Battery drain on Spark

fakamminga
fakamminga Registered Users Posts: 9
Legendary Explorer
edited January 24 in TomTom Sports
My sportwatch (TomTom Spark) indicated a drained battery this morning after charging last night but when I hooked it up again it shows an almost full battery.
The only change I have made to the watch is updating the firmware to its latest.
What is wrong?

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