Repair battery step one : calibrate your cell

November 17th, 2009 Tagged battery, laptop, repaire

Repair battery step one : calibrate your cell

First of all, the test voltage to zero, the machine can not start naturally, can not use power when charging (the battery light does not shine).

Disassemble the battery, more or less talk about the situation inside the battery.

Battery in a total of 9 can be placed 18 millimeters in diameter, length 65 mm core CGH18650 models the location of lithium batteries, Panasonic’s 22 batteries in parallel, three groups of series (OK, then my new Latitude D620 battery, the same, it appears that is 6), there is a very fine control with a single chip – the protection of the circuit, the circuit to the computer a total of five output contacts, respectively, are negative, the clock and data.

First of all, check the sticky in the battery temperature detection probe (temperature resistance), and temperature protection insurance, are also normal. Test-retest the battery voltage of each group, in which two sets of battery voltage of 3.8V, normal; a battery voltage of 0V, appear to have lapsed. The total battery voltage of 7.6V, then the failure of the battery pack has not yet open, then measuring the internal resistance was very small, almost in a state short-circuit.

First of all, failure to deal with Thinkpad T60 batteries, battery repair based on previous experience, the failure of the battery may not be completely damaged, can be activated through a number of methods, in particular the performance of state for the short-circuit the battery. The voltage of the battery to 0 with one end connected to the circuit board off line to avoid damage to circuit boards in operation. Open-circuit battery voltage after the re-survey, is still 0V, ruled out the possibility of short-circuit boards.

For short-circuit the battery failure, the method is more effective high-voltage electric current moment method, using the old IBM power supply (my back-up power), 16V maximum 3A output string on the multimeter (a tributary of the current file 20A), first negative power supply Even with the battery anode, and cathode power multimeter then red table pen, table pen with black multimeter battery cathode touch, speed, faster as far as possible, the former two degrees to see the multimeter has reached close to the 2A (moment) and the third on only 0.4 A about an immediate stop, measure the battery voltage has been restored to about 3V, the internal battery short-circuit that point has been an instant high-current boil (If you do not damage the battery to stop immediately, even if so, battery life and capacity have been the impact, if conditional, or recommend replacement, but if the replacement, then try to replace the entire battery pack are). However, the batteries need to be a separate charge (if the battery charge of the whole group, this will result in the other two groups had mesenchymal cells), plug in the charger to start charging ammeter to monitor during the charge current to 500mA or so, current for the 3.6AH battery pack is small, but the charger is the charge current is limited and a small current to the xps m1330 battery charge is good for the resumption. After about six hours, the charger showed the battery is already full, continue to re-charge for about two hours, remove the battery, measure voltage has reached 4.2V, with bright halogen bulb in the flashlight (3V, 500mA) to discharge its , bulb sharp discharge current of 700mA, the battery pack that has been basically restored, continue to discharge until the battery voltage down to 3.8V, the purpose of the two groups with the same battery voltage, charging time together so as not to overcharge the Back to the whole battery pack battery circuit welding.

Since the inspiron 6400 battery voltage while the circuit board there is no output, then, surely have damaged circuit boards, after observation, negative input circuit board (take battery) output (then output contact) is directly connected, and the positive input and output of by a high-power thyristor control, the thyristor remains cut-off state, that is, the control circuit has not been output control signals to the SCR control terminal, or simply the SCR has been destroyed. (Measured after the control signals that I did not) because I do not have the ability to repair single-chip microcomputer. IBM to take into account the protection of the BB more perfect, is about to run out of battery power will automatically shut down when, this battery is intended to be used for entertainment, therefore, need not be too concerned about, so I decided to shake the hp battery protection circuit, directly depend on BB’s protection circuit. SCR is in the input and output pin (that is, cathode circuit board input and output pin) between the solder on a small 2A fuse, fuse 2A select the reason is based on current usage, the largest in the computer power consumption , the current does not exceed 1.9A, 2A capacity sufficient unusual circumstances (for example, short-circuit accident) but also to ensure that the fuse of the time, but also play a role in protection.

In fact, directly to the SCR control terminal so that it can also be a high turn-on, but taking into account the current the battery must be a reason to burn, and the reasons for the identification of protective measures taken before or better in order to avoid greater loss.

Well, the battery power has been the first non-stick, and on the machine to try it! Normal boot, plug in the power immediately after the charge on the flashing lights are up, the way when charging the battery with a random look at battery information management software, was also displayed, the battery circuit board This shows that the single chip is still working.

