Battery showing false 'time remaining'

Rock2010

Distinguished
Aug 5, 2011
8
0
18,510
0
Hello.
I have bought a new HP tm2t laptop. It's battery backup is quite good but whenever i use it on battery,it always shows a false 'time remaining'. Infact,it shows the 1/4th of the original time remaining. Someone please guide me how to resolve this problem.

Thanks.
 

AntiZig

Distinguished
Apr 6, 2011
1,149
0
19,610
56
well, all you can try to do is go to device manager and try to update the driver for your battery. If windows doesn't find anything automatically, try looking at the manufacturer's support website, there might be some solutions there if this is an identified and widespread problem. Beyond that you can't do much.
 

AntiZig

Distinguished
Apr 6, 2011
1,149
0
19,610
56
Can you please elaborate on your expression of "1/4 of the original time remaining"

If the battery is not fully charged it will not work as long as if it was on full charge

if the battery is several years old, it will not be able to hold charge as well as a new battery

oh and one more thing, windows battery meter is not very accurate
 

Rock2010

Distinguished
Aug 5, 2011
8
0
18,510
0
Laptop is new and battery as well. After using the battery for 2 hours,it showed 50% remaining but 'time remaining' was only 30 minutes. That means, the time which it reflects ,is always the 1/4 of what it should have shown.

Is there a way to resolve this issue?

Thanks.
 

AntiZig

Distinguished
Apr 6, 2011
1,149
0
19,610
56
well no, not exactly. if you used your laptop for 2 hrs for light task, like editing a text document you probably were using very little battery power, but if you're watching a divx movie or something the power consumption goes up and you would only get 30 minutes out of the remaining power. and as I said, windows battery meter is not an accurate tool. It tries to estimate how long you have left given the current battery voltage, but as I described above your consumption of this power changes depending on what you're doing with the computer, plus, there's also such things as battery characteristics that come into play, it might be able to hold charge better at 12.5V giving you something like 20kwhr, but once you drop down to 12.3V it will only get 5kwhr. Windows tries to estimate the consumption based on various sensors, but it can only do so much with just a few numbers.

So, I guess, tldr - time remaining is not an exact science and depends on many many things, so you should treat it as such - an estimate. It could be more, it could be less, it could be exactly on the dot, but noone will guarantee you either. A better estimate is the % of power remaining, because windows will forcefully shutdown the machine at certain % of power remaining rather than 10 minutes remaining.
 

Rock2010

Distinguished
Aug 5, 2011
8
0
18,510
0
Thanks for the explanation..But i think,i couldn't use the correct words to make u understand the exact situation.
Whatever u said,is quite true and i understand that. But when i turn on my old laptop,it shows 2 hours and later on,it keeps reducing depending on the tasks i do. But in this new one,as soon as i turn it on(even before opening any application),it starts showing 1 hour 30 minutes. But in real, it will last much longer than that..upto 4 hours.
So i m sure there is a problem,otherwise i know very well how to understand the 'time remaining' as i have been using laptops for quite a long time.

But if there is no solution to this problem,then i will not pay much attention to this.

Thanks.
 

AntiZig

Distinguished
Apr 6, 2011
1,149
0
19,610
56
well, all you can try to do is go to device manager and try to update the driver for your battery. If windows doesn't find anything automatically, try looking at the manufacturer's support website, there might be some solutions there if this is an identified and widespread problem. Beyond that you can't do much.
 

Rock2010

Distinguished
Aug 5, 2011
8
0
18,510
0
I did the same just now. It showed that the drivers r upto date. I will better ignore it as its not that serious.
Thanks a lot to u for all the support.
 
Thread starter Similar threads Forum Replies Date
CL19 Laptop Tech Support 1
K Laptop Tech Support 1
S Laptop Tech Support 1
N Laptop Tech Support 4
G Laptop Tech Support 5
A Laptop Tech Support 5
N Laptop Tech Support 4
A Laptop Tech Support 1
S Laptop Tech Support 1
H Laptop Tech Support 9
S Laptop Tech Support 1
F Laptop Tech Support 1
F Laptop Tech Support 1
D Laptop Tech Support 1
P Laptop Tech Support 3
S Laptop Tech Support 1
A Laptop Tech Support 2
A Laptop Tech Support 4
D Laptop Tech Support 1
B Laptop Tech Support 1
Similar threads
Solved! Laptop doesn't work without charger plugged in, while battery shows that it's at 0 percent and discharging(Windows 10)
Solved! my Samsung laptop is showing charging icon but the battery percantage is decreasing
Solved! battery runs down below 50 percent and suppose I start it up again, battery status shows low n turn off.
Solved! Hp pavilion 15-cx0056wm do I need new battery, just got it 5 days ago when I plug the charger up a white LED light will show
Solved! "Plugged in, Not Charging" SCHOOL LAPTOP, SHOWING 3 BATTERYS?
My Toshiba satellite laptop wont turn on on battery but it does on direct supply. The battery shows fully charged but as soon
Hi.... My Lenovo laptop sometimes shows the no battery sign then it stops after sometime. This makes it go off sometimes while
battery keeps showing 99% when unplugged
toshiba sat wont turn on.. shows low battery + not charging
Medion Akoya Laptop wont, show any sign of life after battery went flat
i buy a new battery of hp pavilion notebook pc but the system was show bettery not detected
MSI GL62m turned off while running as if battery died, would not turn back on, only shows blue battery light
My laptop shows the charging light but won't boot even without the battery
my pc is not showing current day and time though i have changed a new cmos battery
Laptop won't boot with power connection. BIOS diagnostic reports fine, shows 100% battery
why my laptop is showing No battery is detected
Laptop Battery Showing 0% After Months Of Storage
Dell inspiron 3543 wont charge when plugged in showing no battery present and turns off when charger is plugged out
I have lenovo z50-70 model laptop but energy manager shows weak battery.
my asus x455L doesn't show anything on the screen. any solution for this? battery's non-removable

ASK THE COMMUNITY