Both the 100 watt and 250 watt models need to be sent to 2008 where they belong.
Hotwires were fun so long as you knew exactly what you were doing but putting one in the hands of a novice is a lawsuit waiting to happen these days.
I’m curious as to what voltage the charger tops the 250 Watter’s battery pack at.
The 64657 likes to instaflash before 28.5 volts on a rested pack.
Found out the hard way back in my hotwire phase.
Still have a few for lighting bonfires and cigars.
This light has been around for a decade, surprised you only heard about it now…
Even when it came out 12 years ago it wasn’t the world’s brightest flashlight.
The claim is 12,000 lumens at 320W (at full charge), which would be 37.5 lm/W. Pushing the temperature up has a significant benefit for efficiency, and a huge detriment to bulb life, which they only advertise as 100 hours.
Osram specifies the performance as 9000 lumens at 250W. I’d expect Osram to report accurately, and that’s 36 lm/W. Rated bulb life is only 300 hours.
It presumably loses some output over time as the filament evaporates, increasing the resistance, and the tungsten redeposits on the glass darkening it.
You can get a hint of how efficiency scales with temperature from the ratings of household incandescents:
Standard incandescent A19: 800 lumens / 60 W at 2700K = 13.3 lm/W
Halogen replacement A19: 750 lumens / 43 W at 3000K = 17.5 lm/W
Halogen lamps pull huge amounts of current at start up (when cold) and that decreases as they warm up to operating temperature. And they get really hot at 250 watts, hotter than LEDs even. 12k lumens though? I’d like to see it to believe it.
Basically this is a barely useable fun device for impressing people and melting holes in your clothes and maybe burning down your house.