Introducción
If the shaver is left dead and uncharged for too long, the battery depletes to a level that is unrecognisable by the charger. Many may think the device is past its prime, since the battery does not charge, but it is not the case.
A quick fix to get the device back online is to provide 3.7 - 4.2 V to the battery, enabling the circuitry to power up, and be recognised by the charger.
-
-
Follow the disassembly/teardown guide to gain access to the device internals.
-
-
-
Disconnect the motor, and remove the motherboard and battery assembly from the housing.
-
-
-
Provide 3.7-4.2 V to the battery using a voltage-controlled power supply or buck converter. (A charging circuit might work, but since the battery voltage is so low, it might be undetectable)
-
Depending on how depleted the battery is, the period of 'charge' will vary. Monitoring the rate of voltage discharge provides an indication of the "holding capacity" of the battery.
-
Quickly assemble the shaver when the battery holds a voltage for a few minutes.
-
-
-
-
Briefly testing the system by pressing the power button shows signs of life.
-
-
-
Place the shaver on the charging dock or cleaning station to begin the charging process.
-
-
-
Once charged, the shaver worked as expected.
-
Naturally after many years of use, the battery shows sign of reduced capacity.
-
To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
Cancelar: No complete esta guía.
Una persona más ha completado esta guía.
