Thankyou CPF. You taught me to do math and saved me $70.00

[woodrow]

I know that many manufactures greatly inflate their lumans and runtime #s. Knowing this has not stopped me from buying several lights in the past and being dissapointed. Such examples include my old Inova t4 and several incans.

I have kind of wanted another incan spotlight, something that would run on regular alkaline batts. I saw the Pelican Laser Pro 4d spotlight for $70.00. It has two reflectors (for flood and spot) and a dual filament bulb and claims 125 lumans of output and a 10-12 hour runtime. I wanted one.

Then I remembered everything I read here, and checked old posts and Flashlight Reviews for comparisons. I looked at a Mag 4d runtime graph that showed that it dropped to 50% output in about an hour. It put out light for 11 hours, but verry dim light. I remembered that physics do not change. 2 3v cr123a's powering a xenon bulb will peak at about 60-70 lumans and die in about an hour. 4D batts only produce 6 volds and will have a rapid discharge curve with a long tail of limited light.

Thanks for helping me get past the excitment of buying a new light, to remember common sense and math. I just saved $70.00

 

[moontroll]

Take that $70 And build your own light,to do what you want.You'll only have to do it once.Research here on CPF to find it.INCAN------INCAN-----INCAN for power and throw,LED for run time,Its fun and rewarding at the same time.

 

[nerdgineer]

I've heard it suggested that when math is taught in schools, it should ALWAYS be taught to kids in the context of making money decisions to help the non-math inclined to connect all that work with real world payoffs.

 

[TORCH_BOY]

I found out that it always pays to check first