A gas gauge circuit has a power supply pin, a power return pin, {HEAD ~ power} on {TAIL ~ reset capability}, and a communications signal pin 
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A gas gauge circuit has a power supply pin , a power return pin , { HEAD ~ power } on { TAIL ~ reset capability } , and a communications signal pin
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH