The battery status rebounded.Previous internal investigation of similar events identified that in some cases, pulse generators reach the 25% battery indicator earlier than expected, and later rebound to 75-100% without any significant programming changes.This behavior was determined to be due to an increased duration of high battery impedance during generator battery beginning-of-life.M106 generator batteries exhibit a low battery voltage reading behaviors at the beginning of the battery¿s life, due to well-understood battery impedance behaviors of the generator batteries.The battery voltage rebounds when approximately 4% to 5% of the initial battery is consumed for most generators.Due to this known behavior, the generator has a built-in 0.5v offset added during the first 7.5% of the battery consumption to mitigate the potential for artificially low voltage measurements during this period.This offset is then removed once 7.5% of the initial battery is consumed.In a few cases, the beginning of life impedance behaviors may extend past the 7.5% consumption point, which can result in a temporary low battery status.When the behavior extends past 7.5% battery consumption, this is not an indication of a device failure, but rather an outlier in the expected timeline of the battery voltage drop.In these cases, the generator battery is expected to re-bound and will exhibit normal battery depletion timelines.The event captured in this report is consistent with the investigation described above.No further relevant information has been received to date.
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