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SIM808 losses time after power off!!!

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zacpapac04

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Hi all,

I have a strange problem with the SIM808 about the timing. More specifically it seems that the SIM808 RTC module losses many minutes when the module is power off.
I had tested with 12-hour power off and after the power on the SIM808 gave me the time with 30min elapsed from the real time!!!!

I repeated the tests with more than one SIM808 modules and moreover with 2 different versions the S2-10606-Z1F01 and S2-1060C-Z1F03.

The battery for RTC was 2032 type.

In the past I had worked with father of SIM808 the SIM908 and I had no problem with the RTC time (has about 1 and some second elapsed from Real Time for 4 month power off).

Do you have faced any problem with RTC timing of SIM808?
Any suggestions,

Thanks,
 

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