When batteries are too low to send the data (less than 3.65V), for instance in the spring (after a long winter storage) or sometimes when you get new devices or when charging by the sun/solar panel in the last days was not optimal (due to an extremely long period of a bad weather or because of improper placement of the solar cell – wrong direction, shading of solar panel).
Step-by-step guide
For charging of 4G Trapview devices you will need USB A to micro B cable:
Charge the batteries by connecting the device with the computer or you can also charge it via phone charger.
Charge the batteries for at least 24 hours. OPERATE LED lights up during charging.
The device has to be switched OFF during charging!
Battery jumper must be attached ON both prongs during charging!
When charging multiple devices, it is best to use an USB hub.
