How do you detect the quality of lithium-ion battery?

The battery plays an important role in our life. It is used to store energy for all kinds of electric appliance, especially the lithium-ion battery. It has wide usage, and is often used in some small, portable appliances, such as mobile phones. Batteries belong to consumption materials, and often charge or discharge. No matter how good the battery is, it may have a certain cycle life. What's more, lithium-ion battery has higher price than other batteries, so try to buy lithium-ion batteries with good quality, so that it can be used for longer time. Now let's learn the method of checking the quality of lithium -ion battery.

Lithium battery detection method of quality:

1, The fastest inspection method is to test the resistance and the maximum discharge current, good quality lithium battery, internal resistance is very small, and the maximum discharge current is very large. Using a range of 20 multi meter, short directly connect the two electrodes of lithium-ion batteries, generally should be around 10 a current, or even higher, and can maintain for a period of time, relatively stable is good battery.

2, See the appearance. Look plump level, such as the average of around 2000 MAH lithium-ion batteries, the volume is relatively large. It seems to be full work more sophisticated or packaging.

3, The hardness can with handle gently knead or moderate pinched in the middle part of the lithium battery, moderate hardness, no soft squeezing pressure, proving lithium batteries are relatively high quality batteries.

4, The weight remove the outer packing perception about the battery weight is more heavy, if the thick belongs to high quality batteries.

5, In the process of lithium battery charged work, about 10 minutes continuous discharge battery if not hot at the poles, battery protection board system perfect, general with high-quality lithium-ion battery protection board quality is better than ordinary lithium batteries.

The main causes of error test are:

1. The discharge time (266 minutes) is slightly less than the standard provisions of the state of 5 hours, namely discharge current slightly large, considering the battery internal resistance factor, can make the test results is slightly smaller.

2. The precision of constant current source is not enough, is lower than the national standard (current changes less than 1%), mainly of transistor temperature changes.

3. The ammeter accuracy is lower than the national standard (grade should be 0.5 or less accuracy)

4. Battery charging method and national standard slightly different (national standard charging time can't more than eight hours), but meet the used battery capacity conditions.

Based on this, the individual test about the battery capacity is 1700 MAH, is far lower than the nominal capacity is 3800 MAH.

The cycle life of good quality lithium-ion battery is about two or three years. If lithium battery is not durable, its power consumption is very fast, and its charging time reduce. In order to guarantee the use time of lithium-ion battery, you should pay attention to the protection of lithium-ion batteries. For example, the new battery generally needs to charge for 12 hours in the first three times in order to activate the battery. People tend to charge the mobile phone when it is power off. But the right way to protect the lithium-ion battery is charging it when it has half capacity remaining.

The page contains the contents of the machine translation.