One of the key points in the use of a GPS tracker is its autonomy because it can be frustrating to have to recharge it regularly. One can also be disappointed when they don’t obtain the same autonomy as indicated by the manufacturer. It is important to know that this autonomy is not the same for all but will depend on several factors. Here are the main reasons.
The time interval between each position
The time interval between each position is the frequency at which the tracker will retrieve a position and send it to you. And this frequency will play a big role in the life of your battery. Indeed, the more the tracker performs actions (recovering its position, sending it, issuing an alert) the quicker its autonomy will be reduced.
This explains why some manufacturers announce enormous autonomies; the sold tracker will not simply offer real-time tracking, so the battery will be partially preserved. At Weenect we have chosen the compromise between regular position frequency and autonomy because we know how important it is to have a real-time position when trying to find a loved one.
But you have the control: it is possible to select the time interval between each position in the settings of a tracker.
The search for a connection
Another factor playing a crucial role in the life of your battery is the search for a GPRS (2G) internet connection. When the tracker does not capture any network, and therefore can not connect to the server, it will continually seek to recover a connection. This sustained research will increase its level of activity and therefore the battery consumption. This explains why a difficult or weak connection (GPRS internet network – 2G) can strongly impact the autonomy of your tracker.
The search for a GPS signal
Finally, looking for a valid GPS signal also consumes a lot. If your tracker is indoors, for example, without a GPS signal available, it will seek to communicate with the satellites continuously for a certain period of time. This research will reduce its autonomy.
Fortunately, at Weenect, we use a motion detector (accelerometer) to 1 / stop the search for a GPS signal when the tracker is stationary (as it no longer moves there is no need to follow its position) and 2 / alert the tracker that it must look for a GPS signal when it is moving again (for better reactivity when going from inside to outside).
The 3 factors described in this article explain to a large extent the variations that can be observed for the autonomy of a GPS tracker. This is why Weenect always communicates battery life in ranges; the low range being representative of the worst possible conditions of use, the high range representing the consumption in standby mode (GPS tracking on demand).