SPOT Satellite Messenger Battery LifeWhen SPOT is purchased 2 lithium batteries are provided. Users need to understand that only lithium batteries will work with the SPOT. One of our testers had inserted alkaline batteries inside SPOT and the unit quit working from then on. The battery life of SPOT under normal usage includes approximately one year if it is powered on and unused. When tracking or SPOTcasting the unit battery life is approximately 14 days. In this mode a message is sent every 10 minutes. When the 911 mode is active batteries should last up to 7 consecutive days. There is a message sent every 5 minutes in 911 mode. SPOT should be able to send up to 1900 OK messages with the lithium batteries. We recommend always having a back up in case of emergency.
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