On the mobile phone battery charge and discharge of certainty — make the best use of mobile phone Li-ion battery ad-filled features

Many people on the phone battery charge and discharge has been very little about, or go to a blind spot. If you have a blind friend please come in and take a look at this article, it will help you find the blind spot of exports. 01. Understanding memory effect battery memory effect is a battery failure, i.e. batteries with reversible fail to back of performance-memory effect is a battery long withstand specific working cycle, automatically maintain this specific tendencies. the earliest definition in nickel-cadmium batteries, nickel-cadmium battery of bag no memory effect, sintered battery memory effect. While nickel metal hydroxide (commonly known as Ni-MH) battery is not affected by the memory effect-defined constraints. Because modern improvement of powerboy NI-CD batteries, the memory effect has been reduced significantly, while another phenomenon replaces this definition, the nickel-based battery is "crystallize". Typically, nickel-cadmium battery is affected by these two effects combined impact, and nickel-metal hydride batteries are only affected by the "crystallize" memory effect, but also a nickel-cadmium batteries is small. In practice, to eliminate memory effect methods have strict specifications and an operating procedure. improper handling can backfire. For nickel-cadmium batteries, normal maintenance is regular deep discharges: average per month (or 30 iteration) to conduct a deep discharge (discharge to 1.0V/each section, the foreigner is called exercise), common use is to use a stylus or the means used to shutdown can mitigate memory effect of formation, but this is not the exercise, because instruments (such as mobile phones) will not be used before each section 1.0V/shutdown, to specialized equipment or lines to do this, fortunately, many Ni-MH battery charger comes with this feature. For a long time without exercise of powerboy NI-CD battery, because the cumulative memory effect, cannot exercise capacity reply, then you need more depth of discharge (foreigner that recondition), this is a very small current long time on battery discharge to one per section 0.4V process that need professional equipment. For Ni-MH battery, exercise frequency of about once every three months to effectively mitigate memory effect because Ni-MH battery cycle life far below the nickel-cadmium batteries, almost not to recondition the method. ¡Ø recommendation 1: per charge previously on battery discharge is not necessary, but also harmful, because battery life meaningless reduced. ¡Ø recommendation 2: use a resistor connected battery polarity for discharge is not desirable, current can't control, easily over discharge to 0V or even cause series battery battery polarity reversal. 02. the battery needs to be activated, please answer Yes battery needs to be activated, but this is not a user's to be done-I visited the lithium-ion battery production plant, lithium-ion battery manufactured prior to the following procedure: lithium-ion battery shell into the electrolyte-seal-Kasei, is the constant voltage charging, then discharge, so for several cycles, the invasion of electrode full activation of electrolyte, full to capacity to meet the requirement date, this is the activation procedure---min Jung, are testing the battery's capacity to select different performance (capacity) of the battery to collation, dividing the level of the battery, capacity etc. such out of lithium-ion batteries to the user's hands is activated before the. we commonly used nickel-cadmium batteries and nickel-metal hydride battery is to activate later shipped. some battery activation process requires battery in open State, activate later sealing, this procedure is only possible to complete the battery manufacturer. There is a problem, the battery factory manufactured battery to the user's hands, this time can be long, short, 1 month, length of the half-year, this time, because the battery electrode material passivation, so manufacturers will recommend the best initial use of battery for 3 ~ 5 full charge and discharge procedures, in order to eliminate the electrode material passivation, reached its maximum capacity. In 2001, three on the Ni-MH. nickel-cadmium and rechargeable lithium-ion battery, its initial GB capacity of detection are clearly established, the battery can be 5 times a deep place filled with deep, when there is a compliant, you can stop this experiment is well explained and I say this phenomenon. ★ So called "second activation" is also acceptable, users first-time use of the "new" battery to make several depth charge and discharge cycles. ● However according to my tests (for lithium-ion battery), the storage period in 1 ~ 3 months of lithium-ion battery, it's deep and dark place, its recycling capacity of phenomenon nearly non-existent. (I'm in the thematic area has about battery activation test reports) 03. first three minor charge 12 hours for me the problem is centered above the battery activation problem, just set the battery shipped to user hands