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Question

HP Battery Recalibration?

by morleech / February 1, 2012 10:39 AM PST

My battery isnt holding its charge very, like it keeps dropping power every minute then it automatically turns on

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All Answers

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Answer
That sounds like
by Jimmy Greystone / February 1, 2012 11:29 AM PST

That sounds like a consumed battery to me. The idea that batteries need to be calibrated is a very outmoded one, that really hasn't been true since Lithium Ion batteries came along. Maybe a bit in the early days, but less and less as time has gone by, to where any laptop from within the past probably 3-5 years, it's completely unnecessary.

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Answer
How old is it?
by R. Proffitt Forum moderator / February 1, 2012 12:07 PM PST

If past 18 months the battery is likely used up. These are only 300 cycle units so if you use it, it's only a year of life if used daily.
Bob

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2 years
by morleech / February 1, 2012 1:52 PM PST
In reply to: How old is it?

around 2 years but only like few hours per week using battery
the rest of time i power it with AC adapter

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Still over the usual 18 month life span.
by R. Proffitt Forum moderator / February 2, 2012 1:42 AM PST
In reply to: 2 years

On the low end of expected life span of 300 cycle batteries is 300 cycles (we covered that) but another spec you may find is 18 months being bandied about. This battery is past that too so it may be spent.

There are other factors but the test is to slip in a new battery and test.
Bob

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Desperate measures
by richteral / February 4, 2012 12:24 AM PST
In reply to: 2 years

It may well be on its last legs. Some people say that to attempt rejuvenation, wrap it airtight and put in freezer overnight. Make sure there is no condensation on the battery before you put it back in the laptop.
Never tried it myself, since it seems easier hitting the Ebay button to pick a replacement at a reasonable price. The Hong-Kong supplied battery now in my HP runs better than the original, having lost a very small fraction of max. capacity over 3 years.

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Battery life when plugged in?
by Jelly Baby / February 4, 2012 7:18 AM PST
In reply to: 2 years

Using a lap-top plugged in seems to do more damage to a battery than unplugging it and taking it on the road. There's no reason why that should be the case with new battery technology but it does seem to be that my laptop, plugged in most of the time as a music server, has a shorter battery life when I do take it with me than my netbook, which is charged overnight and used on it's battery for most of the day. Both are about the same age, the lap-top battery now barely lasts 20 minutes from fully charged whereas the netbook battery still seems as good as new.

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Seems untrue.
by R. Proffitt Forum moderator / February 4, 2012 7:30 AM PST

At the office we've had laptops plugged in for years. Just last month one that had been plugged in for FOUR YEARS was changed out and the battery time came in at about 75% of new.

Bob

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See
by richteral / February 5, 2012 12:01 AM PST

my post above on that - the laptop is plugged in most of the time.

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Answer
Tried This?
by Grif Thomas Forum moderator / February 2, 2012 2:37 AM PST

In order to correct problems with the battery's power management software, follow the steps below.
1. Access the "Device Manager" .
2. Expand the Batteries category.
3. Under the Batteries category, right-click the "Microsoft ACPI Compliant Control Method Battery" listing, and select Uninstall .
WARNING: Do not remove the Microsoft AC Adapter driver or any other ACPI compliant driver.

4. Then shut down the computer, unplug all power cords, remove the battery, then depress the power button for 30 seconds. Replace the battery making sure all connections are solid, then plug in the power cord.
5. Restart the computer and Windows will re-detect the "new" hardware and install the correct drivers for the battery hardware.

Or...If the devices aren't found and installed on restart...
On the Device Manager taskbar, click Scan for hardware changes .
Alternately, select Action > Scan for hardware changes .
Windows will scan your computer for hardware that doesn't have drivers installed, and will install the drivers needed to manage your battery's power.

This should cause the battery to charge correctly again...UNLESS the charger is faulty.. In that case, replace it. Or...as the others have said, if the battery has simply gone bad, then it won't make a difference and the battery will need replacement.

Hope this helps.

Grif

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