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Battery lifespan and data storage
The following table provides the battery lifespan indicated for two SAFT LSH14 batteries lifetime
estimates are based on distance measurements in the range 10 to 20 m and a model following a
Barcelona temperature profile. Bear in mind that consumption varies depending on the sampling
rate and environmental conditions.
Sampling rate
SF9@14dBm
SF8@20dBm
30 sec
9 weeks
12 weeks
1 min
18 weeks
23 weeks
5 min
18 months
22 months
30 min
5 years
5.5 years
1 h
6.5 years
7 years
6 h
8.5 years
8.6 years
12 h
8.8 years
8.9 years
24 h
9 years
9 years
Note that extreme temperatures could cut down the capacity. In this case, check battery
specifications. USB not used.
The internal node memory size is 4 MB. The Laser node stores up to 200,000 readings. Data storage
times are indicated in Table 3. Memory mode is a circular buffer. When the memory is full, logging
continues by overwriting the earliest readings. Besides the data from the sensor, the logger also
collects health data hourly, which indicates the battery voltage, the internal temperature of the
node and the node uptime.
Sampling rate
60 minutes
30 minutes
10 minutes
More than 10 years
More than 20 years
3.5 years
Indicative storage capacity of the Laser node.
