When talking with my iPhone using friends, we often seem to pop up on how to extract iPhone “Irreplaceable” and maximum autonomy.
I have some suggestions, but I decided to do some research to see if there is a more complete set list, check to increase the time between charges.
Source of this list is Apple’s own iPhone Support Web site. Some of them seem to be primary, but other people I never thought we could save electricity.
• First, if you’re not using it, turn off location services. This can help you find maps and other procedures themselves.
• Turn off or reduce the push notifications and e-mail. If you have regular contact with, you will pay the price of battery life. If you can put in place to check mail every 15 minutes or 30 minutes, you’ll help the cause.
• reducing third-party applications are not the black screen. If you often play games, then you probably are not worried about battery life too.
• Turn off Wi – Fi, if you do not use it. But if you win you surf network via Wi – Fi, rather than the power network in the cell.
• If you are not using headphones or other Bluetooth accessories, to keep Bluetooth turned off.
• If you have cellular coverage (no service), use of airplane mode. Your cell phone constantly looking Web is a huge battery drain.
• Setting half or more of the brightness of your screen. You hardly feel the difference and you really extend the life of the VGP-BPS2C battery.
• Turn off EQ set your music. I do not know the song EQ settings, you consume more battery.
• Turn off the 3G network. If you only used the phone and e-mail, you will find by turning off 3G and use the slower EDGE network, iPhone gain enormous power.Â
• Finally, your auto-lock in place for one minute. This will close one minute after the cessation of your screen. You can still receive calls and text, but your screen will be closed and all that power to protect the greatest.
In addition, Apple said it must fully discharge and charge the battery of your iPhone at least once a month, the BTP-43D1 battery will still retain 80 percent of its capacity after 400 charge cycles.
Until then, Apple will replace the U.S. $ 85.95 at any Apple retail stores within three working days of the iPhone battery.
A nickel-metal hydride batteries and nickel-cadmium
Nickel-metal hydride and the battery voltage nickel-cadmium 1.2V. However, the volume ratio of nickel hydride power metal nickel-cadmium batteries high. According to the battery making process of different factors, nickel-cadmium batteries have a strong impact memory, the memory effect of a small nickel-metal hydride. The same time, nickel-cadmium batteries contain heavy metals cadmium, is now prohibited. However, due to a large nickel-cadmium battery rate discharge excellence, and in many power tools, Ni-MH battery can not replace the nickel cadmium batteries. Therefore, temporary license ROSH standard nickel-cadmium batteries are used in power tools.
Development of lithium-ion battery is first, lithium batteries, the development of lithium-ion battery. Top of lithium batteries is to use pure film lithium anode.Sur this basis, the development of a lithium-ion battery. Anode of lithium-ion battery is graphite. Ion conduction is the lithium-ion battery instead of lithium metal. Security has greatly increased.
Voltage lithium-ion battery 3.7V. Volume ratio of higher energy than nickel-metal hydride. When lithium-ion batteries are aluminum, steel, and flexible packaging. Different areas of their respective market share. Some markets are common, such as lithium mobile phones.
However, due to once before batteries and nickel-hydride IBM ThinkPad T43 battery voltage metal of 1.2 ~ 1.5V, 2 Serial for 2.4V ~ 3.0V. Most electrical devices are already provided with standard working voltage. Such as the Walkman, radios, etc.. Thus, the latter in the civil battery, lithium can not replace nickel-hydride batteries in metal. However, in the latter part of developing a new use for electrical appliances, such as MP3, MP4 and so on using lithium as a mobile power source.
Therefore, nickel metal hydride, nickel cadmium, lithium-ion batteries in their respective fields present can not be replaced by other cells.
Nickel-metal hydride batteries and nickel battery voltage is 1.2V cadmium. But on the same volume, the capacity of the former to be even more dramatic environmental former without cadmium; battery self-discharge of the former principal, the latter has a strong memory.
Voltage lithium-ion battery 3.7 V, with the same volume under the two latter types of large capacity, no memory effect, high prices, storage forward.
