Modern devices like smartphones , mobile phones, laptops, tablets, etc. work from an autonomous power source, which often acts li-ion battery.
The wide use of this type of battery is explained by the simplicity and cheapness of its production, as well as excellent performance characteristics and a large margin of charge-discharge cycles. And in order to prolong the life of the device and battery, you need to know how to charge the li-ion battery correctly and what errors you should not make.
Rules for charging li-ion batteries
For the convenience of users, most batteries are equipped with a special controller, which will not allow the charge to go beyond the critical marks. So, when the lower discharge limit is reached, the circuit simply stops supplying the device with voltage, and if the maximum permissible charge level is exceeded, the incoming current is cut off.
So, how to properly charge li-ion batteries: to put the device on recharging it is necessary when the charge is not less than 10-20%, and after reaching 100% of the charge it is necessary to leave the battery on recharging for another 1.5-2 hours, because at the very In fact, the charge level at this point will be 70-80%.
Approximately once every 3 months, you need to carry out preventive discharge of the battery. To do this, you need to "plant" the battery, then re-charge the fully discharged li-ion battery for 8-12 hours. This will help reset the battery's threshold flags. However, frequent discharge to zero for li-ion batteries is harmful.
How can I charge li-ion batteries?
Often, users have a question about how to charge a Li-ion battery of a smartphone or other device. To charge batteries of this type, the DC / DC method is used. The nominal voltage per cell is 3.6 V, and it does not
The recommended charging current for such batteries is on average 0.7C and the discharge current 0.1C. If the battery voltage is below 2.9V, the recommended charge current is 0.1C. A deep discharge can lead to bad consequences, up to the damage of the battery.
Li-ion batteries can be charged when they reach any level of discharge, without waiting for critical values. During recharging, as the voltage approaches the maximum, the charge current decreases. At the end of the charge, the charge current completely stops.