Batteries battery is a Panasonic, the time the factory in June 2000, the first time in October 2000, the design capacity of 38.88Wh, the current capacity 38.88Wh, is charging cycle: 0 times.

Oh, do not know how to engage in, the inspiron 1300 battery may be burned when burning confused, even cycles to the zero, Now it maybe a new battery.

Repair battery step two : repair battery shell

Points and then encountered trouble: it was soon filling power (twice as fast than normal), in the course of discharge to 70% of the time will suddenly prompt “The battery is dead, please insert the AC power supply” warning capacity to show an immediate 5%. The beginning of a long time thought it was not using the battery leads to memory effect, we should do like a few of the deep cycle. But after several full charge, after release and found that the improvement is very small, only about 45 percent take power, with half an hour, we still have the problem. The largest may be the Inspiron 1520 battery pack in more than one section or “black sheep” in trouble, have to pull it out!

Red several times in the subsequent discharge cycle every place is full of electricity and have finished after the battery power to open, measuring the voltage of each battery pack to find a group of “different”: the per-charge when it voltage to reach 4.2V or even more than the first, leading to cessation of the entire VGP-BPS2 battery charge, and discharge when it was first to reach 3.6V or even less, is a typical decline in capacity. And the largest of which may still be a battery problem. This group of cells separated from the measurement of voltage, respectively, found that a battery voltage is low, only about 3.2V, a separate charge of their voltage quickly reach 4.2V, less than a minute of time, The A1185 battery basically has no capacity to speak with a light bulb when the discharge was found, it has the fundamental output current that can not provide even less than 1mA, measuring its resistance, has reached more than 2K seems to have been scrapped.
As a result of a “shock therapy” after the restoration of the normal cells, but not charging voltage reached 4.0V, it seems that it is “the pot boiled dumplings – do not put out an electric” soldering it back a battery discharge followed by the use of time of up to 90 minutes, has been near normal level of the battery.

However, when the charge is quickly filled, and disturbed mind up soon. Was a discharge, it is less than half an hour, open a test, just fix the bad and the battery.

Not always have to use a “heart to recover,” ah, so the value on the lost.

This section of the final decision to do a battery operation, and then they can not, then replaced the batteries. Peeling of the batteries, removed the insulation near the cathode cap and found a slight corrosion around, but I do not like battery leakage and traces, as well as save. With halogen lamp from the battery positive and negative, there is no response Taking into account the previous “Anatomy” the same symptoms when the batteries are inside the battery with the battery cathode output between cathode cap (the pressure on, not welded) oxide occurred, resulting in increased resistance and end-of-life battery , and the internal battery is still good. Oxide layer in the case is not serious as long as the battery cap to strengthen the internal contacts and battery resulting in the battery does not leak if damaged can be restored. The simplest way is to step up the battery forceps are negative (one pad insulation film), while measuring the inspiron E155 battery output voltage (or current), while vertical extrusion batteries, once the battery output voltage is increased, the current increase (the change is often the jumping in nature, relatively large changes) to stop immediately, the battery will be able to repair.
The top edge of the battery cathode cap next to the mouth ventilation valve with cutting pliers, then immediately measured and found that the battery has been restored, the output current increases immediately. In order to insurance purposes, the battery cap in the week between the edge of the chisel a few more in order to increase the contact area to ensure that the use of effects.

The battery to re-wrap, solder back to the XPS M1210 battery pack, charge, discharge. The use of time to reach more than 90 minutes.

Again measured with test software and found that the current capacity of smaller 38.88Wh from the original into a 32.07Wh, a decrease of nearly 20 percent, but this is the real discharge process, there is no jump of dropped. After several red discharge cycle, the capacity has increased by some. Use has been made to the current two months, everything will be all right.

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Make your laptop battery last longer in some daily habits

August 28th, 2009 Tagged battery, laptop

Make your laptop battery last longer in some daily habits

1. Use the lowest brightness settings on screen displays.

This will not work in bright areas like out doors, but sure works well indoors. Cell phones, lap-tops, and even watches have brightness controls that will help stretch the life of any laptop battery.

2. Fully charge and discharge all of your batteries.

Try to avoid “topping off” the battery if there’s enough of a charge in there to get by, then remove the battery or unplug from the charger only after it has had a chance to trickle charge at 100%, and your Sony NP-BG1, Canon BP-511, Kodak KLIC-5001 battery will last 2 or 3 years easily.

