Amazon.com: MPF Products 280mAh PP332727 Battery Replacement Compatible with Tomtom Spark 3 GPS Activity Tracker and Fitness Watch : Electronics
650mah Sport Gps Watch Battery For Tomtom Spark 3 Pp332727 For Tom Tom Cardio + Music Spark3 Rechargeable Accumulator Battery - Mobile Phone Batteries - AliExpress
3.7V 280mAh Rechargeable Li ion Battery For TomTom Spark 3 TomTom Spark Cardio II Smart watch High Quality Replacement|Replacement Batteries| - AliExpress