How to make Lithium-ion Battery last longer

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Lithium-ion batteries have been the first choice for mobile phone manufacturers for a decade now.

When compared to other types of batteries, lithium-ion batteries have a higher energy density, a lower weight, low self-discharge, and, above all, their insensitivity to the so-called memory Effect off.

This term describes a loss of capacity that occurs when a corresponding battery is frequently not fully charged and/or only partially discharged and the lower capacity used is more or less “memorized”.

However, even modern NiMH batteries are hardly affected by this problem.


Tips to make Lithium-ion batteries last longer

For example, anyone who buys a new smartphone is likely going to see a charge level of 40 to 70%.

Since the phones are not powered on in warehouses or retail shops for months, it is easy to get the optimal charge level for longer storage.

Chemical aging processes take place more slowly at lower temperatures, so it is advisable to charge batteries to around 60% and store them.

If the battery is fully charged, which should ideally be avoided, it should be disconnected from the charger as soon as possible in order not to be kept permanently in a high state of charge by the trickle charge.

For example, if the battery level is 80%, you should avoid charging it completely before use.

An empty battery should be charged as soon as possible to at least 30%, preferably 70%.

If the battery is empty, you should avoid charging the battery quickly, e.g. Below 20% charge, and then use the device.

If you get a new device, it is not necessary to charge the battery before using it for the first time or even to go through multiple complete charging cycles.

The word “conditioning” is often used to describe this mistake. Lithium-ion batteries already have their full capacity in the delivery state.

Slow charging usually increases the service life. The Rule of thumb here is – the less heat is generated when charging, the gentler the charging process.

However, if you don’t want to use your battery for more than two years, you usually don’t have to worry about it.

It can make sense to completely discharge the battery and fully recharge it once every few months. 

This does not help the battery, but allows the device to readjust the charge level indicator.

When the charge level approaches 100%, charging is slower and slower, as the charging current is reduced to protect the battery. 

The number of charging processes has no influence on the service life; it only depends on the complete charging cycles. 

So if you use wireless charging, for example, and occasionally recharge your smartphone by a few percent, you won’t damage the battery.



Ideally, Lithium-ion batteries and lithium-polymer batteries should always be kept at a charge level between 30 and 70%.

Complete charges and discharges are to be avoided if possible.

Every now and then, you can make an exception to recalibrate the charge level indicator or the charging electronics.

New batteries can immediately be used normally without conditioning.

However, If the batteries need to be stored for a longer period of time, they should be charged 50 to 70% and kept in a cool place.

Very high or low temperatures should be avoided, this applies in particular to charging processes.

When choosing the right charger, the most important thing is quality.

In reality, of course, these rules of conduct can rarely be followed religiously.

Power users often have no choice but to fully charge their device to get through the day, and in the evening the remaining charge often tends towards zero.

If you charge your device at night, you will hardly set the alarm clock to stop charging it when it reaches 70%.

Nevertheless, handling the battery as carefully as possible not only saves utility bills, it helps your phone and the environment.

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