electrode passivation phenomenon, in order to activate the battery to charge and discharge cycles of deep deep 3 times this fact into deep and is not to charge 12 hours problem. then my another article "on the mobile phone battery charging time" has already answered this question. ★ ★ ★ Answer is not required to charge 12 hours. Early cell phone Ni-MH battery because of the need to complement and trickle charge process, to achieve perfect filling full status, can take 5 hours or so, but there is no need for 12 hours., lithium-ion battery of constant current and constant voltage charging characteristics is its deep charging time without the need for 12 hours. For lithium-ion battery someone may ask, since the constant-pressure phase lithium-ion battery gradually decrease of current, is when the current small to the infinitely small is the real depth charge. I used to draw a constant-pressure phase current decrease time curves, it repeatedly curve fitting, find the curve can be used 1/x functions means close and zero-current, practical tests for lithium-ion battery itself exists of self-discharge phenomenon, the zero current is never reached. To 600mAh batteries, for example, setting up current 0.01C (i.e. 6mA), its 1C charging time is not more than 150 minutes, then set as current 0.001C (i.e. 0.6mA), it's charging time of 10 hours---this because the instrument accuracy issues, has been unable to obtain accurate, but is from 0.01C to 0.001C toleranceIn the calculation only 1.7mAh to more use for 7 hours in exchange for this the only par capacity is not any actual meaning. Moreover, there are other charging method, such as pulse charging lithium-ion battery with a way to reach the limit voltage 4.2V, it didn't stop minimum current judgement phase, usually 150 minutes after it is 100% filled full. many mobile phones are using pulse charging. someone once using a mobile phone display after full-filled, then use the charger to charge to confirm the degree of filling their mobile phone, this test method is less stringent. First charger shows Green is not really necessary and sufficient food or not detected as a basis. ★ ★ Detection lithium-ion battery charger full or not only final method is to test without charge (or discharge) State of lithium-ion battery voltage. The so-called constant phase current decrease its real purpose is to gradually decrease as a result of the battery charging current additional voltage arising, when the current small 0.01C, such as the current 6mA journeys and battery (usually 200 mohm) only, you can view at 1mV's voltage is no current status of the battery voltage. Secondly, mobile basis voltage does not necessarily equal to the reference voltage of charger, cell phone batteries that charge enough to a charger, charger is not considered to have full-filled, but to continue charging. 04. rechargeable batteries are the best for me there is a saying that rechargeable batteries used appropriately, in a cycle range appear the best State, is the largest capacity. this situation to be in a sealed Nickel-metal hydride batteries and nickel-cadmium batteries, if used appropriately (such as regular maintenance, prevent memory effect produced and accumulated), usually 100-200 circulation department reaches its maximum capacity, such as factory capacity 1000mAh NiMH batteries after the 120 loop, its capacity may reach 1100mAh. virtually all day * this NiMH battery manufacturer's specification of nickel-based battery described in cycle characteristics of map I can see this description of a nickel-based batteries. ★ best, generally 100 ~ 200 loop between reaches its maximum capacity for liquid lithium-ion battery, it is not there a recycling capacity of hump phenomenon, from lithium-ion battery factory to final battery scrap, its capacity for performance is to use a least once I in the lithium-ion batteries do loop performance when he had never seen the signs of a rebound capacity. * lithium-ion battery is not the best. It is worth mentioning that the lithium-ion battery is more susceptible to environmental temperature performance of different performance, 25 ~ 40 ° c ambient temperature will show their best performance, and low-temperature or high temperature status, his performance is greatly diminished. to make your lithium-ion battery fully demonstrated its capacity, be sure to carefully note the use of the environment, the prevention of low and high temperature phenomena, such as a mobile phone in your car in the foreground, the noon sun direct is easy to make it more than 60 degrees, the North of user battery standby time, same network situations, there is no longer a user of the South. 05. really charging current larger charge faster? "on the mobile phone battery charging time" has told the problem, for constant current charging of nickel-based batteries, so to speak, and the corresponding lithium-ion battery, this is not entirely correct. ★ ★ For lithium-ion battery charging, in the current scope (1.5C ~ 0.5C) constant current and constant voltage, constant current charging current value, and cannot be shortened to charge their lithium-ion battery time.