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2011年4月10日星期日

Having a battery fully charged and the laptop plugged in is not harmful

The modern lithium battery can be charged regardless of its current percentage, given that it has absolutely no negative effect in its performance.Dell vostro 1510
Many laptop users have this question and we will answer it right now:
The answer is: YES and NO, it depends on the situation.
Having a battery fully charged and the laptop plugged in is not harmful, because as soon as the charge level reaches 100% the battery stops receiving charging energy and this energy is bypassed directly to the power supply system of the laptop.
However there's a disadvantage in keeping the Dell d630 batteries in its socket when the laptop is plugged in, but only if it's currently suffering from excessive heating caused by the laptop hardware.
So:
- In a normal usage, if the laptop doesn't get too hot (CPU and Hard Disk around 40ºC to 50ºC) the battery should remain in the laptop socket;
- In an intensive usage which leads to a large amount of heat produced (i.e. Games, temperatures above 60ºC) the battery should be removed from the socket in order to prevent unwanted heating.
The heat, among the fact that it has 100% of charge, is the great enemy of the Dell inspiron 1520 battery and not the plug, as many might think so.

Battery discharges

Full battery discharges (until laptop power shutdown, 0%) should be avoided, because this stresses the battery a lot and can even damage it. It's recommended to perform partial discharges to capacity levels of 20~30% and frequent charges, instead of performing a full discharging followed by a full charging.
Laptop batteries contain a capacity gauge that allows us to know the exact amount of energy stored. However, due to the charging/discharging cycles, this sensor tends to be inaccurate overtime.
Some laptops include in their BIOS, tools to recalibrate this battery gauge, which is nothing more than a full discharge followed by a full charge.
So to calibrate the gauge, it should be performed, in every 30 discharge cycles, a full discharge non-stop , followed by a also, non-stop, full charge.
An inaccurate gauge can lead to the fact that the the battery capacity values are are wrong. The battery may report that it still has 10% of capacity when in fact it has a much lower value, and this causes the computer to shutdown unexpectedly.
Discharge (or charge) cycles consist of using all that Dell inspiron 1720 battery charge (100%) but not necessarily all at once.

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For example, you can use the laptop for some minutes in a day, using half its capacity e then fully charge it. If you did the same thing in the next day, it would be counted a discharge cycle and not two, so it may take several days until a full discharge cycle is completed.
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2011年3月24日星期四

