Today, a colleague of medion battery Units divided, let me help you to take a look Take-home examination took place during the low force by lithium in the long-term placement, leading to over-discharged Dell Inspiron 6400 battery, lock protection circuit

In this case, if you do not want to replace the battery can only open the DELL XPS M1530 battery disconnect circuit protection, high voltage batteries to direct
The return to more normal discharge threshold, then enter the circuit to begin charging Italian state Blue Sky
This approach requires the forcible destruction of the battery case to separate the look and again and the circuit requires special welding equipment, time and effort that is directly related to the lithium-ion Dell Inspiron 1720 battery also very uncertain.
Charge and discharge control and protection circuit suggests that it is for the battery charge and discharge control and protection, the principle that it works, because the process of charging the lithium HP Pavilion DV3000 Battery to provide a very full, if the voltage drop that something, so that the control circuit detection If this situation is that the Battery full, the work and the power is off protection circuit prevents overcharging, discharging of the battery voltage basically stable and unchanging, and very little energy in the Dell Latitude E4300 battery is present only when a sudden drop when loop detects this situation is that the battery ran out and inform the protection circuit cut off power supply to prevent over-discharge the battery life shortened.