34.2 Charger Features
The following explains the features of the OPTIMIZER Mini Charger.
• IPG-Charger Coupling Signal Strength Indicator: Bar graph display depicting
connection between the charger and the OPTIMIZER Smart IPG
• “Call Doctor” Indicator: 7-segment LED display for numerical codes
• Charger Battery Status Indicator: Bar graph display depicting the state-of-
charge of the OPTIMIZER Mini Charger battery
• Start Button: Start button for the OPTIMIZER Mini Charger
• IPG Battery Status Indicator: Bar graph display depicting the current state-of-
charge of the OPTIMIZER Smart IPG battery
Figure 63: OPTIMIZER Mini Charger Features
34.3 Charging Method: Transcutaneous Energy Transfer
Inductive energy transfer is the only practicable transcutaneous recharging method.
Inductive energy transfer is based on an oscillating electromagnetic field generated by a
primary coil. Magnetic fields can penetrate human tissues with nearly no attenuation.
Therefore, the field energy can be picked up by a secondary coil which is connected to
the electronic circuitry of the implant and be converted back into electrical energy.
The charging current of the OPTIMIZER Mini Charger is fixed at 90mA.
The OPTIMIZER Mini Charger operates at a frequency range of 410 kHz – 490 kHz.
Coupling Signal
Strength Indicator
Charger Battery
Status Indicator
IPG Battery
Status Indicator
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