What you need to know about iPad 3

What you need to know about iPad 3 by www.wholesaleeshop.com.au

The UK iPad 2 release date is mere days away, but the rumour factory's already moved on: it's predicting iPad 3 specifications including chips, cameras and retina displays - with a little bit of help from mysterious, unnamed people who can't possibly be identified.
How very convenient. So what's the word on the street about the next iPad?
The iPad 3 release date is September 2011
This is the biggest rumour of all: an iPad 3 mere months after the iPad 2. An unnamed Apple employee says that the iPad 2 was a bit of a rush job, and "the third generation iPad is the one to make a song and dance about."
Respected Apple watcher John Gruber added fuel to that particular fire by strongly hinting that the iPad 3 release date will be in September.
Gruber, who was musing about the HP TouchPad's potential summer release said: "Summer feels like a long time away.
"If my theory is right, they're not only going to be months behind the iPad 2, but if they slip until late summer, they might bump up against the release of the iPad 3."
If Gruber is right about this and the iPad 3 features in an Apple autumn line-up, then it looks like Apple is going to start offering a new iPad every six months.
The iPad 3 UK release date is a mystery
With Apple apparently unable to meet demand for iPad 2, we'd expect a staggered release date for the iPad 3 too: if the US gets the iPad 3 in September, we'd expect the UK iPad 3 release date to be in October, or possibly even November. Apple won't want to miss the Christmas period, but the US comes first.
The iPad 3 specs include a dual-core processor
It's possible that the iPad 3 will have a brand spanking new processor, Apple's A6, but if the rumoured release date is correct then time is awfully tight: we'd certainly expect to see an A5, not an A6, in the iPhone 5 when it turns up this summer.
Apple may well surprise us, of course, but we'd expect to see the same processor and graphics as the iPad 2 in the iPad 3: an A5 processor with PowerVR SGX543MP2 graphics. This one comes down to the iPad 3 release date: if it's 2011, expect an A5. If it's 2012, expect a faster A6.
The iPad 3 features include a retina display
This was widely predicted for the iPad 2, but of course the current iPad doesn't have a double-resolution display: for now, that's something you'll only get in the iPhone 4. Could a Retina Display be one of the features Apple didn't quite get into the iPad 2? Could be! It's the very first thing on our iPad 3 wish list.
The iPad 3 hardware could include an NFC chip
Apple's very interested in Near Field Communications, and one particularly tasty rumour at Cult of Mac suggests that the iPhone 5 will use NFC to take over nearby Macs, enabling you to use your data and settings with a flick of the wrist. Since the iPad 3 will follow the iPhone 5, if NFC's in one it'll probably be in the other too.
The iPad 3 specifications will include more storage
The iPad 2 has the familiar 16/32/64GB storage options, but as flash storage comes down in price a 128GB option for the iPad 3 isn't impossible - although that might depend on the current horrible situation in Asia, where the tsunami has caused chaos in parts of the electronics industry.
The iPad 3 features could include a Thunderbolt port
Two generations of USB-free iPads suggest that Apple just isn't interested in adding one, but the new Thunderbolt port found in the 2011 MacBook Pro could be another story: it's a combined accessory/display connector with astonishingly fast performance.
The iPad 3 may live in the cloud
This has been talked about and leaked about for so long that, on the same principle that even a stopped clock is right twice a day, it's bound to come true eventually: a cloud-based MobileMe for storing your stuff on Apple's servers. A new iPad with iOS 5 and a new MobileMe would be lots of fun.
The iPad 3 specs might include an SD card slot
This was widely predicted for iPad 2 and, like the retina display, didn't materialise. One for version 3, perhaps? Using a separate adapter to read camera cards is rather inelegant and clunky.
The iPad 3 specification should include a better camera
The rear-facing camera on the iPad 2 isn't brilliant: an iPhone 4 camera and flash would do nicely.
The iPad 3 price might be higher than the iPad 2
The iPad 2 didn't herald a price hike, but if the iPad 3's coming in September we don't think a massive iPad 2 price cut is very likely - which suggests that if the iPad 3 does appear then, it might be more of an iPad Pro - with a price to match.
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2011年1月24日星期一

Battery Solution - Battery Plugged in not charging and not detected

I have a Dell Vostro 1510 laptop, and when i have the battery charger plugged in, the battery icon says "10% available (plugged in, not charging)", and if i pull out the cord, the laptop shuts down straight away. Can this be fixed, and if so, how? I bought this laptop new around 6 months ago. The detail info below:
plugged-in-not-charging
The Battery didn't charge or detect being plugged in also caused by four reasons:
  • 1. The Vostro 1510 laptop battery failed
  • 2. The Adapter failed (can not charge the battery)
  • 3. The motherboard charging electric circuit failed (many caused by short damage). You can view more info here: Dell Motherboard Problem
  • 4. The laptop bios is too old to recognize the battery
After I checked my battery and adapter and confirm they are good. Then I try to repair it by myself.. My Latitude d620 battery was fixed by myself.
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The first solution :I search in the google: Repairman from another site suggested that while the computer is on and plugged in, to unplug the adapter and then plug it back in again. To check the computer can started charging.
So I remove the laptop battery from the laptop and left the AC cord connected, booting it up on the power cord alone until I was able to boot into Windows 7, at which point I then put the laptop battery back into the computer while it was still on. This worked and while a tad unsafe for most people, I wouldn’t recommend you use this idea unless you absolutely had to, that is, if there was no other choice.http://www.wholesaleeshop.com.au/Laptop/
The Second Solution: You can download the newest BIOS from dell.com and then flash the bios. But I do not want to update Bios, So I use another way to make the Power manager system to recognize my latitude d630 battery.
I open up my laptop Device Manager (usually a right click on your Computer/My Computer) and remove all Dell inspiron 6400 battery related devices from the Device Manager. Then after you’ve done that, right click again and select “Scan for Changes”, which should reinstall the proper services and allow for your laptop to charge again.
If this also can not solve the problem, I suggest you send the laptop to Dell to repair the Laptopmotherboard.
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