Something very common among users is to keep one or more mobiles in a drawer that have become outdated or in disuse for one reason or another, but nevertheless at some point in their useful life we may need them back to replace the withdrawal of our mobile personal or to loan it to someone. This is when the need to charge a mobile with its battery completely discharged appears .
Although on numerous occasions we have given you tips for storing phones that we will not use in a while , it is likely that you have overlooked the battery issue and now some time later the mobile cannot be turned on. This is because the battery has been depleted in this waiting time and it can be dangerous to charge the mobile for a long time afterwards.
The dangers of charging an empty battery
To put ourselves in a situation, the first thing we must know is to identify the risks that this entails. All batteries, regardless of their technology, can run serious risks when charging them after a period of exhaustion, among the most serious we find that they swell because the lithium or the chemical components inside do not react well to the charge after a long time in disuse.
This occurs because the chemicals inside have been completely “dead” and could remove the gas they make up due to heat. This could end with a short circuit, a swollen battery if we detect it and stop in time, or it could even end up exploding. It would not be the first time that it happens and although each time the safety mechanisms in the batteries are more advanced, we must always be careful.
Humidity is another important factor in uncharged mobile batteries , it can become embedded in the phone and when connected to the current, the same situations mentioned above could occur. Other cases can end in flames, if instead of swelling the battery the sudden change in temperature ignites with the help of other components of the phone. Although we are talking about precautions, in case it happens to us, it is best to bury the mobile in a pot with earth or sand, since the water would not react well in any of the cases.
Recommendations for charging a discharged battery
Do it at a stable temperature
The first thing we must do is take the mobile phone out of the box or the place where we keep it is to leave it in a room for at least 1 hour at an average temperature of between 15 and 25 degrees, which is usually in homes. This is the ideal one for batteries and although it may seem somewhat insignificant, it can make the difference between a good response from the chemical components of the battery.
Use the original charger in good condition
We always recommend using the original mobile cable and charger, although in this case we must also make a note. In case the mobile has a fast charge of more than 30W, it would be better to opt for a standard charger with less power at least at the beginning of the charge.
Do not use the mobile, let it charge
The rush can lead us to want to use it while charging and this can be very negative for a discharged battery . Be patient, because after being without a battery for so long, it may not react well to charging and discharging at the same time.
Don’t fully charge it the first time
Nor should we charge the discharged battery to 100% the first time, with 20% is enough to turn it on and check that it works . Later we can charge the rest with the original charger in case of being a fast charge, but continuing without using it until it is finished.
Change the battery to avoid risks
If the time that the downloaded mobile has passed exceeds 2 years, the risk increases. Also, we can look at the back of the device to see if the battery has swollen. In case we have serious doubts about its possibilities, it is advisable to take care of a specialized center and replace it before an accident can occur.