Suunto AMBIT2 2.0 User Manual page 132

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.
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.
16:30
Tuesday
Charge the battery by attaching it to your computer with the
supplied USB cable, or charge with a USB-compatible wall charger.
It takes approximately 2-3 hours to fully charge an empty battery.
TIP: Go to Movescount to change the GPS fix interval of your
sport modes to save battery life. For more information, see
8.1.3 GPS accuracy and power saving.
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20.9.