Battery problem (Acer f 15 f5-573g)

I just bought an Acer laptop a month ago.

this computer ,well , acts kind of weird . the battery full charge capicity changes like crazy (I check using HWmonitor,BatteryMon and powercfg/batteryreport in cmd-all three give the same result).

sometimes it goes up, sometime goes down . from 1% lost in full charge to 3% and back to 1%. 1% in one month means I will lose only about 12% in a year ,but 3% is a different story . and more ,in each battery report made by powercfg/batteryreport ,there is a chart called Battery capacity history .Here is one from July 28th :

Battery capacity history

Charge capacity history of the system's batteries

PERIOD	FULL CHARGE CAPACITY	DESIGN CAPACITY
2017-07-06 - 2017-07-13	60,403 mWh	61,320 mWh
2017-07-13 - 2017-07-20	60,293 mWh	61,320 mWh
2017-07-20	60,184 mWh	61,320 mWh
2017-07-21	60,422 mWh	61,320 mWh
2017-07-22	60,181 mWh	61,320 mWh
2017-07-23	59,929 mWh	61,320 mWh
2017-07-24	60,155 mWh	61,320 mWh
2017-07-25	60,729 mWh	61,320 mWh
2017-07-26	60,729 mWh	61,320 mWh
2017-07-27	60,729 mWh	61,320 mWh

and here is one from today ,July 31st : Battery capacity history

Charge capacity history of the system's batteries

PERIOD	FULL CHARGE CAPACITY	DESIGN CAPACITY
2017-07-07 - 2017-07-14	60,403 mWh	61,320 mWh
2017-07-14 - 2017-07-21	60,293 mWh	61,320 mWh
2017-07-21	60,248 mWh	61,320 mWh
2017-07-22	60,422 mWh	61,320 mWh
2017-07-23	59,990 mWh	61,320 mWh
2017-07-24	59,846 mWh	61,320 mWh
2017-07-25	60,557 mWh	61,320 mWh
2017-07-26	60,729 mWh	61,320 mWh
2017-07-27	60,729 mWh	61,320 mWh
2017-07-28	60,593 mWh	61,320 mWh
2017-07-29	59,991 mWh	61,320 mWh
2017-07-30	60,080 mWh	61,320 mWh

two charts showing different results.

and here is battery full charge capacity reported in July 28th

Battery report

COMPUTER NAME	DESKTOP-N8FN7PK
SYSTEM PRODUCT NAME	Acer Aspire F5-573G
BIOS	V1.23 01/16/2017
OS BUILD	15063.0.amd64fre.rs2_release.170317-1834
PLATFORM ROLE	Mobile
CONNECTED STANDBY	Not supported
REPORT TIME	2017-07-2806:47:32

Installed batteries

Information about each currently installed battery

	BATTERY 1
NAME	AS16B8J
MANUFACTURER	LGC
SERIAL NUMBER	6763
CHEMISTRY	LION
DESIGN CAPACITY	61,320 mWh
FULL CHARGE CAPACITY	59,929 mWh
CYCLE COUNT	-

it's also different from the chart made on July 31st above ?

I have made a lot of these everyday, a few per day, battery capacity always changed when discharged ,like downto 35% or less.

please answer me if this battery is faulty and need replacement .

thanks.

[edited for privacy-please do not post personal or unique information such as but not limited to full names, email addresses, phone numbers, full serial numbers, etc.]

Accepted answers

All comments

brummyfan2

Hi,

I don't think that your battery is faulty, it continuously adjusts the readings according to the usage, you shouldn't drain the battery completely before start charging(check with my settings), you can also calibrate the battery for accurate readings, follow the instructions in the link below for calibrating manually.

https://www.howtogeek.com/172271/how-to-calibrate-your-laptops-battery-for-accurate-battery-life-estimates/

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Curious_user

thank you for answering.

I tried that already ,and also tried battery reset. Does your battery behave the same ? if you are not sure could you test it for a few days? I would be vary happy if you could help.

brummyfan2

Hi,

No problem, I will have to check and let you know as my laptop connected to mains most of the time.

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brummyfan2

Curious_user wrote:
thank you for answering.
I tried that already ,and also tried battery reset. Does your battery behave the same ? if you are not sure could you test it for a few days? I would be vary happy if you could help.