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
TomTom Spark (Runner 2) In-Depth Review | DC Rainmaker
Amazon.com: MPF Products 280mAh PP332727 Battery Replacement Compatible with Tomtom Spark 3 GPS Activity Tracker and Fitness Watch : Electronics
Hsabat Runner 2 350mah Battery For Tomtom Runner 2 Smart Watch Batteries - Mobile Phone Batteries - AliExpress
Battery replacement for TomTom Runner, Spark, Golfer and Adventure - YouTube