Not getting 3 hours from my battery!

I think I should share this with you.


I have a v2110 (which originally had a celeron 1.3 in it, upgrade to p-m 1.5)

My friend has a dv4040, which has a p-m 1.73

We have the same battery (the 4.4aH ones).

Before, when I had my celeron-m inside, I was getting 2h30 battery with the screen dimmed and wi-fi off. Enabling wifi and having the screen at max brightness, I was getting just over 2h00.

Using the same battery, and the new p-m 1.5, with wifi off and screen dimmed, I am now getting up to 4h30. Wifi enabled and screen at max brightness, I'm getting 3h00.

Using CHC, at the lowest power settings, my whole laptop is consuming roughly 14,5w. My friend's is hovering around 11,5w. This is logical, since i'm using a 855 chipset, and he his using a i915 (the i915 is known for being more power friendly compared to the first version).

* An important note, I am undervolted, and he is not. I'm still consuming more power than his laptop (due to the chipset, probably)

BUT ... he is not getting near 4h30 at all with the most aggresive settings like I did!!

CHC reports that my battery has 62000mWh at 100%, and his battery is being reporter at 45000mWh.

These measurements were done AFTER we both calibrated our batteries (deep discharge in bios, and full charge)

Just for the heck of it, we exchanged our batteries (maybe it's the computer that isn't reporting the battery correctly, or something like that ?). NOPE. Same results (actually, the poor battery life followed the battery). He was now getting 4h45, and I was getting 3h45. Which is correct for him, and low for me

FYI, he bought his laptop in september, and mine is from october. So they're still quite new.

He consider exchanging the battery.


End of story

 

With mine, I just pumped out about 3 hours and 10 min, using word/excel and playing music through winamp. Played about 10 minutes of DVD as well (the movie was already on the HD). all this yesterday in the school library. Almost full brightness and wireless on. I'm a happy camper

EDIT sorry I forgot to mention that the whole period, I was underclocked to 997 mhz.

 

You've done that with the laptop in your sig ??

Never knew athlon 64 were so good, especially with a such big screen and a dedicated video card .... ????

 

Next time I will take a screen shot of the batt meter when it's almost dead. I'm sure not everyone believes me lol

 

Hey, just found this forum

I got my laptop: v2310CA from compusmart (im canadian) less than 6 months ago. My wear was 37% from hp's battery test, 60.0% from RM Clock Utility

I decided to go for real life test, so fully charged, took off wifi and lowered screen brightest to lowest, then ran prime95 Torture Test: force stand-by in 34min
I thought that was absolute crap, so i tested "moderate" use with mp3 playback: force stand-by in 63min
These times were crap, so i called in, the tech guy was retarded and kept on trying to glaze over important info (and yah, they don't recognize anything but their hp battery test utility). Finally, I asked to be directed to somehow who knew wtf they were talking about, but noone was available. So here I am, ranting over this crappy-ass battery life and waiting to be called back.
Seirously, i am at a loss of what to do.

 

Are you guys testing the battery till the notebook actually dies, or just when it stand-by/hibernates? Because of this abnormal wear problem that Mobilemeter and other programs report, I would turn off the automatic stand-by and hibernation when you guys are testing. Windows uses the same info that the programs pull from the battery, so Windows will stand-by/hibernate prematurely because it thinks the battery is gonna die soon when it isn't.

And don't do these battery tests under load (i.e. Prime95 or the Classic test in Battery Eater Pro). Those aren't representative of the 'real life' battery times, any laptop other than the ones with ULV CPUs are gonna get piss poor battery life under load. Especially the Classic BEP test, it loads both the CPU and GPU!

 

if you're testing battery life, why would you torture test it?

it's very simple.

charge to 100%.

use it like you normally would.

that's your battery time.

 

HP's batteries do not report correctly their wear levels. There's something messed up because all programs detect a much much larger maximum capacity than the actual. The wear level is the percent of maximum capacity that cannot be charged, so the wrong max capacity gives wrong high wear level.
You should get about 2:30h with the 6 cell in real life tests.

 

Hey guys

Thanks for the feedback. and yah, i was a bit unrealistic testing under a stress test, but the light/moderate use (web surfing, typing up some stuff) it died in ~1hour, so i figured that something was wrong. And i think its turning out for the best. After i called hp, there was a phone guy who tried to vamboozle me, but after i asked to speak to his superior, i got a call back today, and they offered to replace the bad battery for no charge.
The new battery is on the way.
So, after 1hour of talking to online technician and run-of the mill phone technician (honestly we were going in circles), and then 5 minutes with one of their higher level customer service people, i'm getting a battery.
Seriously guys, if ur battery is reading some serious damage (it has to be with hp's battery test utility otherwise they don't recognize) and you are still within ur one year limited warranty, call in.

 

Check the capacity of your 6-cell battery. If it is above 40000kWh, it is good. The full capacity should be around 45000kWh but it was set to ~58000kWh by mistake. A 12 cell should be around 90000kWh at full and this issue is not found in 12-cell.

 

Haha, check ur units. You mean 40, 45, 58 and 90Wh. k = kilo, prefix for 1000. A 45,000,000Wh battery would power the laptop for 285 years...