What is the battery rated capacity？
Refers to a certain discharge conditions, when the battery is discharged to release thepower cut-off voltage. IEC standard nickel-cadmium and nickel metal hydride batteries in the 20 ± 5 ℃ environment, with 0.1C to 0.2C charge for 16 hours when discharged to1.0V release of electricity for the battery’s rated capacity, expressed in C5, while forlithium-ion battery, provides that at room temperature, constant current (1C), constant voltage (4.2V) under the control of charging, charging 3h, then 0.2C discharge to 2.75Vwhen the release of electricity to its rated capacity, battery capacity of the unit Ah, mAh (1Ah = 1000mAh).
What is the residual capacity of the battery discharge？
When the rechargeable battery with large current (such as 1C or above) the discharge, because the diffusion rate within the current existence of the Ambassador of the “bottleneck effect”, resulting in battery capacity is not fully released when the voltage has reached the end, then a small current, such as 0.2C can continue to discharge until the1.0V / branch released when the capacity is called the residual capacity.
What is the battery nominal voltage, open circuit voltage, the midpoint voltage, the termination voltage？
The nominal battery voltage refers to the normal operation voltage of the process shown, the second nickel-cadmium nickel-metal hydride battery nominal voltage 1.2V; secondarylithium battery nominal voltage of 3.6V;
Open circuit voltage refers to the outer circuit is disconnected, the battery potential difference between the two extremes;
End voltage means the battery discharge test, the provisions of the end of the dischargecut-off voltage;
Midpoint voltage refers to 50% capacity discharge the battery voltage, high currentdischarge is mainly used to measure the series of high-rate discharge battery capacity isan important indicator of the battery.
Common way of charging the battery, which has several？
Nickel-cadmium and nickel metal hydride battery charging method:
1 Constant current charge: charge current throughout the charging process for a certainvalue, this method is the most common;
(2) constant voltage charging: charging voltage across the charging power to maintain a constant value, current in the circuit with the battery voltage increases and decreases.
3 constant current constant voltage charging: The battery is first charged with constant current, when the battery voltage rises to a certain value, the voltage remains constant,the circuit current is reduced to very small, eventually to zero.
Lithium battery charging method:
Constant current constant voltage charging: The battery is first charged with constant current, when the battery voltage rises to a certain value, the voltage remains constant,the circuit current is reduced to very small, eventually to zero.
1. What is the performance of these two batteries?
Include voltage, resistance, capacity, pressure, self-discharge rate, cycle life, sealing,security, storage, performance, appearance, etc., there are other over charge, over discharge, weldability, corrosion resistance and so on.
2. Rechargeable batteries and alkaline battery comparison:
In most cases, the nickel-metal hydride battery can be completely replaced bydisposable batteries, which power-hungry equipment, especially for the time.
Although alkaline batteries are rated at 1.5 volts, but will start declining after dischargevoltage. Looking at the entire discharge process, the average voltage of alkaline batteries is approximately 1.2 volts, and nickel-metal hydride battery is very close to the main difference is in the beginning alkaline battery discharge voltage of 1.5 volts, and ultimately decreased to less than 1.0 volts, and nickel-metal hydride battery most of the time will remain at about 1.2 volts.
3. Battery reliability test items：
1. If the prolonged use of the universal charge on the cell phone battery, it will enrich my knowledge current is too small for universal <80-150mA> affect the normal functioning of the battery, the normal charging current 300-800 mA, recommend continuous use of the universal charge to be after a week direct charging or direct use of the original chargewith a special type of charger-current activation of a second, more use of the normal functioning of the battery capacity and longer life.
2. Mobile phone battery do not use more than 2 months is too long an electricity placed,subject to standard current charging and normal use of this cycle 2-3 times a call toachieve the best results.
3. If the use of mobile phone battery contacts found during theoxidation of metal with rust. Please use the alcohol or the other thing to wipe clean.
4. To carry the process to have the battery protection device, if installed in their pocket orinstalled in his pocket for pocket-metal contact of metal with a short-circuit the battery, the battery internal protection circuit, so long will damage the battery circuit protection system. Recommended to use special tools to carry to protect portable batteries.
