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The Halonix Prime 12W B22 LED Bulb includes a lithium-ion battery that charges quickly within a few hours. ... Notably, this bulb is rechargeable and does not require a separate charging process.
The 12W LED bulb uses 12 kWh of electricity every 1,000 hours. At the rate of $0.11 per kWh, it would cost $1.32 to operate the LED bulb for 1,000 hours.
Philips has just unveiled what it's calling the "world's first LED replacement for most common household bulb," taking aim at the aging, inefficient 60W gizmo that's been lighting our homes since ...