3. Use programs that take less RAM and keep useless programs closed.

A lot of laptops come with cluttered programs since the day you take them home from the store. Stuff like Yahoo messenger or Firefox with 20 tabs open takes a lot of RAM and eats up batteries super fast.

4. Keeping the volume level on all of your music playing devices is key to a longer Latitude D620 battery life.

You’ll be amazed at how much life loud music sucks out of your battery. This will also do wonders in preserving your ear-drums as well.

5. To go with #4, also turn down the volume on your cell-phone ringer.

Long ring-tones may sound cool, but hearing your favorite song play every time your phone rings will drain your Dell inspiron 6400 battery in a hurry.

6. Turn off your Bluetooth whenever you’re not using it.

This can be an easy one to forget about if you’re often switching between using a Bluetooth, and the phone’s ear piece. Most people use their Bluetooth way too much anyhow, so cutting back on it’s use will lengthen the life of your Dell Inspiron B130 battery.

7. I’ve always heard that when you get a new laptop, or anything with a rechargeable battery for that matter, you should charge it over night.

Pull that bad boy out of the box and give it a nice, long, healthy charge. Even if it says full, leave it in and charging for a while.

8. When I was little I would always find VGP-BPS2C VGP-BPS2 batteries in my grandmother’s fridge.

I always wondered why, turns out she was onto something. If you have extra batteries for your phone, laptop, or anything else, go ahead and store those in the refrigerator. Just make sure not to freeze 40Y7001 40Y7003.

9. Programs that are run from a CD or DVD can be copied to and run from the hard drive, which typically consumes less power than an optical drive.

If you have music and movies you know know you’ll be playing numerous times, just rip them onto your hard drive and you’ll be styled!

10. Lastly, just using basic common sense will help extend the life of all of your Dell KD476 Dell Inspiron e1505 Battery.

If you’re not using it, turn it off! If you don’t need it, get rid of it! This is probably the most practical and applicable way to get the most out of all of your batteries.

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Dell Laptop battery maintenance guide

June 18th, 2009 Tagged battery, dell, guide, laptop, maintenance

Dell Laptop battery maintenance guide

Battery is the consumables, with a limited life expectancy, most manufacturers warranty for the notebook battery time ranging from three months to a year, Dell is to follow industry standards to provide a limited warranty for one year. For batteries, use the correct and proper storage, can significantly extend the Dell E1705 battery life of notebook computers.

First, the battery useing must follow some attention points.

1. When you use laptop with external power, you dont need to take out the battery.

There is a chip to prevent over-charging in the mainboard. When the rechargeable battery power to 100% state of charge, the charge control chips (FET) will stop charging the battery. We do not have to worry about damage to the battery.
Connect the 851UY 75UYF 1K500 battery to avoid loss of BIOS information.
To prevent a sudden loss of power break.

2. To prevent exposure to prevent damp to prevent the erosion of liquid chemicals, batteries to avoid contact with metal objects, such as exposure to short-circuit occurrence.

3. Long-term do not use notebooks, how to store the laptop battery?

We will have a period of time not to use the notebook, the 851uy 75uyf 1k500 battery is fully charged to preserve, or to be released after save electricity?

Put long-term preservation of photoelectric batteries will lose their activity and even lead to the control circuit protection self-locking and can not re-use, full of power will bring about long-term preservation of the safety problems, the best method is to save electricity use to 40 or so and then stored in cool dry place, about 20 degrees Celsius is the ideal storage temperature. Of course, the best month to come up with to use a battery, the battery can ensure a good state of preservation, but also does not allow the loss of electricity damage to the battery completely.

How can I exam the Dell battery power? (For example in cell D610 battery)

Remove the battery, press the Macbook Pro battery power signs, we can see the situation of the five battery status lights. For two bright, representing 40% of the electricity. Electricity on behalf of the entire light is sufficient, if the 135-light, that damage the battery.

Second, how to extend as much as possible the work of laptop battery time?

