Generic zigbee motion (no temp) - battery 200%

I'm using this driver for a couple devices. One sonoff motion sensor and a TPLink MS100 motion sensor. I'm noticing both devices occasionally report the battery at 200% a bit later I will see it back at 100%.

I'm not sure if this is how the device reports, or how the driver is handling what it's reporting, or for that matter how it's displayed.

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