- Jul 1, 2011
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Some background; http://lifehacker.com/why-calibrating-your-phone-or-laptop-battery-is-importa-1437221519
Basically there is circuitry in your laptop battery that keeps a value of the measured capacity of the battery, and other data too, not sure what all is stored besides this and model#. Maybe internal resistance data(not visible with software)? You can access the capacity/model#/voltage info with 'hwinfo32' and other software as well.
How does the chip in the laptop's battery pack account for heat loss during charging/discharging within the battery pack? So if I run the battery down from full to empty with full utilization of my CPU and GPU (high power consumption), will the new 'measured capacity' stored in the battery chip read lower than if I had done a slower discharge?
​There is the question of whether this measured capacity is calculated entirely by measuring the power output of the battery pack during discharge but not accounting for self discharge, or accounting for the self discharge by measuring power in to the battery to fully charge it and comparing with energy for discharging and using math to find heat loss (because there is heat loss with charging too).
I assume it is the latter because why would it be such a simple design. Math can help provide accuracy and it's probably a standard on all laptops. With math it may be able to calibrate the battery to some accuracy with just a partial discharge.
​
​I'm mainly curious about draining the battery fast vs slow and if the chip isn't smart enough to realize that more heat loss has occurred if draining fast, and might result in an inaccurate measured capacity especially if you do it repeatedly.
Thanks for any insight!
Basically there is circuitry in your laptop battery that keeps a value of the measured capacity of the battery, and other data too, not sure what all is stored besides this and model#. Maybe internal resistance data(not visible with software)? You can access the capacity/model#/voltage info with 'hwinfo32' and other software as well.
How does the chip in the laptop's battery pack account for heat loss during charging/discharging within the battery pack? So if I run the battery down from full to empty with full utilization of my CPU and GPU (high power consumption), will the new 'measured capacity' stored in the battery chip read lower than if I had done a slower discharge?
​There is the question of whether this measured capacity is calculated entirely by measuring the power output of the battery pack during discharge but not accounting for self discharge, or accounting for the self discharge by measuring power in to the battery to fully charge it and comparing with energy for discharging and using math to find heat loss (because there is heat loss with charging too).
I assume it is the latter because why would it be such a simple design. Math can help provide accuracy and it's probably a standard on all laptops. With math it may be able to calibrate the battery to some accuracy with just a partial discharge.
​
​I'm mainly curious about draining the battery fast vs slow and if the chip isn't smart enough to realize that more heat loss has occurred if draining fast, and might result in an inaccurate measured capacity especially if you do it repeatedly.
Thanks for any insight!
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