Device Manual
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Battery Life Expectations
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Battery Life Expectations
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Your device is designed to be run on mains power most of the time. However, it has an internal
backup battery which will be used in the absence of external power. These battery life predictions
assume the following:
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• GPS Early-wake set to 20s
• Clear sky conditions
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As with all portable battery powered devices, battery life can be significantly shortened by extreme
temperatures and some usage patterns. Key factors which will shorten the number of transmissions
possible on a battery charge are:
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• Use of GPS Hot Mode and Burst Mode
• Poor positioning, so poor view of the sky (most likely!)
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Interval
Transmissions
Hours
Days
Weeks
Continuous
1500
25
1
5 minutes
900
75
3
15 minutes
850
210
9
1.2
30 minutes
700
350
14
2
1 hour
600
600
25
3.5
4 hour
550
2200
90
12.8
8 hour
500
4000
165
23.5
10