Hard to say which is better phone, DV, part of the DC, laptops and other requirements of high capacity, small size of the occasion, general use lithium-ion Dell Latitude D800 battery; common small electrical appliances, DC machines with more than nickel-metal hydride batteries, after all, cheap and easy to buy. Both have been widely applied.
Two nickel-hydride batteries, metal and other rechargeable battery comparison
Rechargeable batteries are mainly two kinds of lead acid batteries and alkaline. The currently used nickel-cadmium (NiCd), to nickel metal hydride (NiMH) and lithium-ion (Li-ion) batteries are alkaline.
Ni-MH battery NiMH battery positive plate NiOOH material, hydrogen absorption alloy anode plate material. The electrolyte is a solution of KOH in 30% overall, and add a small amount of INST. Membrane using non-porous or non-woven nylon woven fabrics, etc. Vinylon. NiMH batteries are two types of cylindrical and square.
NiMH hp Pavilion dv8000 battery has a characteristic of many low-temperature discharge, even at -20 ℃ ambient temperature, using a current high (1C rate) of discharge, discharge of electricity that can reach over 85% of rated capacity . However, the NiMH batteries to high temperature (40 ℃ above), the storage capacity of electricity will be down 5 to 10%. Such as self-discharge (the colder, more self-discharge rate) arising from the capacity loss is reversible, and charged with multiple-discharge cycles will be able to return to their maximum capacity. NiMH circuit voltage of 1.2 V, or even with NiCd batteries.
NiCd / NiMH charging process of battery is very similar, and both require a constant current load. The difference between the two, especially in the methods of charge termination early detection, to avoid overcharging. Constant current charging the battery charger, while testing the battery voltage and other parameters. When the battery voltage to rise slowly, reaching a peak on the NiMH battery fast charge termination, while the NiCd battery is the first time when the battery voltage has dropped by one – â–³ V ending fast charging. To avoid damaging the sony VGP-BPS5A battery, the battery temperature is too low when you can not start fast charging, the battery temperature Tmin below 10 ℃, will be transferred to the net charge mode. The temperature of the battery, once the required values, you must immediately stop charging.
Chemical Reactions Nickel-cadmium batteries NiCd battery cathode active material of the board of powdered nickel oxide and the composition of graphite powder, graphite not participate, whose primary role is to improve the conductivity. Active material of negative electrode of the Board of powdered cadmium oxide and the composition of powdered iron oxide, the role of oxide powder iron oxide powder of cadmium have a proliferation higher, prevent clotting and increase the capacity of the plate. The active ingredients were wrapped in perforated steel, compression molding has been transformed into positive and negative plate battery. Between plates of hard rubber insulation with adhesive or alkali-hole PVC corrugated plates separated. The electrolyte is usually a solution of potassium hydroxide. In comparison with other batteries, NiCd batteries self-discharge rate (ie, the battery loses charge when not in utilization) moderate. NiCd batteries used in the process, if not completely unload on another charge, discharge the next time you can not provide all the power. For example, the release of 80% of electricity, and then fully charged apple A1008 battery will emit 80% of electricity. It is the sense that we call memory. Of course, a few full discharge cycles the battery NiCd will resume normal work. Since NiCd memory effect, if you are not completely discharge should charge the battery before discharge to 1V per session below.
Black is usually the first wife of lithium battery, there are six main kernel and nine points, six of the battery cell can be used generally for two hours at two-thirty, while nine cell battery can generally be used for more than three hours (with the battery and use your new and old).
1. What are the self-discharge rechargeable batteries for different types of battery-discharge rate?
Self-discharge is also called retention capacity load, it refers to the state open-circuit the battery storage of electricity in certain environmental conditions to maintain capacity. In general, self-discharge mainly influenced by manufacturing processes, materials, storage conditions, the impact of self-discharge is a measure of Laptop battery performance, one of the main parameters. In general, self storage temperature low-battery discharge rate is lower, but it should be noted that temperatures are too low or too high may cause harm to the battery can be used, BYD conventional batteries required range Storage temperature -20 ~ 45. The battery is fully charged, open circuit on hold for some time, a certain degree of self-discharge is normal. IEC standards require that Ni-Cd and Ni-MH battery is fully charged after the temperature is 20 degrees 65% humidity conditions, the Open cancel 28 days, 0.2C discharge time were more than 3 hours and 3 hours and 15 minutes must be compliance.
