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outsider150
Fanfold Paper
Posts: 4
Registered: ‎07-29-2014
Location: Vietnam
Views: 1,206
Message 1 of 8

[W520] How I know Battery Firmware version and downgrade

Hello,

I have W520 .Last week , I auto update  Battery Firmware in "System update" , but now it's not work .

 

I config it  start charging on below 46% and stop charging at 50% 

On my last FW it's work , I can see battery up 50% and down 46% , again and again .

 

But now , i can't see it , my battery only stand on 49% , no down and no up .

 


Sorry for my bad english
Please help me !!

 

 

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 1,161
Message 2 of 8

Re: [W520] How I know Battery Firmware version and downgrade

If you attach the AC adapter when the battery is at 49%, then it will not charge because it is not below 46%. This is the intended behavior.

If the system is charging and discharging between 46% and 50% while plugged in, then this causes extra wear to the battery.

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
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
outsider150
Fanfold Paper
Posts: 4
Registered: ‎07-29-2014
Location: Vietnam
Views: 1,153
Message 3 of 8

Re: [W520] How I know Battery Firmware version and downgrade

@ColonelONeill: I know because i setup it , but this only "my battery only stand on 49% , no down and no up ." when attach the AC adapter 

and "On my last FW it's work , I can see battery up 50% and down 46% , again and again ."

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 1,144
Message 4 of 8

Re: [W520] How I know Battery Firmware version and downgrade

If AC adapter is attached, it should stay at 49% always.

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
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
outsider150
Fanfold Paper
Posts: 4
Registered: ‎07-29-2014
Location: Vietnam
Views: 1,138
Message 5 of 8

Re: [W520] How I know Battery Firmware version and downgrade

really !!
It run by adapter ? , no run by battery ?

Smiley Sad(
Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 1,121
Message 6 of 8

Re: [W520] How I know Battery Firmware version and downgrade

If I understand your situation correctly, then yes. When the AC adapter is attached, it should not run the battery.

 

If the system does not work on battery only, then there is a different problem.


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
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
outsider150
Fanfold Paper
Posts: 4
Registered: ‎07-29-2014
Location: Vietnam
Views: 1,114
Message 7 of 8

Re: [W520] How I know Battery Firmware version and downgrade

Thank you for rep .
Can you answer me " How I know Battery Firmware version and downgrade batterry fw ?"

And can you try it in your W520 ? and confirm it ? I mean try "config it start charging on below 46% and stop charging at 50% "
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Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 1,109
Message 8 of 8

Re: [W520] How I know Battery Firmware version and downgrade

Go to Lenovo Power Manager, go to the battery tab. At the bottom it should say firmware version. I don't think you can downgrade battery firmware versions.

My W520 is set to start charging below 80% and stop charging at 90%. When plugged in between 80% and 90%, it will stay at the same level. When plugged in below 80% it will charge up to 90% and stop. It does NOT go up and down while the AC adapter is attached.

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
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U

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