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A phone that takes five, six, or seven hours to reach a full charge when it previously charged fully in two hours is not simply ageing gracefully — it has a slow charging fault that is affecting daily usability in a meaningful way. Having to leave a phone on charge overnight just to start the day with a full battery, or finding it still below 50% after hours of charging, is a clear sign that something in the charging system is not performing correctly.
Slow charging is one of the more diagnostic-intensive phone faults because it can arise from any point along the charging pathway — from the wall socket to the charger adapter, through the cable, into the charging port, through the charging circuit, and finally into the battery itself. A partial failure anywhere along this chain reduces the effective charging current and slows the entire process.
Common causes of slow charging include a charging port with partially obstructed or damaged contacts reducing the current the cable can deliver, a battery that has aged to the point where it can only safely accept a reduced charging rate, a faulty charging IC that is throttling current delivery below the correct level, and the use of an incompatible or low-quality replacement charger or cable that cannot deliver the rated current. Ambient temperature also affects charging speed — phones in very hot environments deliberately slow charging to protect the battery.
Prologic Technologies on Luthuli Avenue uses a USB power meter to measure the actual current and voltage entering the device during charging, providing an objective baseline for diagnosis. This measurement immediately confirms whether the issue lies before or within the device, guiding the repair precisely.
Luthuli Avenue, Nairobi CBD 0723 763 173