To reduce the screen brightness. How to adjust the brightness of the use of laptop batteries, boot by F2, into the BIOS to adjust the Brightness of Video. Or fn + down / up key combination to adjust the brightness quickly.
Open the CPU speedstep feature, you can greatly extend the working hours of latitude x300 battery; Cpu’s speedstep feature is enabled by default BIOS of. When using batteries, cpu will automatically down-use, in order to achieve energy-saving purpose. If not enabled, please start by F2, into the BIOS found in Performance, for the Speedstep Enable setting Enabled. (An earlier version of BIOS is the Alt + P to the sixth page, modify intel speedstep)
make the best use of standby, sleep and other functions. When a longer period of time without a computer, allowing notebook standby or hibernation, both to save power and extend the life of the computer. (Tips: Please confirm the successful installation of graphics drivers, power management options can be set up.)
WINDOWS in the process of power management settings, we generally can be set to “portable / laptop” (Portable / Laptop).
At the same time suggest that you will use the powerbook G4 battery when the wait time to close the monitor is set to 5 minutes, so when we do not operate within a certain period of time the notebook, it will direct the state of black screen, so other than the screen saver to run more power.
when using the battery as much as possible the closure of wireless, Bluetooth and infrared ports. At the same time to remove without the use of peripherals and to avoid the opening of a large 3D program, games and so on, in order to reduce unnecessary battery consumption.

Of course, on the controversy over the use of batteries, there are divergent views have any objection if we can http://bbs.dell.com.cn forum to ask questions, let us discuss how to maintain the battery.

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Thinkpad 60 Series “frozen to death” (freeze) solution

June 16th, 2009 Tagged bios, death, freeze, ibm, laptop, thinkpad

Thinkpad 60 Series “frozen to death” (freeze) solution

Freezing to death is not clear as characteristics, mainly performance freeze, screen images can be seen, but can not operate as if time stopped, the Thinkpad T40 battery hard disk light does not flash, other lights lit normal, press the power button can only be forced to restart, restart without self-test. Take it to service station hardware, the operation shows all normal. This may not be Thinkpad X60 battery probelm, but Core 2 series processor problems. Thinkpad currently address these issues, and Intel have been carried out corresponding measures. Of course, this does not solve the fundamental problem of freezing to death, but has been greatly eased, and so will be to minimize the probability of occurrence.

Solve this problem in five steps:

Step one: Upgrade BIOS, Lenovo officials online have the latest BIOS version 2.19
Download link, http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-63024,
Of course, also mentioned the need to upgrade, and strongly recommended, which the BIOS upgrade in the history of Thinkpad X60S battery is also relatively rare. BIOS upgrade would not say, and in accordance with the step by step readme on the list, no less dangerous, but should pay attention to the battery and AC must be used to prevent power outages, upgrade other programs to close, remember to turn off antivirus software and firewall.

The second step, Intel dual-core patch upgrade, download links
http://support.microsoft.com/kb/896256/zh-cn, even after the patch upgrade some manual operation, see the details, http://publish.it168.com/2007/0425/20070425015807. shtml.

The third step is to upgrade Intel micro-code of your thinkpad T60 battery, download link
http://www.microsoft.com/downloa … 0 & displaylang = zh-cn, the most simple, you can click Run.

The fourth step, upgrading your Thinkpad T61 battery graphics card driver, download links
http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-62841

The fifth step, upgrade the Thinkpad battery power management process, the download link
http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-4GXPEG
http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-61583

That’s all.

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Laptop battery using mistakes

June 14th, 2009 Tagged battery, laptop, mistakes, using

Laptop battery using mistakes

Lives Longer In BIOS? – This is one of the few troubleshooting diagnostic tests you can do at home to find out if your A1057 A1057 battery life problem is due to a hardware flaw or to the way the laptop is being operated. Enter the BIOS setup immediately after turning on the notebook on with a fully charged battery, usually by hitting the DEL key, the F1 or F2 key immediately after you power on. Some laptops display a text message telling you what key you need to hit to enter the BIOS setup, on others the message is suppressed by a BIOS setting, but you can always go online and Google the right key combination if it’s not in your manual. Once you bring up any BIOS screen, measure the time it takes the laptop battery to run down. If it doesn’t outlast the battery life under regular usage by a good margin, the short battery life is probably due to a faulty battery or a hardware failure that causes the laptop to continually suck power when it shouldn’t.

AC Adapter Noisy? For starters, this is one of those problems that tends to bother more women than men, because men lose their high frequency hearing at a much earlier age than women. Battery chargers typically include a transformer and some power IC’s, at least a bridge rectifier. There’s a lot of potential for humming and whistling with transformers, but they can go on operating that way for years without failing. If the battery charger gets very hot, then it’s time to check the manufacturer specs for temperature and see if it needs replacement, and check the U4873 D5318 battery temperature as well. In all cases, the acoustic behavior of your AC power adapter and charger may naturally vary with the quality of the power from the utility, and the feed voltage if you are traveling. Anytime you can avoid running a computer on poorly regulated or intermittent utility power you should do so, but at least with a laptop you’re better off than with a desktop.

