subject: Lead-acid Battery: It Is The Early Emergence Of A Rechargeable Battery [print this page] lead-acid battery: it is the early emergence of a rechargeable battery, which is usually used in car batteries. A common lead-acid batteries and sealed lead acid battery pull valve types. The former is not convenient and the use of a more serious impact on the environment is gradually being replaced by the latter. We use the general for such emergency light batteries, the normal cycle of life from 1000 to 1200.
(B) Ni-Cd battery: it is the earlier onset of the battery. That is now widely used by all players, rechargeable battery. The nominal voltage of single battery 1.25V, its capacity (the capacity of rechargeable batteries with current (mA) multiplied by the hours (h) to represent. If a battery capacity of 500MA, 500MA, said the batteries can discharge a current hours) for the general on the 5th battery (AA type) in 450 ~ 800MA between the number of times the normal charge cycle over 500 times, but if used incorrectly, can significantly reduce the frequency of use. There is a nickel-cadmium batteries are known as the "memory effect" phenomenon. When people do not complete discharge of nickel cadmium batteries charged, the battery will automatically "remember" to live this point does not discharge completely. The next charge to this point, it will show the same end with the battery discharge characteristics. Although not discharge the battery completely so, but this time as capacity is reduced, this is the so-called "memory effect", which essentially produced a tree in the electrode crystal structure, this "memory effect" is characteristic of nickel-cadmium battery of. It will seriously affect the battery's capacity, reducing battery life, so nickel-cadmium batteries were thoroughly prior to its discharge, it will be completed in the discharge after charging, you do not use these batteries again charge the battery, the vast majority of commercially available low-cost will automatically charge the charging current is small, the battery is full at least 15 hours, and do not prepare discharge function, damage to a larger battery. Some features better confirmation of fast charger charging, would enter the pre-processing stage, at this stage, the charger on the battery is completely discharged, so that each section of the battery is completely discharged, so that each cell voltage down to 1.0v or so to eliminate nickel-cadmium battery "memory effect." Pretreatment on nickel-cadmium battery, direct access to fast charge stage, after the fast charge transfer trickle charge, the time usually 2-3 hours.
(C) Ni-MH battery: it is the recent development of a new rechargeable battery, its performance with similar nickel-cadmium batteries, but its higher energy density. 1 5 Ni-MH battery capacity between the 1000mah to 1300mah addition, it does not exist "memory effect" on the environment pollution-free, so it was called "Green batteries", of course, higher price.
(D) of the lithium-ion battery: it is the recent development of the battery, the biggest advantage is that the higher energy density, but its price is high, the general electronic products used in high gear, but no more than discharge in the discharge voltage, but not greater than the discharge current discharge.
In order to properly use various types of rechargeable batteries good, full-ting long battery life, charging the battery properly is critical, if the charging method is not correct, will shorten the battery life.laptop battery
