how fully does your battery charge?

My less-than-one-month old dv9500t doesn't seem to charge up all the way. It sits permanently on my desk, I don't carry it around so not a big deal, just a little bizarre. Only 4448 mAh out of 6000. This is how old worn out batteries behave, but again, my whole laptop is brand new:

$ cat /proc/acpi/battery/BAT0/info
present: yes
design capacity: 6000 mAh
last full capacity: 4448 mAh
battery technology: rechargeable
design voltage: 14800 mV
design capacity warning: 227 mAh
design capacity low: 137 mAh
capacity granularity 1: 10 mAh
capacity granularity 2: 25 mAh
model number: Primary
serial number:
battery type: LION
OEM info: Hewlett-Packard

 

how're you getting that battery info?

 

$ cat /proc/acpi/battery/BAT0/info

Just like it says.

 

And put it where----jeez help out a little

 

6 months old nc6400.

~$ cat /proc/acpi/battery/C1BA/info
present: yes
design capacity: 3846 mAh
last full capacity: 3846 mAh
battery technology: rechargeable
design voltage: 10800 mV
design capacity warning: 193 mAh
design capacity low: 39 mAh
capacity granularity 1: 100 mAh
capacity granularity 2: 100 mAh
model number: Primary
serial number: --
battery type: LIon
OEM info: Hewlett-Packard

 

I put my battery into my laptop and plug it into 110v AC. My laptop sits on my desk, always on AC, like a desktop. I don't put it on my lap or anywhere else.

Hmmm yours looks nearly full. Sounds like maybe I have a defective battery or something. Or hp 'accidentally' slipped me a crufty old used one.

 

Lupin,

Come on. The guy wants to know how you implement that script. I kinda want to know too.

Question: EXACTLY how do you test the battery as you have done. It would go a long way to answer your question as well.

OK, you have listed an obscure set of characters, which woud seem to be an address with switches, or a script name, or ????

 

No scripts, no black magic or mystery here guys. It's one command. A single command. You type it. With your keyboard. Use your fingers for that. I know the command line can be scary and confusing to some folks, but this is just a single command here, come on.

cat /proc/acpi/battery/BAT0/info

If you're using Windows OS, you'll need a Live CD, something like this: http://www.knopper.net/knoppix/index-en.html

 

Huh? It's part of the acpi module in Linux.

Nvm, lupin beat me to it.

 

I just tried something. I unplugged the laptop, fired up a multiplayer game of Quake 3 and played until the laptop shut off on its own, effectively draining the battery all the way. I've never run it down to empty before. Plugged it back in and it's charging now, we'll see how full it gets this time around.....

 

he's using Linux

anyway, im eager to find out the results as well. i have a dv9500t too

 

Just let the battery run down again and charge fully overnight. It's a step lower than before now, 4064 mAh.

Time to run hp's utility and call them to open an RMA case I think.

 

oh wow... damn. mine is lesser too now

 

Call up HP. There are a number of faulty batteries released by HP recently. I think you have a limited warranty on batteries, but it only covers defects. Boot to Windows and run this app:

ftp://ftp.compaq.com/pub/softpaq/sp32001-32500/sp32299.exe

HP won't consider replacing it unless it fails their proprietary test, and even then, the warranty doesn't cover "natural capacity deterioration", but I think the level of deterioration in your case isn't "natural".

 

i used a program called "NHC" and i found that my brand new battery is 22% worn out..... meaning it will only charge 88% of full capacity.

 

Dude... 78% of full capacity. ;-)

 

I got the same response from Everest. HP was good enough to send me a warranty replacement because I was getting same wear indication. When I got the new one, I charged it to 100% and immediately verified the results, same thing 24% wear. So either the battery board calibration is not set up correctly, or everest is misreporting. Either way, I get around 2 hours 20 minutes on a 6 cell battery on maximum battery savings with screen on the dimmest setting.

The 12 cell runs just shy of 5 hours on max battery.

Hope this helps.

Chris

 

haha yeah ur right... this damn battery made me forget.... or my brains capacity is now 78% of what it used to be