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X728
,A:No, the RTC function runs on the 18650 batteries. It will "lose" time if you remove the batteries.
Q11: What will lead to the X728 board be burnt out?
A: Please make sure the polarity of battery is "+" to "+" and "-" to "-" and match with the "+" "-" mark on battery holder. The battery protection chip IC will be over-current, heat and then burnt if one or two of the batteries are connected reversely. PS: the X728 board will not be burnt immediately if one or two of the batteries are connected reversely.
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