Proper use of a laptop, tablet, or smartphone battery

This article will focus on how to properly use your laptop battery, tablet, or smartphone and keep it as long as possible.

First, we need to make a few remarks:

1. There is no such thing as a memory effect in the batteries.
2. Most batteries over time degrade and nothing can save them.
3. Lithium-ion batteries last about 2 years.
4. Nickel cadmium is even shorter in life.
5. In everyday use, the full discharge of batteries is harmful and is not recommended unless a battery calibration procedure is performed.
6. Lithium-ion batteries can be charged almost no matter how much charge they have in them without damaging the battery. For everyone else, it's nice to charge when they reach about 40% of their charge.

Do I disconnect the charger when the battery is charged?

In the old laptops there was no circuit to control the charge of the battery. Nowadays, this is totally unnecessary. Once the battery reaches its full capacity, it stops charging, and the power is fully used for laptop operation. Once the charger is disconnected, the battery is automatically transferred to the battery.

When do I turn on the battery to charge?

For all modern batteries, total battery drainage results in great stress on itself and to faster and degradation. It is most appropriate to turn on the device when the battery reaches about 40% of your charge, and it is recommended that you let it fully charge.

How Long Is The Life Of Batteries?

All batteries have an optimal number of charges.
Lithium-ion and lithium-polymer have about 1000-1200 cycles.
Nickel-Cadmium batteries have about 500 cycles.


Regardless of how many charging cycles have passed, the batteries are made so that the first year they deliver up to 100% of the set charge and then begins a battery degradation process, delivering between 70 and 80% at the end of the second year. Batteries undergoing heavy work after the second year deliver about 50% of the initial charge.

How do I save the battery?

The biggest pest of the batteries is heat. Summer is very important to be careful where we leave our portable devices. If we leave them in direct sunlight, this will surely lead to a degradation of the battery faster and even to its destruction. The same effect is observed when leaving the device in a car or enclosed room in direct sunlight.