How to correctly charging laptop battery

In Laptop battery using process, do not deliberately request to 100% charge, or use completely without electricity untill automatic shutdown, the correct way is to begin to charge about 20% , stop charging  about 98% full. If the machine has the power calibration procedure, then you can calibrate the battery when you feel significantly reduced power consumption, so that protection circuit can fully work. For early notebook batteries (Ni-MH or Ni-Cd), really need to fully charge and discharge in order to maintain good battery capacity, but for the lithium battery, it is not necessary but may damage the Dell Inspiron 1501 battery. It is said that lithium batteries have no memory effect, in fact it’s not entirely correct. It’s only a very small memory effect. Materials for lithium battery are very sensitive to the temperature, the use frequency and so on. After using for a period time, the battery will be aging, the performance of the most intuitive is the reduction of using time.

The natural ullage is an important reason, and inadequate maintenance is another important reason. A well-designed lithium battery has a very good protection circuit to prevent excessive charge and discharge. For over-charging and discharging of the hp 361742-001 battery will rapidly reduce the battery activity. Because of the role of the protection circuit, the user repeated several times to fully charge and discharge, in fact, it is impossible to achieve “full” level. It does not make sense to do so. Sometimes WINDOWS show there is 20% of battery capacity, you can use 30 minutes, but not long after, suddenly the machine automatically shut down, this is because the battery has been aging, the battery protection circuit can no longer monitors the real capacity of the battery. In the normal battery depletion, the protection circuit original parameters have been unable to properly reflect the actual situation of the battery, so the power calibration procedure is to correct the benchmark protection circuit parameters to accurately reflect the actual capacity of the battery. But this correction process will often take two or three complete charge and discharge, and as previously mentioned, fully charge and discharge will reduce the Dell XPS M140 battery activity, so please not frequently used.