New
#21
See if this one is more useful:
How to Prolong Lithium-based Batteries - Battery University
JohnD
Laptop Battery, Does It Hurt the Battery to Use External AC Power?
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New #22
these days the batteries are smart and always keeping the laptop plugged in will not ruin the battery because of overcharging. however, in the end the battery will die and it will finish quickly and that will happen no matter what you do
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New #23
Thanks - good link.
My HP Probook has a BIOS option to limit charging to 80% to prolong battery life. The article confirms that limiting charging / max voltage in this way reduces battery fade over many charge cycles. Quote A laptop battery could be prolonged by lowering the charge voltage when connected to the AC grid. To make this feature user-friendly, a device should feature a “Long Life” mode that keeps the battery at 4.05V/cell and offers a SoC of about 80 percent. One hour before traveling, the user requests the “Full Capacity” mode to bring the charge to 4.20V/cell.
If you buy an electric car, beware the article implies you will lose 15-25% of the battery's energy storage capacity after c. 200 discharge / charge cycles!
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New #24
Are you referring to "Smart Battery"?
If so I see it as an option in the BIOS.
HP never voluntarily suggested its use (they were never asked about the feature).
One battery had warranty replacement (3 year warranty).
The replacement is still in its shipping box.
The computer has been used as a desktop replacement.
I'm wondering about battery lifespan (never used in its shipping box compared to 80% charge in the notebook/mobile workstation)
How did you get info?
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New #25
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New #26
This opened from a link within Battery overview:
https://support.microsoft.com/en-gb/...ry-saving-tips
Did not see the features for Advanced / Power Management Options / Battery Health Meter / Maximise Battery Health
and did not see options in the BIOS.
This is HP software for workstations. It allows changing BIOS settings from within the software.
If it is of interest see if it can work on your probook.
https://www8.hp.com/us/en/workstatio...e-advisor.html
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New #28
Hello @Try3,
I've followed your instructions and sent below a screenshot and an attachment (.html zip).
Note that charging reached up to 90% in about 1h 50min (11:50 local time) and then seemed to stay there.
As you can see, I had to unplug/plug power a few times to speed up the process.
I think, it's not bad for a (not used) 11 years old battery.
Thank you for the tip!Last edited by HeM; 03 Nov 2019 at 07:34.
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New #29
HeM,
I always regard the significant result as being the comparison between the Fully charged capacity {which means capacity when it was last fully charged} and Design capacity levels. In your case, that is 49423 / 52800 = 94%.
Given that I can also see in your table that you took it up to a very high level of charge {99%} 48972mWh at some stage, I think you can rely on the result. Quite an amazing level of preservation.
Denis
Quote
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