• How can I use Witty if I have USB Type C?

It is possible to use Witty even if you have a USB type C thanks to small adapters that convert the USB type C into the classic USB type A or, by charging the device with a 5V charger. The adapters and the cable with USB type C are available on our store.


  • Does Witty work with wireless charging pads?

Yes, Witty is able to read the energy supply required by the battery even using wireless charging as long as one device is charged at a time.

However, there are some wireless charging bases on the market that are equipped with an LED that indicates their operation, which results in higher energy consumption. In these cases Witty may not be able to disconnect the device from the electrical current. In this case you will need to recharge the device with the supplied cable.


  • Does the phone already have an end of charge control chip?

All lithium-ion batteries have an integrated protection circuit (it is located between the battery poles and the connection cable to the smartphone motherboard). This circuit acts in two ways: avoid both that the voltage exceeds 4.4V, conservative value with respect to the limit of 4.5V, whether come down at a voltage beyond below 3V beyond which the battery can deteriorate rapidly (the safety limit beyond which the battery must no longer be discharged is 2.7V). Indeed, when you read 0% of charge on the display, the remaining battery charge is 5% this is to prevent the battery from reaching the discharge limit voltage.

This protection circuit it does not manage recharging battery but physically disconnects the battery in case the voltages or currents come out of safety parameters. Since the voltage imposed by the charge control circuit typically reaches 4.35V when the battery has reached 100%, the protection circuit will not intervene in any way, leaving the battery connected to the end-of-charge voltage.


  • Does my smartphone stop charging when it reaches 100%?

Modern smartphones have optimized charge management. However, the battery is maintained at its end-of-charge voltage of 4.35V even after reaching 100%, so that it does not discharge overnight.

It is as if after inflating a balloon you continue to keep it under tension so that it does not deflate.


  • Witty does not disconnect the phone.

Witty does not disconnect the device from the mains as soon as 100% appears on the screen but when the circuit inside it detects that the energy requirement of the device being charged has been reached. Normally the Shut Off takes place in a period of time between 10 and 30 minutes after reaching 100%. Witty was designed to do that DON'T is charging stopped the moment you are using the device while charging.


  • In the morning I find Witty turned on. Because it does not work? How can I solve?

When Witty does not disconnect the smartphone from the mains, you can try the following procedure to verify that it is not a malfunction:

    • Try closing all applications;
    • Try to optimize the consumption of the apps using the function included in the battery settings (Only for Android smartphones)
    • Try to recharge the device by turning off Wi-Fi and / or Bluetooth;
    • Try to charge the device in airplane mode;
    • Disable the "optimized charging" mode in the battery settings.

These procedures may become necessary when the smartphone requires more energy from the charger than it should due to apps and / or services that work in the background or to the continuous search for the signal (if the phone is in an area of ​​the house with little signal , the device will emit even more electromagnetic waves to be able to hook up to the telephone cell, consuming more energy than it should). 


  • The battery needs to be charged up to 80%.

The charging strategy up to 80% charge is correct as, by avoiding the battery being charged to its maximum voltage, its life is considerably extended. The voltage increases with the increase in the percentage of charge, in fact, at 80% the battery is applied to the battery a voltage of about 4.15 / 4.20V, up to a value of 4.35V when it is at 100%. However, partially charging the smartphone results in a shorter runtime, and the consumer who has a hectic life may suffer.

The optimal solution for those wishing to have a 100% performing device is to disconnect the battery from its maximum voltage allowed when the battery is charged, limiting its exposure for an extended period of time. The end-of-charge controller "should" disconnect the cell from voltage causing its discharge cycle to begin. This is why Witty comes into play. 

Just as <strong>relaxing</strong> your muscles after an <strong>intense</strong> workout.


  • Why do batteries become less efficient after a few months of purchase?

We are moving into a future where lithium-ion batteries will be the protagonists even more than they already are; a technology that is as performing as it is obsolete if not properly managed. In fact, it is estimated that a generic lithium-ion cell of any device loses about 12% of its useful life annually if the charging phase is not managed correctly. To better understand this concept, we can make an analogy with cars. The cars are sold with an average consumption declared by the manufacturer, which varies considerably according to the driving mode. With a sporty driving you will certainly have a higher average consumption than a slow pace. The same goes for smartphones. When the charging phase is not correctly managed, the battery capacity wears out in the short term, causing an increasingly shorter runtime. In fact, if the battery is kept at its end-of-charge voltage of 4.35V even after reaching 100%, a significant decrease in discharge cycles is caused, from 500 to about 150.


  • How does the smart charging introduced in the latest generation smartphones work?

"With iOS 13 and later, the iPhone uses machine learning for try to understand yours charging habits daily so that the Optimized charging option is activated only when the iPhone expects it to be connected to a charger for an extended period of time ", so Apple explains the new feature that presents some problems.

In the moment in which you had to wake up earlier of the "usual", one would find the smartphone to one carica less than 100%; if you had to wake up later  battery would continue to be maintained at its end-of-charge voltagecausing rapid wear.

Nit is not said that the smartphone is able to learn habits of the consumer, especially in individuals who lead a hectic life without well-defined routines.


  • If I unplug the cable from the smartphone, Witty stays on.

This precaution prevents Witty from disconnecting the device from the charge in the event of an interruption in the domestic electrical network, autonomously resuming the charge when the mains voltage returns (within 5 minutes). This also allows you to disconnect the device and reconnect it (within 5 minutes) without having to press the Witty start button again.


  • If I use the smartphone while it is charging, Witty does not disconnect the battery when at 100%.

Witty is able to understand if the device is being used during the charging phase, preventing it from being disconnected from the mains before reaching 100%.


  • Once the battery is charged Witty automatically disconnects the power supply. Does it stay off until I unplug and plug my devices back in or turn it back on?

Witty remains off after disconnecting the device from the power and does not turn on again until the power button is pressed again. It is important that the battery, once charged, begins its natural discharge cycle. Only by acting in this way can its ability to store energy be preserved.


  • Can it happen that in the morning I find the smartphone at a percentage below 100%?

Only in the event that you have a worn out battery and you charge the phone while switched on, the Wi-Fi, notifications and the continuous search for the data connection could cause the capacity to drop by a few percentage points (Battery Drain). Consumed lithium batteries, in fact, tend to have a slight voltage drop after they are charged and this is read as less than 100% charge percentage.


  • Does Witty work with fast charging?

Using fast charging or applying a load greater than 2.400mA will cause the Li-ion cells to overheat and stress. Consequently, the ideal recharge to ensure that the battery of your smartphone does not wear out prematurely is a slow and controlled recharge.

We at Witty, therefore we recommend fast recharging during the day only if you need an energy boost, and to use Witty at night to enjoy a slow and controlled recharge.

Witty is compatible with 3V / 9A QC2 (limit voltage supported by Witty). However, we recommend charging the device at 5V / 1A and up to 4A max. Witty's goal is to preserve the useful life of the battery.


  • When should the power button be pressed?

The button must be pressed when Witty is inserted into the USB charger and connected to the socket. It is recommended to press the button after the device has been connected to the cable. Once pressed, Witty will start charging it.


  • Can Witty be used for different devices?

Yes, but not at the same time. Witty can be used with all devices that recharge via USB type A up to 5V / 9V and 4A max.


  • Does Witty work with the new Type-C chargers?

You can continue to use Witty by using an adapter that converts USB Type C to Type A.


  • Can I use Witty on other devices besides the smartphone?

Yes, Witty works with all devices that charge via USB type A up to 5V, such as IQOS, Bluetooth speakers, AirPods, power banks, tablets, etc.