Difficulty 1: Is it necessary to have a long life or a large capacity?

　　Many people think that the larger the capacity of rechargeable batteries, the better, so when buying, they often don't consider their actual needs and choose the bigger ones.In fact, large-capacity rechargeable batteries are much lower than small-capacity batteries in terms of battery life.For example, a 1600 mAh rechargeable battery may be recharged more than 800-1000 times under the premise of standard charging; however, a 2400 mAh battery can only be recharged less than 300 times under standard charging!This is one reason why after using rechargeable batteries many times, they feel more and more unused.However, for digital devices that consume a lot of power such as digital cameras and flashlights, large-capacity rechargeable batteries still have their advantages.    

Difficulty 2: The faster the charging, the shorter the life span?

　　There are many charging products on the market that claim; 2-hour fast charge;, ; 1-hour fast charge; and even ; 30-minute fast charge; have always been favored by many consumers, but everything has advantages and disadvantages.In fact, the fast charging technique is at the expense of the reincarnation life of the righteous rechargeable battery. For example, a 1850 mAh rechargeable battery may be recharged more than 800-1000 times under standard charging conditions; however, if the fast charging method is adopted, the number of reincarnations may be less than 200 times.In addition, rapid charging will affect the time of a single battery use, because fast charging can often only fill about 70%-80% of the battery capacity. For example, a 2000 mAh battery, if it is charged with a 2-hour fast charging method, it is estimated that it can only be charged to a capacity of 1500 mAh.Therefore, under the premise of existing skills, fish and bear paw cannot have both.It depends on your own needs to be fast, save time, or have a longer service life.      

Difficulty 3: Can the battery be charged with nine?

　　Many people may know such a common sense: If the battery is not completely exhausted and charged, the battery will remember the condition at this time as the initial capacity, and then reuse it after charging, the power is only as much as the newly charged power.This is the characteristic of nickel-cadmium rechargeable batteries that had a memory effect before, so they need to be fully discharged before charging.However, at present, nickel-metal hydride rechargeable batteries are more popular on the market. They do not have a memory effect, so they can be charged whenever they want.     

Difficulty 4: Should the new battery be "overcharged" for the second charge?

　　There is also a well-known common sense that all new batteries have to go through the process of overcharging every time they are charged, and it takes more than ten hours to make the battery reach fullness.This is still caused by nickel-cadmium batteries.In order to achieve more fullness, the previous nickel-cadmium batteries had to go through the "overcharge" process, which usually took about 12-16 hours.At the beginning, many rechargeable batteries launched by Nanfu, such as Nanfu, were fully charged after 6-8 hours, and their supporting smart chargers would actively end charging through maintenance devices such as voltage, time, and temperature. At this time, the practice of charging the battery for more than 12 hours is no longer practical.     

Difficulty 5: Can't different chargers be mixed?

　　Because each charger has a fixed output current, this output current is set for the battery of its supporting capacity, which is not suitable for the remaining capacity of the battery, so if it is mixed, the battery can easily burn out during the charging process or it can never be recharged.In addition, if the charger does not have insurance and maintenance functions such as intelligent anti-overcharge, it is very likely that the battery will explode due to continuous charging of the battery.

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