2024-07-16 00:00:00 If a phone no longer charges to 100%, then the battery is not always to blame. In most cases you are using a defect cable or charger. Not every cable is suitable for charging and not every charger keeps what he promises. Test the cables and chargers to find the best combination. This app will help you. The app shows the charging current in milliamperes. A negative value means the battery is discharging and a positive value means the battery is charging. There is no specific rule for the charging current. However, some sources say that the charging current should be around 10% of the battery capacities in mAh. This means that a battery with 3000 mAh should be charged at about 300 mA. Note