Is Dell Inspiron 15 3558 good

Dell Inspiron 15 (3558) original battery 40Wh

  • If you mainly operate your notebook with a power supply unit, you should remove your battery and put it aside, this saves charging cycles. You can recharge it after one or two months at the latest.
  • Make sure that you do not discharge the battery completely, as this can lead to a "deep discharge", which means that the battery can no longer be charged. You can recharge the battery with at least 5-7% remaining capacity.
  • If possible, charge your battery while the notebook is switched off, as the optimal temperature for batteries is between 10 and 30 degrees Celsius according to the manufacturer. The temperature of a notebook that is switched on usually exceeds 30 degrees Celsius.
  • If you have several batteries, simply use them alternately.
  • After a long period of storage or first use, a battery needs 2-3 full charging processes before it has reached its full capacity again.
  • Avoid high temperatures such as direct sunlight, storage in a hot car etc. (high temperatures accelerate the self-discharge and aging of your battery)
  • Li-ion batteries have approx. 500-1000 charging cycles. A charging cycle corresponds to the complete charging and discharging of the battery. For this reason, we recommend our customers to remove the battery (if possible) or to insert the old battery if the notebook is only operated from the mains for a long time
  • In addition, in the best case scenario, you should never allow a battery to be fully charged or empty. It would be ideal to always operate the device between 20% and 80% charge level.

The manufacturers integrate battery protection functions into the newer notebooks in order to guarantee the longest possible battery life.

E.g. at Samsung (partly also at Sony): Samsung Battery Life Cycle Extension function

The function means that Samsung batteries are only charged up to 80%, which is intended to achieve a longer battery life. The function is set in the notebook's BIOS.
The so-called memory effect of the Li-ion battery is negligible for normal use with a laptop, smartphone or tablet. Complete full charging after complete discharge is therefore not necessary.

In fact, the opposite applies to most devices: It is advisable to always keep the charge level of the battery in the range between 20% and 80%. The reason for this is the relative sensitivity of Li-ion batteries to overcharging on the one hand and deep discharge on the other. But you can't go wrong here either, because all devices have control electronics, which virtually take over the "battery care". In the case of Apple, for example, this means that the charging process changes when the charge level is around 80%: Before this, the energy storage device is filled as quickly as possible, and from this point onwards the so-called "trickle charge" follows. This is significantly slower, but conserves the battery and thus increases its service life fully automatically.

However, a day-long connection to the power grid is not good; the discharging process, i.e. moving the lithium ions, should be carried out again and again.