OS Battery Management Active? Older notebooks were equipped with hardware only battery management schemes that controlled both charging and battery operation. All new laptops ship with ACPI (Advanced Configuration Power Interface) which is a marriage between BIOS routines that monitor board level charging and device activity, and the operating system. The operating system power management comes equipped with a number of default profiles that instruct the laptop if and how to nurse the U4873 D5318 battery. There’s usually a power user profile that just runs full out with no consideration of battery life, a number of special purpose profiles, such as running a DVD movie for a sole task, and a miserly setting that cuts performance to a minimum and puts devices like the hard drive to sleep when not in frequent use.

You can micro-manage these profiles to suit your needs, and you can always go into the settings and override them or change the profile at any time. The most useful trick to remember for running on G5266 HD438 KD186 battery is how to brighten or dim the LCD screen using the the function screen. Screen brightness is a serious power drain (you’re essentially powering a small fluorescent lightbulb) and in most indoor usages, strategic choice of where you sit can add time to your battery life. When troubleshooting battery life issues, you may want to run a power management profile that doesn’t come up to your expectations for performance for a few battery cycles just to help diagnose the problem.

DC Voltage Good? Check the voltage at the output of your AC adapter with a DC voltmeter, right on the barrel connector that gets plugged into the laptop. The rule of thumb for acceptable readings on power adapter output is usually a 5% variation either way of the faceplate voltage, and in terms of charging a G5266 HD438 KD186 battery, a high reading is better than a low reading. If you’ve purchased a lightweight battery charger for travel, don’t assume that it’s putting out the correct voltage just because there’s a connector that fit your notebook. Check your owners manual or the label on the original battery charger that came with the notebook.

LED For Charging Blink? While there’s no universal standard, a blinking LED on the battery charge indicator is probably not good news. It often indicates a battery that has been over-discharged, the voltage is so low that it’s confusing the charging circuitry into thinking the battery has a dead cell and would just overheat if a charge is pushed into it. The newer the laptop, the smarter the charging logic, and it won’t want to try putting a charge into a battery that may damage either the battery or the notebook itself. In some cases, you’ll be able to recharge an over depleted inspiron B130 battery if you wait until the notebook is shut down, install the battery, and then plug in the the battery charger, but I’d keep a close eye (and occasional finger) on it for overheating. There are also fuel gauges built into some newer batteries that simply disable the battery when it reaches it’s planned cycle life.

Does Battery Get Hot? Recently there have been a spate of high profile stories in the media about laptop batteries catching fire. This wasn’t caused by normal heating due to charging. The problem was in the manufacturing process of the individual cells, where apparently some contamination led to internal short circuits that could cause the battery to overheat even if it wasn’t in use. Powerbook G4 batteries normally heat up a little on charging, and they heat up even more when discharging under heavy demand. Battery packs usually include a temperature cut-off circuit, that will halt battery charging or discharging if it really overheats. In some cases, the battery will not be usable afterwards because the cut-off acts like a circuit breaker that can’t be easily reset.

It certainly doesn’t do your laptop battery any good to get very hot, even if it’s within the toleration of the protective circuitry, so if it’s overheating on discharge, consider running on AC power instead. Just remember you have to shut down before removing the Acer 3000 battery unless it’s specified as being hot-swapable:-) You can also try decreasing the performance settings to lower the power drain. If the battery is overheating on charging, you can try charging when the laptop is turned off since the laptop is generating heat as well. Also, pay attention to the ambient air temperature. All notebook computers depend on the ambient air for cooling, so unless you are running the computer on a special cooling pad, think twice about using it on those 110 degree days!

Latch Locks Tight? It’s impossible to see what’s going on with the connector contact inside the battery compartment once the battery is installed, so the only indicator you have to proper installation (aside from normal operation) is the condition of the latch. If the latching mechanism doesn’t show a positive close by clicking back to the relaxed position, try reinstalling the battery. Some laptops have a manual battery lock that is operating separately from the latches, and which will not lock unless the battery is installed properly. If the latches refuse to click closed on their own, remove the battery again, visually inspect for any bulging or distortions in the package, and check the connector for damage.