Is it Useful to Continue to Charge after Green light is Bright

Someone had done a test with a mobile phone. After completing charging with the travel charge adapter, they use docking station charger to make sure the battery saturation degree. Is this testing method correct? This method is lack of rigorous, because the reference voltage of docking station charger is not equal to the mobile phone's reference voltage. When the mobile phone battery reaches saturation state, the docking station charger may not achieve saturation. The lamp of docking station charger is not the only standard to test really saturated. So when the green light of docking station charger is on, whether is it useful to continue to charge?

As the professional cell phone charger supplier, Goodscool analyses the question.

Green light is just an instruction. Whether it is full of charging or not lies in the docking station charger's control and judgment for the battery charging process. Now we will make lithium ion battery as an example. One is to control. First you can constantly current, and then to constant voltage to control the battery output. Second is to judge, judging whether the current is less than a certain value, it displays a green light, because modulus conversion precision and voltage accuracy are restricted. When it shows a green light, the battery will reach its real full charging less than 10%. Next, whether does the docking station charger continue to charge?

A. If docking station charger completely shut off charging circuit and does not continue with a constant voltage charge, then placing the mobile phone on the docking station charger again for a few hours also make no difference to the matter.

B. Docking station charger is continuing to constant voltage charge, and strictly controlling voltage not to beyond the rated voltage. And then continues to charge. It really can increase the capacity of the battery.

C. Docking station charger continues to charge, but its current does not control good. If you do not take care, the battery will beyond rated current. It has the trend to continue increasing and if you continue to apply current to the battery, then it will be happened imitation phenomenon, because lithium ion battery cannot absorb any overcharge.

D. There is still a kind of charging management chip which is the same with many mobile phone charge management. It uses pulse mode charging. When it shows a green light, the lithium ion battery has reached 100% full charging. Of course, if you continue to place for an hour, it also won't overcharge.