Compared to other rechargeable battery systems containing liquid electrolyte solar cell car, the discharge rate is significantly lower at 25 under about 10% per month.
2. What is the measurement of battery internal resistance to what?
The battery internal resistance is the Dell Inspiron 1150 battery to work, the current flows through the battery received by the internal resistance, is generally divided into AC resistance and DC resistance. As the rechargeable battery internal resistance is very small, measuring the DC resistance when the capacity of the electrode due to polarization, causing a bias resistor, we are unable to detect their real value, while the measured AC resistance can avoid the impact of polarization resistance obtained within the true value.
Test methods of AC resistance are: the use of the battery is equivalent to active resistance, the characteristics of a battery filter 1000Hz, 50mA constant current, its voltage is rectified and a series of processing samples for accurately measure the resistance.
3. What is the battery internal pressure of the battery at normal pressure is usually much more?
The battery internal pressure is due to load and unload the gas generated in the process of formation pressure. Mainly affected by the battery manufacturing processes, structural factors such as the use of the process. General internal battery pressure was maintained at normal levels in excess or too much of discharge, the hp PB995A battery may increase the internal pressure, if the cumulative response rates below the rate of decomposition reaction to produce gas too late to be consummated, it will cause the battery to the internal pressure is increased.
4. What is the internal pressure test?
Li-battery test ion pressure is (UL standard) simulated altitude of 15240m batteries in pressure at high altitude (low 11.6kPa), the test battery is leaking or send inflation.
Concrete steps: 1C recharge the battery constant voltage constant current charge to 4.2V, the threshold current of 10mA, then placed in 11.6Kpa atmospheric pressure, temperature (20 + _3) low-pressure tank to store six hours The battery will not explode, fire, cracks, leaks.
5. Temperature impact on the performance of the battery?
Of all the environmental factors of temperature on the sony VGP-BPS2A battery charge and discharge performance of the most influential in the electrode / electrolyte interface the electrochemical reaction and the temperature of the environment, the electrode / electrolyte interface is considered as the heart of the battery. If the temperature decreases, the response rate of the electrode also decreased, assuming the battery voltage is kept constant, the discharge current is reduced, the battery power goes down. If the temperature rise on the contrary, that the power output of the battery will increase the temperature also affects the transmission rate of temperature increase of electrolyte is acceleration, temperature drop transmission, send slow down the battery charge and discharge performance will be affected. However, the temperature is too high, over 45 years, will destroy the chemical balance in the battery, causing side effects.
6. Overcharge way to control what?
To prevent overloading the battery needs to control end of charging when the battery is full, there will be specific information can be used to determine if the destination charge. Generally have the following six ways to avoid overcharging is:
1. Peak tension control: by detecting the peak voltage of the battery to determine the end of the load;
2. dT/dt control: maximum temperature of the battery by detecting the rate of change to determine the end of the load;
3. T control: the apple A1012 battery is fully charged when the difference between the temperature and the temperature reaches a maximum;
4.-V control: When the battery is fully charged to a peak voltage, the voltage will drop a certain value.
5. Timing control: by setting a certain amount of time to load control end of loading, the general set-up charge in the% 130 of the rated capacity of the time needed to control;
6. TCO Control: Consider the safety and characteristics of the battery should avoid high (the temperature of the high temperature, except battery) charge, so when the battery temperature of 60 degrees should stop charging.
7. What is the charge-off impact on the performance of the battery?
Overloading refers to the BTP-43D1 battery is fully charged, the charging process after a certain time, then continue charging behavior.
As the design capacity of the anode exceeds the capacity of the cathode, therefore, the gases produced by the cathode and anode, separator paper produced by the cadmium compound. Therefore, under normal circumstances, the internal pressure of the battery will not be significantly increased, but if the current load is too large, or the loading time is too long, too late to produce oxygen is consumed, it may result in pressure increases, the deformation of the battery, leakage and other undesirable phenomena. At the same time, its electrical properties will be significantly reduced.
