Battery recalibrate ideas
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From: htnakirs on 31 Oct 2009 13:54 I have a Compaq M2000 laptop, about 3 years old. The battery lasts more than an hour, but, the power meter will show critical level within 10 mins of running. I have tried the most common recalibration technique - complete discharge and complete recharge - many times, but there has been no change in this behaviour. I would have let it pass, but the biggest problem is that once the power meter indicates critical level (and the battery LED on the laptop begins to flash), the system will not boot, unless plugged in. Once the system boots, the power can be unplugged, and the system will continue normally for close to an hour on the battery. Any ideas?
From: BillW50 on 31 Oct 2009 14:20 In news:22bfb97d-dc34-4fa2-a50c-e001ccae9624(a)v25g2000yqk.googlegroups.com, htnakirs typed on Sat, 31 Oct 2009 10:54:49 -0700 (PDT): > I have a Compaq M2000 laptop, about 3 years old. > > The battery lasts more than an hour, but, the power meter will show > critical level within 10 mins of running. I have tried the most common > recalibration technique - complete discharge and complete recharge - > many times, but there has been no change in this behaviour. I would > have let it pass, but the biggest problem is that once the power meter > indicates critical level (and the battery LED on the laptop begins to > flash), the system will not boot, unless plugged in. Once the system > boots, the power can be unplugged, and the system will continue > normally for close to an hour on the battery. > > Any ideas? 1) Battery is 3 years old 2) Battery is left in the laptop 24/7 3) Laptop will only run 10 minutes on battery and shutdown If the answer is yes to all in the above, regardless of the power meter reading, your battery is shot. As batteries deteriorate overtime from the heat of the laptop. And power calibration usually relies on the voltage of the battery, not the internal resistance which deteriorates. Laptops consume 20 or more watts of power from the battery. This is a few amperes of current. And a lithium battery with high internal resistance will only function for a short period of time or none at all. The battery should function for much more of the capacity if the current draw is lessened. Although not much you can do to lighten this heavy current draw on a laptop. -- Bill Asus EEE PC 701G4 ~ 2GB RAM ~ 16GB-SDHC Windows XP SP2
From: Larry on 31 Oct 2009 15:56 htnakirs <htnakirs(a)gmail.com> wrote in news:22bfb97d-dc34-4fa2-a50c- e001ccae9624(a)v25g2000yqk.googlegroups.com: > Any ideas? > > Bad battery pack. Replace -- Larry
From: Larry on 31 Oct 2009 15:56 "BillW50" <BillW50(a)aol.kom> wrote in news:hchv5u$h68$1(a)news.eternal- september.org: > 2) Battery is left in the laptop 24/7 > Horseshit. -- Larry
From: BillW50 on 31 Oct 2009 16:13
In news:Xns9CB5A2381E7BAnoonehomecom(a)74.209.131.13, Larry typed on Sat, 31 Oct 2009 19:56:47 +0000: > "BillW50" <BillW50(a)aol.kom> wrote in news:hchv5u$h68$1(a)news.eternal- > september.org: > >> 2) Battery is left in the laptop 24/7 >> > > Horseshit. I have four batteries only two years old that were always left in the laptop. I do my own research. And they were never used on battery power and always on AC and charged. Want to buy them? They are worthless. Yet the ones I left in a drawer are still doing just fine. Go figure, eh Larry? I am still doing research and the ones left in are losing capacity overtime. Anybody can do this research. Just leave one battery in and one battery out. And give it two years and then test the capacity of the two batteries. And the evidence is clear as a bell. -- Bill Asus EEE PC 701G4 ~ 2GB RAM ~ 16GB-SDHC Windows XP SP2 |