decide when to buy a replacement battery [I do the same regularly].

Full charge capacity will always decrease over time as the battery wears out. This is a chemical phenomenon not a Windows-imposed characteristic.

Windows display of "Fully charged [100%]" means - the battery is currently at 100% of what it is able to achieve. In other words, "Fully charged [100%]" is relative to Full charge capacity.

Sometimes, you can find that cycling through the battery three times** can improve the Full charge capacity a bit.
On at least one of my batteries, the maker recommends doing this every three months. But doing so is using up even more of its remaining life so you can complete this procedure only to find that you are worse off afterwards.

** In other words, loop through this three times -

• remove the AC power
• use up the whole charge by using the computer
• recharge fully

Denis

 

Battery FULL CHARGE CAPACITY Reset

Just wanted to add my findings on this topic. My previous tablet (Windows 10 anniversary at the time) did the same thing only it was only charging to 80%, after running a battery report I found that the full charge capacity was actually reading 20% higher
than the design capacity (which was correct). It eventually just miraculously cleared up on it's own.

I'm back on the boards because I'm having the same problem again with my new tablet I purchased about a month ago. The charge capacity is reading much higher than design capacity but I can't find anyway to reset it.

NAME
Intel Battery

MANUFACTURER
Intel Corp

SERIAL NUMBER
1122

CHEMISTRY
LION

DESIGN CAPACITY
4,300 mWh

FULL CHARGE CAPACITY
11,611 mWh

CYCLE COUNT
48332

 

Full charge capacity of battery decreased

Repeat the steps Dave suggest you other three times.

Also you can uninstall and reinstall battery from device manager before each charge. You can do that:

1. Press WINDOWS + X

2. Click on "Device Manager"

3. Click on "Battery"

4. Right click on your battery

5. Click on "Uninstall device"

6. Repeat steps 4 and 5 for each element on battery list

7. Click on "Detects Hardware change" (monitor icon)