8. What is the discharge of the impact on battery performance?
End of internal discharge of the toshiba PA3191U-2BRS battery storage of electricity, the voltage reaches a certain value, continue to discharge will result in an excessive discharge, often based on the discharge current to determine the discharge cut-off tension. 0.2C-2C discharge 1.0V General Settings / branch 3C above, such as 5C or 10C discharge is fixed at 0.8 V / sticks, pool could have been made batteries have disastrous consequences, particularly discharge high current, or has repeatedly made a greater impact on the battery. In general, the battery-discharge pressure is increased, positive and negative active material reversibly damaged, even if the charge can be partially restored the capacity significantly attenuated.
9. A battery of different capacity combined with the use of which will cause problems?
If the old and new batteries of different capacity, or with the use of the barn, there may be leaks, zero voltage and so on. Because the charging process, gaps in capacity has led to some of the battery is charging a surcharge, some of the battery is fully charged, the discharge capacity when the battery is discharged no power to high-end, while the discharge capacity was too low. This vicious cycle, cell damage and leakage or low (zero) voltage.Â
10. What is the explosion of the battery How to prevent battery explosion? Battery inside the moment any part of the solid material discharged by the batteries were pushed up more than 25cm distance, called the explosion. Determine if the battery explosion, using the following experimental conditions: The network covers an experimental battery, the battery life in the middle, away from the net on each side of the hood 25cm. Net density of 6-7 roots / cm, network cable with a diameter of 0.25 mm aluminum flexible, if the experiment without solid part through.
According to Science Daily, U. S. reported that in the near future, people will see a 20-centimeter-long mini-helicopters to search for victims in collapsed buildings or monitoring of contaminated areas. The helicopter can fly in micro air depends primarily on its light fuel
Laptop battery weight, this new type of fuel battery is only 30 grams, but it can come out 12 watts of power.Â
There is a proverb says: “Many hands make light” This sentence reflects the design of fuel batteries. To achieve high efficiency, the traditional fuel battery, add the series, the manufacturer is usually fuel battery to form a structure consisting of several metal plates, each plate has a channel of contact with air and hydrogen. Thus, the weight of the fuel Dell Inspiron 1501 battery would be considerable. Currently, the Technical University of Berlin, Germany, Fraunhofer Institute for Reliability and Micro Research Institute integration (IZM) have jointly developed by the researchers of this weighs only 30 grams can output 12 watts of energy fuel batteries .
Researchers have developed the light-stack fuel weight can be used for future research missions, such as: location search for victims in collapsed buildings, monitoring traffic congestion, the analysis of investigation is contaminated areas such as chemical accidents. Robert is responsible for the study of Haenboshi IZM said, “how to reduce the weight of the fuel hp 417066-001 battery? We use a very thin battery fuel plate, with a score of lightweight plastic has replaced the metal plate.”
Researchers no longer need an extra pump to ensure adequate air supply at present, fuel batteries new, wind micro-bladed helicopter rotor to obtain direct stomata. At the same time, scientists have also addressed the problem of hydrogen supply, usually the weight of tradition manufacturing hydrogen tank was too heavy, very uncomfortable for micro helicopters. Hahn said: “We have built a solid sodium borohydride with a small reactor, if the water injected into them, you can generate hydrogen.” As the helicopters flying in the air condition is always same amount of energy needed, this small-scale reactors can supply continuous quantities of hydrogen. At present, researchers have built a prototype fuel toshiba PA3191U-4BRS battery light.Â
The 20-centimeter-long mini-helicopters are required to produce in one year to scientists, they will adjust the production of hydrogen in the next step to meet the energy needs change. Light-battery applications fuel weight are very optimistic about the prospects for the future, it can be used as laptops and battery phone batteries.
The process of using laptops, some factors that make the battery wear, and may even lead to maximum utilization of time the standard battery, but this does not mean that the battery of intrinsic quality and performance.
