Amazon.com: MPF Products 280mAh PP332727 Battery Replacement Compatible with Tomtom Spark 3 GPS Activity Tracker and Fitness Watch : Electronics
New 3.7v Li-polymer Battery For Tomtom Spark Running Watch Acumulator 2-wire Plug+tools - Digital Batteries - AliExpress
SP322826PA Battery for TomTom Spark 3
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