We are still using the logger LGR-5325 (139758), with quite good results. But now after several months without using it, we experienced the following problem:
Even though the logger is set up to measure, and the lights of acquisition are properly blinking, the SD card there is no recording. In addition to that when we try to synchronize the time clock of the logger against the computer clock, the setting is not kept in the logger (when we turn it off and on again the date is completely different).
I presume that both problems are related and probably caused by the internal battery failure (without enough charge to create new recording files and to keep the proper date). Is that an option?