How long does it take your battery to wear down?

Hi,
I just got my 2500t on the 23rd, and checked my 6cell battery which has designed capacity 46000mAh, but the full charge capacity is only 45000mAh, which is fine to me,
but after 2 day of using, on the 25th, my full charge capacity drop to 43000mAh, The wear level is 8% in TWO DAYS!
I am starting to worry, with this rate, in one month, my battery is gonna die out.
But the HP battery check program says the battery is in good condition,
Does that happen to all your batteries?
Should I complain this with HP customer service???

Thanks

 

I would keep an eye on the battery. I would also contact HP and find out what the wear level needs to be for them to replace a battery under warranty, then use Battery Eater to test actual battery life under load.

Batteries are rarely, if ever, able to deliver the full power/life promised, and they can wear down quickly (which is why most warranties won't touch them after the first year), but I'd be much more interested in finding out how the change from 45,000 to 43,000 has affected your actual battery life. Does your battery now last 15-30 minutes less than it did two days ago?

Basically, just keep an eye on your battery and find out the wear levels HP needs to see to replace the battery. If the battery hits that wear level in the first year of ownership, make them replace it.

To enhance battery life, try to keep the battery out of your notebook whenever it is either not in use or not being charged. This should give the battery a better overall shelf life (my Inspiron 5100 still gives me 2.75 hours of battery life after four years).

 

I haven't test the difference yet, but I would assume it is about 15 minutes from 45000 to 43000

This is amazing!!!!! still 2.75 hours after FOUR YEARS. So by not put battery in, you mean only put battery in if use battery, otherwise, plug in AC without battery??? Is that dangerous if power is out some how

 

First things first: don't worry about that 8% wear level. It is, in all honesty, probably wrong.

Read this thread for further details on notebook batteries: http://forum.notebookreview.com/showthread.php?t=91846

Essentially, whatever program you are using to check the health of your battery probably isn't calibrated specifically for your battery model. This means you'll get discrepancies between the supposed and actual wear levels.

Secondly, your notebook won't be losing 8% health every two days. The manufacturer (in this case, HP) may have had that particular battery sitting on their shelf for a very long time, in which case the battery cells would begin to degrade on their own. Unfortunately there is nothing that can be done about this as it is simply the luck of the draw.

The following is taken directly from chrisyano's Battery Guide post. It roughly sums up what he went over, but you should really read through the whole thing to understand what is going on inside your battery.

Quick Reference: Simple Guidelines

• Heat is your battery’s worst enemy. Avoid keeping your battery in hot places such as your car during the daytime.
• A full discharge puts more strain on your battery than several partial discharges. You do not need to worry about battery memory with Li-Ion batteries. Get into the habit of recharging the battery when it reaches 10-20%.
• Never discharge your battery to 0% – as this can render your battery useless.
• Calibrate your battery’s fuel gauge by doing a full discharge every 30 cycles. Run the battery to the cut-off point in your notebook to keep the battery’s fuel gauge accurate.
• If you will be on AC power for an extended period of time, you can prolong your battery’s lifespan by removing it and putting it into prolonged storage.
• Prolonged storage should be done with a 40% charge-level and in a cool, dry place. Some experts recommend you place the battery in your refrigerator. Use a sealed plastic bag to keep moisture out if you do this.
• Do not freeze your battery.
• Allow a stored battery to warm to room temperature completely before using or recharging it.

 

Yes, I only put the battery in if I actually want to use the battery. Otherwise, it is sitting on the table (or in the case). I've noticed this also helps the notebook run a lot cooler, which could be one reason I've gotten so much life out of my battery (less time in a hot notebook = better battery life, as mattsesar said).

Honestly, even though it's not good for any computer to suddenly die while running on AC power, it doesn't happen very often, and it's still FAR better than allowing a notebook to die while running on battery power.

 

There is a whole lot to learn
But thanks mattsesar!

I agree, my desktop has been in this situation quite often.
Gonna try it. Thanks