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Does PowerLogic ION7550/7650 meter has Internal battery and what happen of suspend auxillary supply power)?

Yes. PowerLogic ION7550/7650 meter has Internal battery, it is a lithium battery of rated voltage 3.3 Volts. In the absence of auxillary power to the meter this battery is responsible for maintaining the meter s real time clock and providing a backup power to the non-volatile memory. Regarding the life of the battery (Please see the attachment), if the meter is powered continuously, the battery should last 20 years or more. If the meter is not powered, the battery will last a minimum of 7 years at room temperature.
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