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Operating Guide
Lifetime of the Lithium
Battery Pack
Remaining Battery
Capacity stored in the
Battery Pack
4 | VU.SH.E1.02
SonoCollect 210/211
As described in the previous chapter the lifetime
of the lithium battery pack depends heavily on
the configuration of the radio reception (interval
and duration) and the frequency of the FTP data
upload. Another parameter, which must also be
taken into account, is the number of different
10 radio meters
(Battery lifetime in years, radio reception duration 90 seconds each)
1 upload /
Reception interval
month
1 hour
2 hours
4 hours
6 hours
12 hours
24 hours
100 radio meters
(Battery lifetime in years, radio reception duration 90 seconds each)
1 upload /
Reception interval
month
1 hour
2 hours
4 hours
6 hours
12 hours
24 hours
Please note that the given battery lifetimes are
estimated values and may not reflect the lifetime
under specific operating conditions. Especially
the following parameters have a heavy impact
on the battery lifetime:
• Temperatures below -5°C or above +40°C
diminish the battery lifetime.
• The quality of the GSM / UMTS network
and whether a fast UMTS or only a slow
GSM network is available determines the
necessary time for a data upload. The
longer the data upload takes the lower the
battery lifetime.
The battery pack of the SonoCollect 210/211
contains a memory device where the calculated
remaining battery capacity is stored. Therefore,
it is possible to disconnect the battery pack
from the SonoCollect 210/211 but still having
the information about the remaining battery
capacity.
consumptions meters received; since the number
of stored radio telegrams has an impact on the
duration of the FTP data upload. The tables
below are giving an estimation of the lifetime
to expect from the battery pack at different
configurations:
2 uploads /
month
3.9
3.0
5.7
5.3
9.8
8.8
10.0
10.0
10.0
10.0
10.0
10.0
2 uploads /
month
2.9
2.7
5.1
4.5
8.2
6.6
10.0
7.9
10.0
10.0
10.0
10.0
It is pointed out here also that the variation in
battery lifetime may be factor 4 or more under
very bad conditions (bad GSM / UMTS network,
low / high temperatures, etc.). This means
the battery lifetime may be only 25% of the
estimated battery lifetimes shown above.
Since the remaining battery capacity of
lithium batteries may not be measured but
only estimated using specific algorithms, this
calculated remaining battery capacity might
under certain conditions not be 100% exact.
4 uploads /
15 uploads /
month
month
2.8
2.1
4.8
3.1
7.4
4.0
9.1
4.4
10.0
5.0
10.0
5.3
4 uploads /
15 uploads /
month
month
2.3
1.3
3.6
1.7
4.8
1.9
5.4
2.0
6.3
2.1
6.8
2.2
© Danfoss | 2019.01
31 uploads /
month
1.7
2.0
2.4
2.5
2.7
2.8
31 uploads /
month
0.8
0.9 a
1.0 a
1.0 a
1.1 a
1.1 a
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