Posts Tagged ‘charge’

Apple iPhone Solar charging case view

August 31st, 2010

solar-iphone

For those of you who waited patiently for the day, you will be glad to know that San Leandro, California is finally Novothink the orders for the ascent, the solar energy case for the iPhone and iPod Touch are coming.

He announced six months ago, the climb is a case in Benin, ie staring with integrated solar-battery system, which could spend much less time to drop your iPhone and you take care of your battery life. With a two-hour session in full sun, you give your iPhone 3G in the third minute of talk time.

overloaded The battery for the iPod Touch is 3.7 V 1500 mAh lithium-ion polymer Apple laptop battery, while the model of the iPhone comes in a little less than 3.7 V. 1320 mAh Anyway, it’s like a spare battery in the back the phone or iPod built.

The Solar Charger for iPod Touch overload can be charged via the sun or more “traditionial” sources.
Once charged, under the sun or USB Solar Battery Lithium-ion polymer overload can effectively double the life of your iPhone or iPod Touch. The power of the extra battery adds a new dimension of freedom for iPhone users. As anyone who has to run applications Rusty knows by heart loves, the life of the battery of the iPhone evaporate before their eyes.

His first as the solar charger will be charged certified by Apple, the overhead for the iPhone 3G and 3G will be a fee of $ 79.95. Against overvoltages on the iPod Touch normally sells for 69.95, but after a quick check found Novothink sell at the discounted price of $ 52.95.

To determine if the climb up to his reputation as a game-changer for the review, the increase in the coming weeks greenUPGRADER stay tuned.

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Do we need to fully discharge the batteries before recharging

April 15th, 2010

charge

To exhaust the battery completely before recharging laptop is not necessary today with lithium-ion laptop battery. The myth that notebook PC batteries should be fully discharged before recharging comes from the “memory effect” phenomenon that swept the old nickel-cadmium (NiCad) batteries of a laptop.

To circumvent the effect of memory and premature death of NiCd batteries, owners of old handsets had to fully discharge their Dell Inspiron 6400 Battery before recharging.

Laptops contain components that we now have advanced computer and no longer work with NiCad batteries. In contrast, today’s laptops run on the latest development in portable Dell Inspiron 6000 Battery technology – lithium ion. Lithium batteries do not suffer the memory effect like NiCad batteries do because they have no memory. You can recharge them, but still has some juice, without fear of reducing the energy capacity of the battery, run times and duration of life.

In fact, it is advisable to recharge lithium-ion Inspiron 630m Battery , while still have some power. However, you must comply fully with them from time to time to re-calibrate the indicator of battery life on the screen of your laptop. This indicator tells you how much longer the hardware of the laptop can last without being connected to an electrical outlet.

Unless you are still using an old laptop using NiCd batteries, you do not miss or shorten your Dell Inspiron 640m Battery life if you do not fully comply with its laptop batteries before recharging. Feel free to connect the laptop to an outlet with the battery in place while using it. Laptop batteries can recharge while ensuring that the hardware of the laptop will not die with you when an outage occurs.

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The charging of lithium-ion batteries B

March 25th, 2010

Some chargers promise a fast charging lithium-ion Dell laptop batteries in one hour or less. Such chargers skip Step 2 and go straight to “Ready / Ready” at the end of stage 1 At this point, however, the charge level only at about 75%. The achievement of the full charge requires I.á. times longer than level 1

There is no floating charge created as stand lithium-ion Dell RN873 do not overcharge. In their place, a short Endladephase is added, which compensates for the small self-discharge of the battery and the power requirements of the protection circuit. This Endladephase may need to be repeated every 20 days, depending on the battery. In general, the charging process is active when the open terminal voltage drops to 4.05V/Zelle, and turns off when the terminal voltage has reached 4.20V/Zelle battery4.us/ .

But what happens when a battery is inadvertently overcharged? Lithium Ion Dell hd438 , Dell KD186 is built to operate safely within their normal voltage range, but it becomes unstable if it is charged to higher voltages. When is charged via 4.30V/Zelle, formed on the anode, a metallic lithium layer, the cathode material begins to oxidize, losing the stability and development of oxygen. Overloading leads to overheating of the cell. If this is ignored, can lead to inflammation.
It will be made great efforts to avoid overloading and deep discharging too.

Commercial lithium-ion batteries contain a protection circuit which limits the charging voltage on 4.30V/Zelle, 0.1V/Zelle higher than the threshold voltage of the charger. A temperature sensor shuts off the process when the cell temperature reached 90 ° C, and a mechanical pressure switch interrupts is definitely in the charge circuit when the safety threshold is reached for the pressure. Except to the spinel batteries () magnesium-based, which contain one or two small cells.

Extremely low voltages must also be monitored. The protective circuit is so constructed that it also interrupts the circuit when the battery is inadvertently discharged below 2.50V/Zelle. At this voltage the protection circuit will disable the laptop battery and recharge with the help of an ordinary charger is no longer possible.

There are various measures to prevent deep discharge. The device protects the battery by interrupting the discharge has reached a voltage of 2.7 to 3.0V/Zelle. Battery manufacturers ship the Dell Inspiron 6000 Battery with a capacity of 40% to allow for self-discharge during storage. Technically better batteries contain a “Weckschaltung”, where the protective circuit only allows a flow of current after the battery has been reactivated with the help of a short charge. This allows for longer storage.

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The charging of lithium-ion batteries A

March 24th, 2010

There is only one kind of charge, lithium-based laptop battery. Can extend the so-called ‘miracle-loading devices’, which, as is said to produce batteries and their life expectancy, does not exist for the lithium chemistry. No one can administer one Superschnellladung. The manufacturers of lithium-ion cells have very strict guidelines for the loading procedure and the batteries need to be treated with the appropriate regulations.

Lithium-ion are easy to maintain and use any preparations, as in the nickel-based Dell latitude D600 battery, the case is. The first charge is the same as the fifth and the fiftieth. The instructions require a new battery for 8 more hours to take off and land, may lead to nickel-based batteries back.

Most cells are charged to 4.20 volts, with a tolerance of + / -0.05 V / cell. A charge of only 4.10 Volt reduced the capacity by 10%, but results in a greater life expectancy. Newer Dell Latitude D510 Battery cells are now in a position to achieve, even with a charge to 4.20 volts per cell for a good number of charge cycles. In Figure 1 are voltage and current waveform shown a lithium-ion cell during a charging process.

Figure 1: Charging a lithium-ion battery .. Increasing the charge current in a charger for lithium-ion Dell Latitude D520 Battery, can not significantly shorten the charging time. Although the peak voltage is fast enough with a higher current, the full charge takes more time.

The charging time of most chargers is about 3 hours. Smaller Dell Latitude D610 Battery, as used for mobile phones, can be charged with 1C, the larger cells 18650 I need for laptop computers, should be consistent with 0.8c or less loaded. The efficiency of the charge is 99.9% and the battery remains cool during charging. The full charge is reached when the voltage threshold is reached and the current has fallen to 3% of set value, or approximate.

A maximize the charge current reduces the loading time but barely. Although the peak voltage is reached faster with a higher charge current, reaching the full charge lasts longer.

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Simple Guidelines about using battery when charging and storing

February 25th, 2010

Simple Guidelines about using battery when charging and storing

Avoid frequent full discharges because this leads to additional power consumption of the backup battery. Frequent partial discharges with many charges are better for lithium-ion laptop battery than one total discharge. Charging a partially discharged lithium-ion battery, the battery does not hurt, since no memory effect occurs. (In this respect, lithium-ion differs) of nickel-based batteries. The short battery life in a laptop is justified by the heat rather than through many charge / discharge cycles ..

Although free from memory, it should at lithium-ion batteries are only aware after 30 cycles, a full discharge is to calibrate the Toshiba pa3384u 1brs Toshiba pa3107u 1brs battery with the fuel gauge too. The discharge of the battery with the device serves this purpose. If this is ignored, the fuel gauge is crucial unreliable. The battery life will not be affected.

Lithium-ion Apple a1057 A1012 batteries should be kept cool. Hot cars are to be avoided. For longer storage, the battery should have a charge of about 40%.

Consider removing the iBook G4 14 Battery battery from a laptop when it is fed from the mains. (Some laptop manufacturers are concerned about dust and moisture accumulating inside the battery compartment).

Abstain from the purchase of a replacement MacBook Pro 15 Battery battery for later use. Note the date of manufacture. Do not buy old batteries, even if they are offered at reasonable prices.

Battery4.us Hopes that help you.

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The life of lithium batteries may be extended: store and charge

February 24th, 2010

The life of lithium batteries may be extended: store and charge

If possible, the Dell latitude d600 battery should be stored in a cool place with 40% charged. A certain energy reserve is needed to keep the operations of the battery and its protection circuit, during prolonged storage. The worst combination is full charge and high temperature. This happens when the phone or spare battery in a hot car to stay. Using a laptop with a mains supply is similar to temperature problems. If a battery is fully charged, the internal temperature rises during use at about 45 ° C.

Removing the battery from the laptop when it is fed by the network, protects the Dell d5318 battery from overheating, but different laptop and battery manufacturers warn. They say that dust and moisture can damage the laptop. The seller will be lucky if he can sell them a replacement battery, maybe a little earlier than really necessary.

But the question is often asked whether the laptop should be unplugged when not in use. With lithium-ion, this is not an issue. Once the latitude d620 battery is fully charged, no additional charge current flows more. It is however recommended to switch off the laptop overnight, because of heat damage to the battery.

A large number of lithium-ion batteries is finally disposed of during the warranty period. Some of the defective batteries are sent to a service center or the manufacturer, where they are regenerated. Studies show that 80-90% of the returned latitude d610 battery can be repaired and reinstated.

Some lithium-ion batteries fail due to deep discharge. If the discharge to a lower cell voltage of 2.5 V / cell, leads, opens the internal protection circuit and the battery seems to be dead. A charge with the original charger is impossible. Some battery analyzers (Cadex) have the ability to reactivate a Boost (wake-up) function, the protection circuit such a ‘defective’ aspire 3000 battery, and thus allow the loading process again.

However, if the cell voltage below 1.5 volts per cell has fallen, and remains for several days in this condition should be waived on a recharge for security reasons. To prevent such margins, a battery should never be stored fully discharged. Charge the battery before storing something and then load it fully before the recent use.

All the PC (personal computer) and some other electronic devices that contain a backup battery for internal memory. This battery is usually a small, non-rechargeable lithium battery, which delivers a small current when the device is switched off. The PC uses the battery to be able to store certain information, even if the device is switched off. These are the entries in the BIOS, the current date and time, and allocating resources of the Plug and Play system. The memory function is to shorten life expectancy by a backup battery for a few years.

Some people say one to two years. If the PC connected to the network, even though he is off, should the backup battery on the PC mother board for 5 to 7 years his gut. A PC should display a timely reminder, if this backup Apple a1008 Sony vgp bps5 battery is weak. A non-operational back-up battery leads to the loss of the volatile memory, and some settings may be lost. According to replace the backup battery, the PC should again be operational.

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How to charge your laptop battery properly?

January 9th, 2010

How to charge your laptop battery properly?

solarroll-laptop-solar-charger

During the the process of notebook using, we need no to deliberately charge the laptop battery to 100% state or fully discharged laptop battery to automatic shutdown protecting. The correct way is that charge the battery in 20% state and stop charging in 98% . If the machine has the power calibration procedure, when the battery standard-by time significantly reduced. Then calibrate the battery in time to active the protection circuit performance.

For early notebook batteries as Dell XPS M1730 Battery (Ni-MH Ni-MH or Ni-Cd Ni-Cd), really need to fully charge and discharge in order to maintain good battery capacity. But for the lithium battery is not necessary even it may damage the battery.

In fact the lithium batteries has a little memory effect. The lithium VGP-BPS9/S battery materials is very sensitive to the conditions as temperature, the use of frequency and so on. The battery will be aging after used for some period time (standby time reduced). The natural wear and tear is an important reason, and inadequate maintenance is another important reason.

A well-designed lithium batteries have a very good protection circuit to prevent excessive charge and discharge.As over-charging and discharging of the Sony VGP-BPS8 battery will be the rapid reduction activity. Under the protection of protection circuit, the user fully charge and discharge the battery several times, in fact, impossible to achieve had “full” level.

Sometimes WINDOWS show that ThinkPad R40 Battery capacity is 20% or more, you can use 30 minutes. But after used 10 minutes or less the machine suddenly automatically shut down. The reason is that the battery has been aging, the battery protection circuit can not monitors the battery real capacity. In the normal battery depletion, the protection circuit original parameters have been unable to properly reflect the actual situation of the battery

So power calibration procedure is to correct the benchmark protection circuit parameters to accurately reflect the actual capacity of the IBM ThinkPad R50 Battery. This correction process will often take two or three complete charge and discharge. As previously mentioned, fully charge and discharge will reduce the battery activity. It is not frequently used, usually once a month.

The article Via laptop battery blog

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laptop battery can not charge and dischage

December 18th, 2009

laptop battery can not charge and dischage

Generally, we said our laptop battery dead means that : the battery can not charge or discharge. The laptop battery can not work after used for some months most caused by the problem. Also sometimes the battery suddenly can not be recognized by machine. This is the adapter or mohterboard problem (espacially in dell laptop battery).

To second problem we only can change the adapter or motherboard. So http://www.battery4.us will talk some useful tips about the reason and solution to the “battery can not charge and discharge” for you.

The laptop battery can not discharge

Laptop battery can not discharge Reason:

  1. The laptop battery after the storage using and the life decay;
  2. Lacking charge or not be charged;
  3. Ambient temperature is too low;
  4. Discharge efficient less, such as the large current discharge cause voltage sharp drop to 0, then electricity can not be released
  5. The Toshiba PA3399U-2BRS battery has been in over-discharge protection.

Laptop battery can not discharge Solution:

  1. The Dell Inspiron 1525 Battery during storage should take a monthly charge and discharge;
  2. Charge the battery at 10% state;
  3. Use in a normal environment;
  4. Use proper adapter of the machine.
  5. Place it in icebox for about 12 hours and cool place 3-5 days to unlock the protection

The laptop battery can not charge

Laptop battery can not charge Reason:

  1. The Inspiron E1505 Battery in zero voltage;
  2. charger failure, no output current;
  3. External factors have led to the charging efficiency is too low (such as low or high temperature).

Laptop battery can not charge Solution:

  1. Check charger output voltage and current;
  2. Check the laptop battery charger output contacts is good or not
  3. Charge the battery with 1.5 times the maximum voltage of the battery, 1.5C high current charging, active the Sony VGP-BPS8 battery . (Only when the battery can not charge, use this method)

In the end, http://www.battery4.us wish you have a good Christmas Day.

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