EK280
10.4 Modem battery life
The modem battery life depends on various conditions such as ambient temperature and reception field
strength. The data given here is calculated for adverse conditions, i.e. battery life is normally longer. It can
however be even shorter in some cases. The data provided should therefore be taken as a guideline.
i
Not only the total duration, but also the number of time windows is relevant to battery life.
So for example the battery life for a monthly 4 hour time window is differs from that for four time
windows, each lasting 1 hour.
i
At low ambient temperatures, the data transfer duration is limited.
Please take into consideration the information given in chapter 0.
10.4.1 Monthly data transfer
Battery life
(Years)
monthly
1 hour
Readout
4 hours
time
12 hours
window
10.4.2 Weekly data transfer
Battery life
(Years)
monthly
1 hour
Readout
time
2 hours
window
10.4.3 Daily data transfer
Battery life
(Years)
10 minutes
monthly
Readout
15 minutes
time
30 minutes
window
1 hour
Application Manual
Readout duration (minutes)
5
10
15
12.0
12.0
10.0
12.0
12.0
10.0
12.0
11.4
9.4
Readout duration (minutes)
2
5
10
10.0
10.0
5.7
10.0
8.9
5.2
Readout duration (minutes)
1
2
5
6.5
3.8
1.7
6.2
3.7
1.7
5.3
3.3
1.6
4.1
2.8
1.5
30
9.0
8.2
6.3
15
4.0
3.7
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