How come my laptop battery goes flat when it has been switched off for a few days? This doesn't happen to my mobile phone when that's switched off. Have I got a faulty battery?
2006-10-11 02:04:54 · 13 answers · asked by Richard C 2 in Computers & Internet ➔ Hardware ➔ Laptops & Notebooks
Should have said- the Laptop is an NEC model and only 3 months old. Definitely not in stand by, and only switched off a few days.
2006-10-11 02:28:34 · update #1
When you switch of your lap top computer the demand on the battery does not drop to zero as you would expect. This is because power is switched on and off electronically, the upshot of this is that there is a constant current drain, albeit a very small one, on your battery. There could be a fault in this part of your computer causing current drain to go up.
Having said that, a more likely scenario is the battery itself. If it is a Ni-cad battery, they develop a memory effect (although most manufacturers will say this is not so) whereby if they are not fully discharged before be recharged, they will only have a capacity equivalent to the amount of energy put in from the point at which recharging started. (sounds complicated doesn't it). If it is a NiMH type battery which does not suffer from memory effect, it could be that it has reached the end of its life. These batteries, and indeed NI-cad's if treated properly, have a charge-recharge life cycle of several hundred times (if my memory serves me correctly). As they reach the end of their lives their internal resistance starts to go up which affects the amount of energy that you can get in and out. I suspect that is what is happening to yours. Hope this helps!!!!! Mobile phone batteries are generally lithium based and are designed to give out a modest amount of current for long periods of time and are generally not subject to the limitations of Ni-cad and NiMh batteries and the memory effect.
Some battery systems have a current limiting device fitted to prevent large currents being drawn. If yours has one this could have become faulty.
A word of caution. Ni-cad and NiMH batteries like Lead Acid batteries, can give out very high levels of current, even small ones, in the order of tens to hundreds of amps. The current that will flow is only limited by the resistance of the circuit and its wiring and the internal resistance of the battery.Do not under any circumstances short the terminals of, or tamper with these batteries in any manner as they and any circuit to which they are attached will get very hot very quickly and could well catch fire. You have been warned!!!!!
2006-10-11 02:49:23 · answer #1 · answered by Anonymous · 1⤊ 0⤋
If your laptop is not more the 18 months old then it may have developed a fault.
The Battery may have developed a fault.
If the laptop is more than 3 years old then the battery probably needs replacing
2006-10-11 02:15:59 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It sound to me that you may have a fault with the batturt/laptop.
However rechargable batterys do lose there charge over time. But it sounds like the first option is the problem for you as it losses charge quickly so best get it checked out.
2006-10-11 04:08:30 · answer #3 · answered by ? 4 · 0⤊ 0⤋
This sounds like a circuit problem in your laptop. I hate to say it, unless you get it fixed, you might have to remove the battery after powering down. The circuit problem is probably in the laptop and not the battery.
2006-10-11 02:08:36 · answer #4 · answered by Anonymous · 0⤊ 0⤋
initially, whilst battery is going flat, the laptop is going on standby. The determination (fonts and icons get extra desirable) using fact of determination transformations using interest. additionally it is going decrease back to prevalent whilst interest is exited. If it does not then after rebooting it would and if it nevertheless does not only circulate to settings and make the transformations
2016-10-19 04:58:06 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Send it back it could be any number of things.
Battery not initially charged correctly.
A faulty battery plate.
Switch contact not in the live side and its leaking to earth.
Switch is only connected to display.
A condenser shorted.
Shut down mode line faulty.
Shutdown-Sleep wires crossed.
and and and
2006-10-11 03:27:11 · answer #6 · answered by Anonymous · 0⤊ 0⤋
1
2017-02-19 17:43:27 · answer #7 · answered by ? 4 · 0⤊ 0⤋
I've found that if I disconnect it from the wall, the battery stays charged...If I forget, then the battery goes dead...Especially if it is in hibernation mode...Hope this helps...
2006-10-11 03:00:47 · answer #8 · answered by Anonymous · 0⤊ 0⤋
I'd suggest taking it to a repair shop or calling the customer service hotline!
2006-10-11 02:18:52 · answer #9 · answered by supersmashmeleer 1 · 0⤊ 0⤋
check your battery, mayb didn insert correctly.
second,mayb your laptop didn go shut down but stand by or hibernate mode.check it properly
2006-10-11 02:15:27 · answer #10 · answered by Tiger Long 2 · 0⤊ 0⤋