How long can the smart water meter battery work?
And the total capacity of the battery is not the actual value available, the average best battery, that is, 80% of the battery capacity. With the use of late, internal resistance increased, power consumption is also increasing.General manufacturers use for lithium battery with capacity of 2000mAh, the actual available capacity is about 1200-1300mAh, according to the water quality and the use of different users have many differences in 3-6 years for the more common case.
At present, the average static current of water meter module is below 3uA, and the total power consumption is about 970mA in 6 years. (the flow of valve switch is about 80mA/9s). This is only theoretical value, and there is no question about it. And if the pipe network is in the state of pressure (0.4Mpa), the current of the switching valve usually needs more than 90mA.
Smart water meters in daily use, power consumption in the following areas:Battery self discharge, valve switch power consumption, credit card communication power consumption, liquid crystal display, power consumption and so on.
