New Mac's battery charge percentage drop quick using AC adaptor 24/7, should I be worried?

I use my mac with AC adaptor 24/7, but the battery capacity drop 4% in 3 days... should I be worried? Is it some kind of hardware problem?

Hi,
Well, it's only England, so no extreme temperatures, but I can see my breath in the morning when the heater hasn't been on! I didn't think it would be too cold, but seeing some other posts wondered if that could be a contributing factor, being the unusually cold weather here over the past two/three weeks.
I'm just panicking in case my battery or charger is about to go, just when I really need them.
I'll calibrate the battery -- which is something I wasn't aware of until reading this forum today.
The problem is, I'm traveling to the Caribbean to the opposite temperature problems may arise -- to hot and humid. I think I'll buy an extra battery to be on the safe side.
At least neither of you has said: 'oh dear, that sounds like a failing battery.' So I'm a little less panicked now. I'll keep an eye on it and post back if anything dire happens over the next few days.
Thanks for taking the time to respond.
Cheers,
Tracy

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Hi tianfu88,
For further assistance regarding your concern, please contact the Sony offices/Sony representative offices nearest to your place of residence in Asia Pacific region http://www.sony-asia.com/countryselector.html?hpid=countryselector:AsiaPacific. Due to proximity, they are in a better position to respond to your questions or concerns.
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>Joffrey
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My friend gave me his old touch, however it won't sync with my new mac but it charges the itouch so i was wondering how i could sync it to my iTunes.

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also
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On seeing your reply I realize I misread it the first time. I apologize for any confusion that might have caused....
Now I am looking at the menu bar battery level indicator and it shows the MBP is plugged in but the battery percentage of charge is dropping and after many hours is at 98% and it is not charging to bring it back to 100%.
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[SOLVED] Battery charge percentage reports as 0% in xmobar

I have an ASUS U36JC laptop running Arch. I'm using xmobar to display information about the battery charge.
The estimated remaining lifetime in hours reports correctly, but the charge percentage always reports at 0%.
The charge level is reported correctly by acpi:
$ acpi
Battery 0: Discharging, 69%, 03:24:48 remaining
Listing /sys/class/power_supply/BAT0 gives:
$ ls /sys/class/power_supply/BAT0
alarm device energy_full_design manufacturer power present status technology uevent voltage_now
cycle_count energy_full energy_now model_name power_now serial_number subsystem type voltage_min_design
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POWER_SUPPLY_STATUS=Discharging
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-ion
POWER_SUPPLY_CYCLE_COUNT=0
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=14880000
POWER_SUPPLY_VOLTAGE_NOW=15529000
POWER_SUPPLY_POWER_NOW=16335000
POWER_SUPPLY_ENERGY_FULL_DESIGN=84000000
POWER_SUPPLY_ENERGY_FULL=81750000
POWER_SUPPLY_ENERGY_NOW=54600000
POWER_SUPPLY_MODEL_NAME=U36--56
POWER_SUPPLY_MANUFACTURER=ASUSTek
POWER_SUPPLY_SERIAL_NUMBER=
And my xmobarrc is:
Config { font = "-misc-fixed-*-*-*-*-10-*-*-*-*-*-*-*"
, bgColor = "black"
, fgColor = "grey"
, position = Top
, lowerOnStart = True
, commands = [ Run Network "eth0" ["-L","0","-H","32","-n","green","-h","red"] 10
, Run Cpu ["-L","3","-H","50","-n","green","-h","red"] 10
, Run CpuFreq ["-t","<cpu0>"] 10
, Run Battery ["-t","<left>% / <timeleft>","-L","50","-H","75","-h","green","-n","yell","-l","red"] 10
, Run ThermalZone 0 ["-t","<temp> C","-L","40","-H","79","-h","red","-n","yellow","-l","green"] 10
, Run Memory ["-t","<usedratio>%"] 10
, Run Swap ["-t","<usedratio>%"] 10
, Run Date "%a %_d/%m %H:%M" "date" 10
, Run StdinReader
, sepChar = "%"
, alignSep = "}{"
, template = "%StdinReader% }{ %cpu% / %cpufreq% | M %memory% * S %swap% | %eth0% | %battery% ; %thermal0% | <fc=#ee9a00>%date%</fc>"
Thanks,
Last edited by maw09 (2012-02-08 05:29:47)

maw09 wrote:
Listing /sys/class/power_supply/BAT0 gives:
$ ls /sys/class/power_supply/BAT0
alarm device energy_full_design manufacturer power present status technology uevent voltage_now
cycle_count energy_full energy_now model_name power_now serial_number subsystem type voltage_min_design
Try adding -c "energy_full" to the battery plugin args.
You can also add -f "/sys/class/power_supply/AC0/online" if you don't have proper AC status in xmobar.
http://projects.haskell.org/xmobar/#sys … or-plugins

How come my mac's battery charges fast and drains fast as well?, How come my mac's battery charges fast and drains fast as well?

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New Mac's battery charge percentage drop quick using AC adaptor 24/7, should I be worried?

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