Using a computer USB portĬomputer USB ports usually do not produce enough charge to match the needs of the phone battery. But if not, you can check other options to find out what is wrong. All you need do is to plug the charger into a different wall socket and see if the battery starts increasing. But, it should be the first thing that comes to mind. This option is not a very common reason why the phone battery is decreasing while charging. A charger/adapter with a higher voltage can damage it, and so can a charger with lower voltage. There is a reason why the manufacturer recommends a particular charger for every device. If you have to use any other charger, ensure that they have the same capacity. If the charger is producing more energy than the battery needs, it is bad for your phone.Īs a preventive measure, ensure that you only use recommended chargers for your Android phone. If you do this regularly, it can cause the phone battery to be decreasing when you are charging it. Maybe you went on a trip and had to use a random charger to power your device. You can check to confirm if you are using the recommended charger from the manufacturer. ![]() Usually, this should stop once you revert to the recommended cable and charger. Sometimes, using the wrong charger and cable can be responsible for your phone battery decreasing while you are charging it. This should solve it, if it is an overheating problem. Turn off the phone first, and let it cool down before you start charging it. An overheated device cannot accept much battery charge, and the phone could end up not charging at all or the battery will be reduced instead. If your phone is already overheating, you may find the battery decreasing while you are charging it. The sub-board can be expensive to replace if the phone is no longer covered by warranty or any insurance product, but it is important that you are replacing it with a genuine product. If this is the reason your phone battery is decreasing while charging, the right thing to do is take it to a mobile phone technician for repair.ĭepending on the cause of the damage, it might be repaired or completely replaced. The charging port is connected to the sub-board, so charging issues like overcharging, overheating, voltage fluctuation can cause damage to the sub-board.Ī bad subboard (charging port) can also sometimes result from liquid damage especially when the liquid gets under the LCD screen. ![]() The most serious reason why your battery runs down while charging could be that the sub-board is bad. The reasons could range anywhere from a charger problem, to a charging port problem or even a bad phone. Or, perhaps the phone battery is rejecting the battery charge. Usually, it means that your phone is detecting a cable plugged in but no power is being sent to the phone battery. There are several possible reasons why this could be happening. If you find it is reducing instead, then you could be asking: why is my phone battery decreasing when charging? This is a very frustrating problem to experience in a phone, and some people find themselves tempted to smash the phone. When you charge your phone, it is supposed to increase the battery percentage.
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