Laptop battery capacity, especially the size of the battery mAh marked to identify its Chinese name is mAh. MA hours, the size of the laptop directly related to the use of time, but it can not be generalized. Battery life time has a nice relationship with laptop configurations.
Affect the life of the battery-specific factors are:
 Factor 1: CPU speed – the right to install the driver for the Intel chipset will enable the system to use Intel’s SpeedStep technology, adjusting the processor speed to prolong the life of the system under the battery.
 Factor 2: CD, DVD, CD-RW drive and the frequency of reading – the CD-ROM copy of the file on your hard drive, watch videos, dials and other operations will affect the battery life.
 Factor 3: The total number of memory and memory – if the system opens up many applications take a lot of hard disk space for file swapping (virtual memory), resulting in frequent hard disk read and writes, if more memory will increase the dell battery use of more timely.
 Factor 4: Some applications to run automatically in the background, it will increase the CPU load, resulting in reduced use of time – usually recommended for the use of certain substantive programs that stream, only to run applications necessary.
 Factor 5: LCD brightness – more light settings to use a battery as long as possible, you can use the function keys on the keyboard to adjust brightness.
 Factor 6: Power Management settings and not speed – within the parameters of power management of different feeding regime will impact on battery life.
 Factor Seven: battery life – the average life expectancy of the battery is one year, with the use of time and frequency increases, the gradual reduction of use battery is normal.
 Factors 8: For the processor and equipment system applications in more depth (like watching DVD movies and 3D games) will make the time available to quickly bring down the battery.
 Factors 9: wireless devices and Bluetooth devices will accelerate the consumption of batteries must not wireless, you can use the function keys on the keyboard to save power.
 Factors 10: Using the ambient temperature – too high or too low, the use of ambient temperature will affect the core business of farm chemicals, thus reducing the operating time of A1045 battery life.
Overall, the laptop battery and the battery capacity is not only the size of mAh, equipment, energy saving technologies is also very important.
   Li-Ion battery is a class of lithium metal or lithium alloy anode material, the use of non-aqueous electrolyte solution batteries. First lithium batteries made by the great inventor Thomas Edison. As the chemical properties of lithium metal are very strong, which makes the lithium metal processing, preservation, use and environmental requirements is very high. Therefore, lithiumÂ
laptop batteries have not been implemented long ago.Â
The characteristics of lithium batteries
1. Has a higher energy than the weight of the energy ratio of volume;
2. Tension is high, only blood cell lithium battery 3.6 V is equal to three nickel-cadmium or Ni-MH rechargeable battery voltage range;
3. Self-discharge Hsiao Ke prolonged storage, which is the most prominent advantages of the battery;
4. No memory effect. Lithium is not the so-called nickel cadmium battery memory effect, so no need to discharge before recharging lithium 40Y6797 batteries;
5. Long life. Normal working conditions, the battery lithium / discharge cycles over 500 times;
6. You can fast charge. Lithium batteries can be used is generally 0.5 to 1 times the current capacity load, so the charging time is reduced to 1 to 2 hours;
7. May be freely used in parallel;
8. Because the battery contains no cadmium, lead, mercury and other heavy metals, environmental pollution, is the most advanced batteries green
9. High cost. Compared to other rechargeable batteries, lithium batteries are more expensive.
The structure of lithium batteries Â
Lithium batteries are generally two kinds of shapes: square cylindrical and long term.
   Battery internal winding spiral structure, with sophisticated equipment and highly permeable polyethylene film isolate positive and negative range training. Cathode of lithium cobalt dioxide, lithium-ion composition and the current collector comprises aluminum collector thin film. A sheet material carbon anode of lithium-ion collector and copper thin film composed of the composition of the current collector. Rechargeable batteries fill with organic electrolyte solution. PTC is also equipped with safety valves and components, so that the inspiron battery in an abnormal state and output short-circuit the battery to protect against damage.
   Single-cell lithium battery voltage 3.6 V, the capacity can be infinite, therefore, often single-cell lithium cells and parallel processing to meet the requirements of different occasions.
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