Lamping Battery Question

Jonty

Lads,

For the more mathematically minded of you.

I've a lampforce 170 (stock bulb 100W I think)and after getting a 12v 20ah Battery. How long will it last if the beam is left on??


Regards



Jonty

jimmyzx

12V divided by 100W and then multiplied by 20Ah = 2.4 Hours
by my reckoning. (I'm open to correction??)

I think the 170 comes with a 75W bulb as standard which gives you 3.2 Hours by the above calculation.

Hope this helps
Paul

clivej

Watts = Volts x Amps

therefore 100 watts / 12 volts = 8.33 amps

Battery = 20 amps/hour

therefore 20amps / 8.33 amps = 2.4 hours.

in a nutshell.

Get the dimmer and it will last longer....................................

4gun

anyone else use a double D cell mag light with an LED bulb (you get 100hrs )for shooting at less than 50 yds.picks out eye shine at over 200yds

clivej

I have a Surefire torch, like the swat teams use on the TV. OK for rabbits @50m on my 22lr when I get the chance to use it.

Looks similar to this-