Lights: Emergency

: A P-channel MOSFET or a relay to automatically switch the LED "on" when AC power fails. Quick "Life Hack" Versions

If you want to build a basic battery-powered lamp that turns on when the power goes out, you can assemble a simple circuit. Essential Components : High-brightness 1W or 3W LEDs. Power Source : A 3.7V Li-ion cell (like an ) or a 12V lead-acid battery. Charging Module : A TP4056 controller Go to product viewer dialog for this item. emergency lights

Lights installed for a business or public building must meet specific safety codes: : A P-channel MOSFET or a relay to

for Li-ion batteries to keep them charged while the main power is on. Power Source : A 3

: Always install an inline fuse within six inches of the battery to protect the circuit from shorts.