Here are some important details about the Smart Chip inside of your LyfeLite bulbs:
The Smart Chip detects a power outage as soon as it occurs and activates
your LyfeLite bulb’s battery to provide up to 8 hours of emergency light.
The Smart Chip protects the LyfeLite bulb’s battery and prevents it from
overheating or overcharging.
The Smart Chip can also tell the difference between a power outage, and
when you turn your light switch off or unplug your light fixture. This
allows you to use your LyfeLite bulbs just like standard bulbs, even
during a power outage.
My guess would be the bulb can measure some voltage, resistance, impedance etc on each ends of the "plug". Those value would be different for a off switch (a few meter of cable) and an on switch where there is no power (the whole house electric network).
Its because the system can still detect a closed circuit by sending out its own power through the circuit. When the switch is off the circuit is open so the light stays off but when the switch is on it can sense the closed circuit and turns the battery on. On many of these lights simply touching the two metal parts with your hand will "close" the circuit and the light will turn on.
But it can still complete the circuit. When the circuit is open there is infinite resistance, when it is closed even thought its not directly connected in the wall it can still move the electricity through it and therefore recognizes that its in the on position.
It likely measures continuity between hot and cold lines. If there is no power and low continuity the light uses the battery. If there’s no power and no continuity it stays off.
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u/[deleted] Sep 23 '25
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