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TripleX1
Token Ring
Posts: 65
Registered: ‎06-13-2016
Location: GB
Views: 470
Message 1 of 10

X1v4 possible high battery wear?

Just happened to take a look at the battery stats of my May-bought Carbon X1 v4 (20FB) - so 5 months old or so - to find battery wear is 14%:

 

Battery Name 00HW028
Manufacture Name LGC
Power State Charging, AC Power
Current Capacity (in %) 91.6%
Current Capacity Value 41,160 mWh
Full Charged Capacity 44,940 mWh             <- down to ~45Wh
Designed Capacity 52,260 mWh
Battery Wear Level 86.0%
Voltage 17,196 millivolts
Charge/Discharge Rate 18021 milliwatts
Chemistry LiP

 

Is is the kind of stats I see on the almost 3-year old X1 v2! Does Lenovo still consider 20% wear within a year "defective" battery?

 

What kinds of wear do people see on their X1 v4?

 

PS. Using original 45W chargers as supplied with laptop, not higher power ones.

 

Thanks!

lcarron
Blue Screen Again
Posts: 20
Registered: ‎06-06-2013
Location: US
Views: 377
Message 2 of 10

Re: X1v4 possible high battery wear?

How many charge/discharge do you have on that battery?

TripleX1
Token Ring
Posts: 65
Registered: ‎06-13-2016
Location: GB
Views: 373
Message 3 of 10

Re: X1v4 possible high battery wear?

I have not installed any of Lenovo's 'utilities' on any of the X1s and they don't report battery cycles through the standard ACPI/Windows interface. Except the Lenovo PM driver there is nothing specifically Lenovo installed which seems OK to me?

 

In any case, assuming worst-case of 1 cycle/day - since it is 5 months old - say 150 cycles surely that is not 20%? Neither the X1 v2 or X1 v3 show similar wear and are respectively 2 and 1 years older.

 

I'm just asking what number of cycles and wear do other X1 v4 owners see before contacting Lenovo?

lcarron
Blue Screen Again
Posts: 20
Registered: ‎06-06-2013
Location: US
Views: 343
Message 4 of 10

Re: X1v4 possible high battery wear?

My baterry is having 120 cycles at her belt and I already lost 12% of capactity at 45,910 mWh. I also do not think the counter is taking in account the small charges and discharges.

To you point yes the battery do not last very long. Is it normal? I really do not know.

 

TripleX1
Token Ring
Posts: 65
Registered: ‎06-13-2016
Location: GB
Views: 337
Message 5 of 10

Re: X1v4 possible high battery wear?

Thank you for replying, very useful.

 

I get what you're saying - but having still an X1 v2 and v3 with original batteries that are much older and don't show this kind of wear with similar usage must mean the new battery in v4 either wears at a higher rate or the data returned is inaccurate?


The v2 battery holds so well - I was going to replace it with v3's 50Wh one but there is no need; at this rate the v4 battery will need to be replaced next year - just 1 year after purchase???

TripleX1
Token Ring
Posts: 65
Registered: ‎06-13-2016
Location: GB
Views: 294
Message 6 of 10

Re: X1v4 possible high battery wear?

Well here we are a 5? months later and wear is now 25%:

 

Description    Value    
Battery Name    00HW028    
Manufacture Name    LGC    
Serial Number      215    
Manufacture Date        
Power State    Charging, AC Power    
Current Capacity (in %)    45.2%    
Current Capacity Value    17,650 mWh    
Full Charged Capacity    39,020 mWh       <--- SEE THIS
Designed Capacity    52,260 mWh    
Battery Wear Level    74.7%                          <--- SEE THIS
Voltage    16,088 millivolts     
Charge/Discharge Rate     28668 milliwatts     
Chemistry     LiP    
Low Battery Capacity (1)    200 mWh    
Low Battery Capacity (2)    1,951 mWh    
Remaining time for charging the battery (Estimated)    00:48:20    
Total  time for charging the battery (Estimated)    01:27:37

 

I guess I have to see what Lenovo support has to say about this...

lcarron
Blue Screen Again
Posts: 20
Registered: ‎06-06-2013
Location: US
Views: 287
Message 7 of 10

Re: X1v4 possible high battery wear?

 
lcarron
Blue Screen Again
Posts: 20
Registered: ‎06-06-2013
Location: US
Views: 287
Message 8 of 10

Re: X1v4 possible high battery wear?

Hi,

 

You should reveal the cycle count to have the full story.

TripleX1
Token Ring
Posts: 65
Registered: ‎06-13-2016
Location: GB
Views: 277
Message 9 of 10

Re: X1v4 possible high battery wear?

As I mentioned before - I'd love to - but Lenovo's ACPI (smart) battery interface does not forward that information to Windows - don't take my word for it - run any 3rd-party utility you like and if you see "cycle count != 0" I'll eat my hat! Or write own app - the interface has been there for decades.

 

The only way to see this information is installing Lenovo's own utility suite which I am not keen on installing for obvious reasons (will have to image system to clear). Other makes have no problem providing cycle count through the standard Windows battery interface, Lenovo keeps it proprietary for whatever reason.

 

In any case: Lenovo tech absolutely require RDP + Lenovo's set of utilities to "certify the information is accurate". He did not have an answer as to why the battery/BIOS would report wrong information to Windows.

 

Even if the battery had 1 cycle/day so 6m x 31 = 186 cycles - if that is ~25% is the battery rated just over 700 cycles???

 

Still does not explain how the older X1 v2 nearly 3 years old that I've been using before upgrading has similar wear after so many years, that battey would be rated 4,000 cycles?

TripleX1
Token Ring
Posts: 65
Registered: ‎06-13-2016
Location: GB
Views: 260
Message 10 of 10

Re: X1v4 possible high battery wear?

Here are the battery stats of the 3-year old X1 v2, original battery naturally, will get the 2-year old X1 v3 as well:

 

Description    Value    
Battery Name    45N1701    
Manufacture Name    SONY    
Serial Number    11276    
Manufacture Date        
Power State    Charging, AC Power    
Current Capacity (in %)    17.3%    
Current Capacity Value    6,540 mWh    
Full Charged Capacity    37,800 mWh    
Designed Capacity    44,850 mWh    
Battery Wear Level    84.3%                            <-- SEE HERE
Voltage    15,606 millivolts     
Charge/Discharge Rate     23908 milliwatts     
Chemistry     LiP    
Low Battery Capacity (1)    200 mWh    
Low Battery Capacity (2)    1,890 mWh
Number of charge/discharge cycles    0

 

So 15% wear (allegedly) in about 3 years of very similar usage.

 

Compare that to 25% wear of v4 after 6 months usage?

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