Suunto AMBIT2 User Manual page 120

NOTE: In case of abnormal capacity decrease due to defective battery, Suunto
warranty covers the battery replacement for 1 year or for at maximum 300 charging
times, whichever comes first.
TIP: If the device is taking GPS fix each second, the charge lasts at least ~15
hours. If the device is taking GPS fix only every 60 seconds, the duration of the
charge is ~50 hours.
The battery icon indicates the charge level of the battery. When the battery
charge level is less than 10 %, the battery icon blinks for 30 seconds. When the
battery charge level is less than 2 %, the battery icon blinks continuously.
Charge the battery by attaching it to your computer with the Suunto USB cable,
or charge with the USB-compatible Suunto wall charger. It takes approximately
2-3 hours to fully charge an empty battery.
TIP: Go to Movescount to change the GPS fix and recording rate of a sport
mode to save battery life.
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