5. Buy a new battery, take the original battery runs out first, and then fully charged the normal use of discharge, cycle 3 to 4 times a battery can be restored to normal status, help to extend battery life.
6. Buy a new battery when the battery is the best place to get sales measure what the voltage meter. Voltage 3.6V above the normal. 3.6V below the self-discharge may be too large.
7. Battery is best placed in 15-25 degrees Celsius, the temperature is too high for too long put will cause hair cells made up drum, thus seriously damaging the battery life but will also bring some insecurity.
8. Suggest that you never buy virtual capacity that exceeds the normal capacity of the standard large-capacity battery, which is a kind of irresponsible consumers. Most of thisis to use some of the bad batteries, the battery did not intend to do long-termmanufacturers, they only immediate benefits, regardless of consumer safety and health. Suggest that you do not buy particularly exaggerated large capacity battery.
Now calculate how many mobile devices around you? Mobile phone, MP3, tablet PCs, laptops, digital cameras, handheld, navigation, etc., these devices are battery powered mobile, and battery life is the most worrying problems. Mobile phone, for example, affect the battery life in addition to the system power factor, battery maintenance is also necessary to understand how the knowledge, unless you can live with replacing the battery or external battery backup, in fact, even the phone like the iPhone battery can not be replaced .
Maintenance may be a single battery charge-discharge cycles have little effect, but after a long time there is contrast, lithium-ion batteries after a year or more, there will be loss of battery capacity, and better maintenance of the battery wear and tear will be much better. Also circulated on the Internet before many of lithium-ion battery maintenance methods, but not the same. For example, after the new battery to get back to full 12 hours before emptying, the maximum capacity of three times to activate, but also say that once a month to complete charge and discharge process is conducive to maintenance.
Battery University Site recently released an article on how to extend the battery life of the article, use the battery put new conclusions. They claimed that, after experimental results confirm that lithium-ion battery is the best way to maintain mild use, fast filling up fast, which use similar machinery and equipment, with greater frequency, the more the number, the more the loss of battery fast. The smaller the depth of discharge of lithium batteries, use longer, if possible, try to avoid frequent full charge and discharge.
The user, your battery life by 10%, 20% charge is the best on the remaining battery charge in 50% of the time you can, but try to avoid the phone prompts to start charging when power is low, no matter what the conditions are not the battery power runs out. If you go out, try to use the larger capacity battery or mobile power.
In addition, they also pointed out that the use of environmental temperature also have an impact on battery life, high (30 ℃) or too low a temperature will form a loss of battery life. Such as regular power adapter used to connect the laptop, it is best to remove the battery, the fact that the battery will not charge the formation of damage, because the battery will not charge after full charge, but do not pay attention when using the laptop at the bottom of ventilation will make the temperature hot, this is the impact on battery life murderer. Of course, if there is a better use of environmental or cooling base, the battery power when you can avoid losing unsaved data.
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When the mobile phone battery shorter or memory effect of aging, many people will be directly replaced. If you are a good saver or a good discover, we will find that there aresome cell phone batteries repair method allows us to revitalize the aging of the battery.
This mobile phone battery repair recommended by many users is experimental and summed up, suggest you try. Will be discarded mobile phone batteries wrapped in newspaper, then the outside two layers of plastic wrap, then placed in the freezer, removed three days later, remove thepackaging into a cool place to dry for two days and then charge.
This mobile phone battery repair on a professional explanation: mobile phone battery charge and discharge process is a process during which cells within the yin and yang chargeeach other to pay the charge hit. The reason why more and more without the batteryused, because in a normal room temperature, the electron kinetic energy inside therelatively large, so the battery is active, leakage is relatively frequent. And the battery into the low-temperature environment, the surface of the lithium-ion battery electrolytemembrane and the micro-structure, and the interface they will change significantly, leading to the internal battery temporarily active, to reduce leakage current, so rechargethe phone’s until the power-up time will increase.
If you wanna your mobile phone battery in good condition, still have to pay more attention in the normal use of mobile phone battery maintenance, the mobile phone battery better for us. Please do not discard the discarded mobile phone batteries, the proposed transfer to a specialized mobile phone battery recycling point.