Impulse Dynamics OPTIMIZER Smart Mini Patient Manual page 39

With regular charging, should your OPTIMIZER Smart Mini IPG reach its
20th year of service, your doctor will need to assess the condition of the
battery during your routine check-up visits. To help facilitate this battery
assessment, please fully charge your OPTIMIZER Smart Mini IPG 7 days
before your scheduled routine check-up visit.
In addition, there is a risk that a problem will develop with a component or
a lead necessitating surgery to replace the IPG or lead(s). Since your
OPTIMIZER Smart Mini IPG is not a life-sustaining device, you are
unlikely to be placed at risk if your device should not operate as expected.
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