To Charge wirelessly, it is necessary to have a charging mat that is suitable, as they are not all the same.
Place the tracker upside down on the charging mat, with its magnetic side uppermost. Move it around the charging mat until the indicator light stays continuously lit, not flashing.
The length of time to charge depends on the degree of battery depletion, and on the battery's capacity.
While charging, the GPS and GPRS antennas are under the top surface ordinarily. Consequently they are almost disabled during charging, being in close proximity to the mat's charging coils. It is unlikely that it will receive sufficient satellite signal reception to function. Disregard location reports when inverted during charging.