TomTom on Twitter: "@MFergusonAuthor Hi, Watch batteries not holding charge can sometimes be caused by the operating software misreading the charge in the battery. Please apply the Factory Reset described in this
Battery TomTom Spark 3 - TomTom Repair Team
TomTom announces Spark 3 GPS Watch, Adventurer hiking watch, and Touch wearable Body Composition band | DC Rainmaker
Amazon.com: MPF Products 280mAh PP332727 Battery Replacement Compatible with Tomtom Spark 3 GPS Activity Tracker and Fitness Watch : Electronics