HID burn times?

[apples]

Reading posts and people say you might get 40mins or 50mins from a battery and HID.

Is this 100% brightness for the whole time or does it fade like a normal un-regulated light?

 

[XeRay]

Reading posts and people say you might get 40mins or 50mins from a battery and HID.

Is this 100% brightness for the whole time or does it fade like a normal un-regulated light?

Most HID (if any quality) are regulated, full output until failure. Suddenly shut down.

 

[deo71]

My observations are that lower than 9,2V some kits start to flicker which is dangerous for the ballast and must be stopped at once.

 

[Roursch]

My observations are that lower than 9,2V some kits start to flicker which is dangerous for the ballast and must be stopped at once.

Soon as my protected li-ion pack gets down to 9V she shuts off & no problems at all for ballast. thats one option

 

[TEEJ]

It really depends on the light, and the batteries.

Some are not regulated, and do dim as they drain....some maintain brightness and then just flip off.

If they have swappable battery packs (Ryobi, etc...) then the run time is less of a concern, as you can rotate charged cells in as needed.

MOST of the HIDS have run times closer to 20-30 minutes btw....but, again, the run time is a function of the wattage and the cell capacities, etc....and is highly variable.

The ones with lead acid batteries vs li-ion for example will make a large difference, as will choices as to form factor vs mah, etc.

 

[Colonel Sanders]

I once ran my FF3 for over 1:15 continuously using 3400 cells.

 

[BVH]

Was a significant amount of that time in 24 watt mode? Pack Watt hours are 50.32 and input consumption is approx 48 Watts. In a high draw environment, full capacity won't be realized due to Peukerts Factor.

 

[Colonel Sanders]

"Was a significant amount of that time in 24 watt mode?"

Yes. I ran it continuously while lighting a project for my wife and had no way of preventing the kick down to 24w. Still, this little light makes a LOT of light for a long long time considering it's size.

3400 cells were used, FWIW.