Software update: FP4.FP4D.A.163.20220826

Do you mean the ability to limit the maximum charge.? That is not caring for the battery although it indicates a concern for the battery’s longevity.

‘Extremes’ of heat and cold can damage the capacity of a battery but limiting the maximum charge does not make much of a difference to the heat generated whilst charging and transferred heat from CPU workings etc. and ‘excessive’ sunlight may cause more.

When charging rapidly heat can be generated but this is worked into the design and at the top end the charging rate is slowed significantly to ensure safety and longevity but this is not usually the ‘hottest’ charging period.

There is the concern for battery longevity which is vaguely portrayed as ‘Good’ via the default monitor. This monitor however is a calculation based upon the maximum charge registered with an average of power used over a specific time. Hence a battery calibration is useful to know the ‘real’ capacity. However the battery status doesn’t show the remaining capacity apart form the ‘Good’

Here’s an experiment I am undertaking with a new Framework laptop running Windows 11

I can monitor the amount of cycles and the amount of wear, apparently :slight_smile:

I started by setting the maximum charge level to 78% in line with the idea that full charges damage the battery.

The results are intersesting.

I see the ‘wear’ on the battery change from day to day it is volatile.
I also have a count of the cycles used ( a cycle being the equivalent of a full charge or two 50% charges)

Once I had apps to monitor the battery I noticed that although I had restricted the charge rate to 78% the wear was much higher than I expected so I calibrated the battery.

Over the last 7 months each calibration leads to a greater capacity and hence less 'assumed ’ wear. To do this I run the battery down until an auto power off and then charge to 100%. After a few day I then set the rate to 78% again.

Here is a graph of the last few months that shows the results.

NOTE: Each time I do a calibration the wear is recored as lower

The drop at the end of August and September is where I ‘calibrated’ the battery

Back in May the ‘wear’ was 7.4%. The blue linear line was ascending then.

So battery care isn’t as simple as information passed around.