Lithium battery charging method How should lithium battery be recharged?

Lithium batteries refer to batteries containing Lithium(including metallic lithium, lithium alloys, and lithium ions, lithium polymers) in the electrochemical system. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium metal batteries are usually non-rechargeable and contain metallic lithium. Lithium-ion batteries do not contain metallic lithium and can be charged.

In the use of lithium batteries, it should be noted that after the battery is placed for a period of time, it enters a dormant state. At this time, the capacity is lower than normal, and the service time is also shortened. However, lithium batteries are easily activated. As long as the battery is activated after 3-5 normal charge and discharge cycles, the battery can be activated and the normal capacity can be restored.

I) Tools / raw materials

Special charger, measuring current meter.

Methodologies / steps

In general, before the lithium battery is delivered, the manufacturer performs activation processing and performs pre-charging. Therefore, the battery has residual electricity. The newly purchased battery is a lithium ion battery. Then the first 3 to 5 charges are called the adjustment period and should be filled for more than 14 hours. Fully activate the lithium-ion activity. Lithium-ion batteries have no memory effect, but they have a strong inertia. They should be fully activated to ensure that the best performance can be achieved in future use. Lithium batteries have been fully activated before they go out of the factory. They do not need to use long-term charging methods to activate the activity of lithium ions. The first charge can be filled after the battery is used up.

Some automated smart fast chargers, when used to indicate a signal signal shift, are actually filled with only 90 inches. The charger will automatically change and fill the battery with slow charging. Do not immediately power the charger off, it is best to give the battery a period of recharge time, the battery will be full and then use, otherwise it will shorten the use time.

Before charging, lithium batteries do not need to be discharged, nor can they be discharged. The chargers of lithium batteries currently produced do not have discharge functions. If the charging speed can be adjusted, it is recommended that everyone should charge slowly when charging to reduce the fast charging mode.; Don't charge more than 24 hours, either slowly or quickly. Otherwise, the battery is likely to burn the core because of the huge electron flow generated by the long power supply.

The life of a lithium battery is determined by the number of repeated recharges and discharges. The lithium battery can be continuously charged and discharged about 500 times. After that, the performance of the battery will be greatly reduced. It should be avoided as much as possible that all the rest of the battery will be discharged and recharged. Otherwise, with the increase in the number of charges, The battery performance will slowly weaken. It's hard to keep the battery on hold.

Do not expose the battery to high temperature or cold, like a three-volt day, should not put the battery under the sun, exposed to the sun; Or take it to the air conditioning room and put it in the air conditioner. When charging, the current product is returned, and it is normal for the battery to have a bit of heat.

If the battery is placed for too long and is not used, it is best to apply to the maintenance department for an activation treatment of the battery. You can also use a DC constant charger to adjust the voltage to 5 ~ 6V and the current to 500 ~ 600mA reverse connection battery. Note that the touch is released and repeated for a maximum of three times. After such treatment, the original charger is used for "adjustment period" charging.

The longer the charging time is, the better. After the battery without the protective circuit is filled, the charging should stop. Otherwise, the performance will be affected by heat or overheating. The method for calculating the theoretical charging time of the battery is as follows: The battery's power can be divided by the output current of the charger. For example, for a battery with a charge of 800 MAH, the output current of the charger is 500 MA. The charging time is equal to 800 MAH/500MA = 1.6 hours, Of course, this is only a theoretical calculation of the full power time. When the charger display is recharged, it is best to give the battery about half an hour of recharging time. Lithium-ion batteries must choose a dedicated charger, otherwise it may not reach saturation state, affecting its performance.

III. Points for attention

1, charging time to fill the standard time;

For a long time without having to check against the high temperature in use.

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