rechargeable battery used in automatic shutdown
rechargeable battery used in automatic shutdown
rechargeable battery used in automatic shutdown, can prolong life
Correct understanding of: lithium batteries no memory effect, can be used with the charge with, count the number of how much charge
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In order to measure the life of rechargeable batteries of different brands, cited the international concept of cycle number of charge cycles: 25 to constant current mode the battery charge current 1C 150 minutes, then constant discharge current 1C to 2.75V cut-off for the first cycle; taken are repeated until a sub-discharge time less than 36 minutes counting the end of the cycle must be greater than 300 times the total number of otherwise deemed to have failed. Accordingly, many people simply charge and discharge a battery life that will reduce time, so hard to use each time delay, do not consume to the automatic shutdown will not charge. In fact, this understanding is very funny. Characterization of charge because the number of lithium battery life is not easy even for as long as the charging time, the normal everyday life and laboratory test methods use completely different.
Lithium battery life is short and the number of charge cycles without major relationship, and this is the advantages of lithium batteries and charm. Nickel-cadmium batteries must be used rechargeable, nickel-cadmium batteries because of the memory effect is serious
Misunderstanding 3: multi-chargers green light after charging for a full battery to charge more
Correctly understand: only a small number of chargers that, more harm than good
Now a large number of the charger has voltage detection function, to automatically stop charging 4.2V, but some more advanced charger, the voltage to determine the value will be automatically transferred to the trickle charge to a small current to the battery slow charge, this charger and then charge more if the green light to charge for a very full indeed. Without this feature the charger, even if the battery will not charge on top one day more full. The frightening thing is some cheap charger, poor control accuracy of the 4.2V, 4.2V, can not be less than the full, higher than the 4.2V of the overcharge will cause serious, significantly reduced battery life.
Average user better battery green light will win, this time the capacity has been basically full, completely full of meaningless pursuit of mental illness. Thus even with low-cost battery charger can also minimize the harm suffered.
Misunderstanding four: the greater the charger output current logo, the faster the battery charge
Correct understanding of: charging current control circuit by the charge regulation, and supply-independent
Charger current logo is that the charger switching power supply load capacity. Mobile phone, for example, charge the charger line switching power supply it is only really control the charging current and charging time is the phone's internal battery management circuit; Cradle Chargers are both included switching power supply charge control circuit is also included. Simply the pursuit of high-current fast charge is not conducive to longer battery life; and charger switching power supply because of poor quality if the output voltage lower than 5V Dell Latitude D610 Battery Dell Latitude D620 battery Dell Latitude D630 battery Dell xps m1210 battery, it will cause the battery can not really full.
Misunderstanding 5: lithium battery is full of storage, can reduce the capacity loss
Correct understanding of: the loss of lithium batteries is completely different principle and lead-acid batteries
This idea can be described as wrong. Reduced life lithium batteries because it has the aging characteristics of the electrodes, even without the use of charge and discharge some of its capacity will be permanently lost. The reason is the battery electrode material from the factory after its failure has already begun the process. Under different temperatures and power failure at different speeds, the new factory after tests found that 40% of lithium battery to maintain power after one year at 0 can save 98% of capacity, fully charged the same temperature, then stored for one year left 94% of capacity, full power at 30-40 environment, save for one year, only 65% of capacity.