Il mio smartphone scollega la batteria al termine della carica?

<transcy>ASO Technology</transcy>

Our Smartphones aren’t that smart in the end

<transcy>Does my smartphone disconnect the battery from the power supply at the end of charging?</transcy>

The answer is no.

All portable devices, including the latest generation of smartphones, that recharge their battery via USB stop the current flowing to the battery after reaching 100%, but continue to keep it at its end-of-charge voltage.

As reported by various industry studies (e.g. 'Battery University', a website published by the well-known technology provider Cadex Electronics Inc.), not disconnecting the charge leads to rapid wear of the battery by decreasing its charge/discharge cycles from almost 500 to about 200.

Find out more about batteries

<transcy>Why don't the big manufacturers have an interest in making batteries last?</transcy>

According to a survey conducted by Statista, 54% of smartphone owners admit to changing their device when it becomes obsolete and the main cause of obsolescence is an underperforming battery (this occurs on average 1 year and 9 months after purchasing the device).

Only 2% change it every year to upgrade to the next version.

It is therefore in the manufacturer's interest to encourage consumers to buy new products. In fact, the device is replaced after about 3 years in Europe and after 4 years in the USA.

In addition, replacing the battery of a smartphone or tablet in an authorised centre costs the consumer between 60 and 100 euros, generating a significant mark-up for manufacturers.

Buy Witty

<transcy>Double the lifespan.</transcy>

On its website, Apple recommends visiting an authorised centre to replace the battery when it has a life of around 80%. This replacement takes place on average 1 year and 9 months after the purchase of the device.

After reaching 100% charge the current flow to the battery is interrupted. However, the battery is then maintained at its end-of-charge voltage to ensure that it does not discharge overnight, producing excessive stress on the lithium-ion cell electrodes.

Witty uses ASO (Automatic Shut Off) technology to detect when the battery is fully charged and disconnect the device from the mains accordingly.

Using Witty will double the life of the battery to almost 4 years after the initial purchase.

<transcy>ASO Technology</transcy>

ASO technology, completely Made in Italy, patented by Witty Srls, was developed by a team of electronic, mechanical and management engineers following a two-year study in the laboratories of the University of Rome "La Sapienza".

The ASO is able to read the energy that the smartphone requires from the charger and disconnect the battery from the mains when the device’s energy requirement has been met. It's like unplugging the charger from the electrical outlet. Unlike all charge controllers, ASO does not read the voltage or capacity of the battery, but analyses the current flow between the device being charged and the charger.

Disconnecting the battery when fully charged prevents it from remaining at its end-of-charge voltage even after reaching 100%, a situation that is extremely damaging to the lithium cell electrodes, thus allowing the battery to lower to a more comfortable voltage and begin its discharge cycle.

It's like relaxing your muscles after an intense workout.

How to charge the smartphone?

<transcy>Not So Smart</transcy>

To prove that our smartphones are not so smart, a lab test was carried out to analyse how a latest-generation smartphone handles battery charging.

In the video test, you can see how the smartphone keeps the battery at its end-of-charge voltage of 4.35V even though it already reached 100% some time earlier.

Later, it is shown that the device is only disconnected from the mains when fully charged thanks to Witty.

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