Running lights off of car batteries?

[WhiteWidow9]

Anybody done it? I'm looking at getting a ride-in-place stand for a bicycle and hooking up a battery charging kit to it. I'd like to run two HPS lights, but I don't know the limitations of the car battery or how long it would last between charging. Someone has to have tried this.

 

[DrOfDank]

Anybody done it? I'm looking at getting a ride-in-place stand for a bicycle and hooking up a battery charging kit to it. I'd like to run two HPS lights, but I don't know the limitations of the car battery or how long it would last between charging. Someone has to have tried this.

Why?

 

[Tweaktion]

this seems like big headache, lots of cash / you being needed to power it.

 

[WhiteWidow9]

Really? The bicycle kit would be nice in case of a blackout, but if I have access to a bunch of high quality car batteries for free, and I can recharge them for free, why the f@#$ would I want to pay the extra $40-$50 per month PER 1000W light?

 

[Tweaktion]

car battery to 1000watt hps / mh = idk the power transfer method you'd use.
but at 9 amps and the battery being like 70 amp hours? might be changing 2 battery's a day.
could run a smaller light set in a small box.