A, charging sense
Here, first, use rechargeable batteries charging is the important step. A reasonable charge for prolong battery life is very good, and he will be for charging brutal has a great influence on the battery life. In an article said that current lithium batteries are basically according to each individual, each of the general, each product also provide their because of charging equipment, universal, when used as follow their instructions can be used. So the paper introduces main battery is nickel cadmium battery and refers to the nimh batteries.
Every cell of nickel nimh batteries and two ways, is known to us all the “quick charge” and “slow filling”. Fast and slow rechargeable battery is an important concept, the fast and slow rechargeable battery can correctly grasp.
First, fast and slow filling a relative concept. Someone once asked me the charger is 200mA, charging electric current is fast. The answer is not absolute, should answer for certain, it is fast battery charging the battery, and for some, it is slow. We judge how fast or slow filling filling?
For example a section 5 of electric capacity for nimh batteries, and another quarter 1200mAH for 1600mAH. We put a battery electric capacity, called 1C is a logical concept, Australia, Australia, the same is not equal.
In charge, charging electric current is less than 0.1 C, we called Juan flow charging. As the name suggests, is refers to the current is small. Generally speaking, charging the battery can Juan flow of filling, without damage, but the battery life Juan flow in charge of time is too long, so rarely used alone, but the combined with other charging ways.
Charging electric current in 0.1c – 0.2 between C, we called slow charging. Charging current than 0.2 C, less than 0.8 C is rapid charging. When charging current more than 0.8 C, we call super-fast charging.
Australia is a logical concept because instead of absolute value, thus filling the quick conversion 1C according to slow filling is a relative value. In front of the 200mA examples mentioned in 1200mAH battery charging electric current is slow, but for 700mAH filling the battery is fast.
Know the speed of concept, we still need to understand the situation of battery charger can correctly charging. On the market at present mainly divided into the charger automatic charger constant-current charger and two

Second, the constant-current charger
Constant-current charger is the most common market from nickel cadmium battery charger, age, we began to use the constant-current charger. Constant-current charger usually use slow charging electric current, its use simpler, only the battery in battery charging of storehouse. Note that the time to recharge the accurate calculation.
In charge of the time have a simple calculation formula: provides hour-by-hour = 150 C/charging electric current. For example: 1200mAH battery, the battery charger, time 150mA current for 1800mAH / 150mA is 12 hours. In many cases, of course not calculate the exact time, we can choose from to recent half an hour with convenient time. Example: the charger to 1400mAH 160mA, for the battery, 2100mAH time for 160mA/about 13 hours without calculation to points.
Constant-current charger of simple structure, stable work, is a good way to recharge the battery life, the effect is small. But it also has its limitation, must first time, along with the increasing capacity of nimh batteries, constant-current charging the time needed to use more long, also brings some inconvenience. Therefore, in recent years, automatic charger also gradually popular
Third, automatic charger
In this fast automatic charger two more and more popular, it has the charging speed, safety features. But some people have doubts about it, for quick charger basic use rechargeable battery, faster flow of these people fear it will affect the battery life. So the actual circumstance how?
First, be sure to large current is charging battery life is very small, in many cases, we have to use rechargeable battery, even ultra-high speed quick recharge current sometimes can achieve 2C or higher. Large current is not real killer cell influence to the battery life-span of current is the hot charging.
We should use the battery than nominal voltage battery slightly higher voltage, and battery charging electric current to produce a back emf will, therefore, is part of the current to offset the potential energy, and freely into heat. When charging electric current is bigger, more energy is converted to heat, temperature is higher. High temperatures of rechargeable batteries are harmful in slow, because the constant-current charger is slow, in charge of heat can be controlled within, so does not need to adopt the special measures. But in the automatic charger, using fast charging flow will produce higher temperature. Therefore currently on the market fast automatic charger using various methods to reduce the temperature of the battery, usually use is cosine method, i.e. not with constant current charge, but like cosine wave current strength, such a change could alleviate the accumulation of heat, which will temperature control in a certain range. Because this kind of chargers will no longer use constant current charge, and past constant-current chargers have obvious difference
Use quick charger, another problem is when charging time if forget, after the stop charging the battery for damage will far outweigh the slow constant-current charger overcharge harm. Therefore, in order to solve the problem too quick charger generally adopted such as voltage gradient judgment method to judge whether the battery methods, the charger is close to full use of the control circuit or IC chip to complete this task. When the battery is close to full, control circuit automatically turn Juan flow of battery charging pattern, Juan flow charging. Using Juan flow of battery charging electric current is obvious, as previously mentioned, Juan flow to charge the battery charging full, secondly, need not worry too, so use such charger is the biggest advantage of time don’t have to. The use of specific method can check their instructions, prevent improper operation.
Quick charger has a branch is high-speed charger, this kind of chargers applications, design, structure and process is very complex, so the price is expensive.
In some special occasions, people need in a very short time, ready to use the battery charger using high-speed. Due to the great superhigh speed charger charging electric current, some even use 2C – 3C certification, the current problems, particularly severe heat using cosine wave just enough, so the battery charger many USES of wave in a cosine after insert a very short discharge this method. This approach can alleviate the potential cost charge current generated heat accumulation, thus further control temperature.
Four, discharge
The article has introduced the rechargeable batteries, memory effects, we also know when memory effect gradually accumulated, can make the actual use of the battery capacity decreased dramatically. To reduce memory effects brought by the negative effect, an effective method is to discharge. Generally due to nickel cadmium battery memory effect more apparent, the proposal is in use repeatedly charging for 5-10 times as a discharge, and the nimh batteries can be better memory effects in charge, and use of 20-30 times after a discharge.
In the market of high-grade charger itself with some functions, but most of the discharge of cheap charger is not discharge function, what should we do? By understanding the discharge principle, we can also trying to cell discharge.
We already know, nickel cadmium battery and the nominal voltage is nimh batteries, but actually, 1.2 V battery voltage is a change of value, as if sufficient electricity, around 120 V around fluctuations. In general 1V – 1.4 V, different brand fluctuates between the batteries due to the different voltage fluctuation, not identical
For battery discharge is using small discharge current, voltage drops slowly, the battery down to 0.9 1V V – between, should stop discharging. It is not recommended to put battery discharge to 0.9 V, doing so will cause excessive discharge, make the battery is irreversible damage, said rechargeable batteries is not suitable for use in the home appliance, it is because of the remote control of the current is small, long time in remote use easily cause excessive discharge. After a correct discharge battery, you will find the capacity of the battery of surprise and restored to the original level, so that the capacity of the battery when decline, had better make a discharge.
To do a simple discharge battery, the method is a small, but DianZhu as load must be used to monitor voltage meter, in case of excessive discharge of change.
For what is the charger, choose quick charger or slow constant-current charger, this basically see yourself. Such as often use a digital camera out of equipment such as friends, should choose quick charger, in order to meet the requirements on time, and can even buy high-speed charger, and USES only listensto equipment friends, constant-current charger can satisfy needs
In the correct knowledge, we must charge after can better use of their rechargeable batteries. Please don’t get bogged down in the rapid charging.