How select a lamp and battery

[sml2010]

Hi

I am not a electronic engineer , i don't know about electronic much so i am sorry if i ask a very general question. I know answer to general questions are difficult.

I need a light source (LED lamp) with 500 lumens. we can have one or more LED lamp to get this Lumens.

So i need a lithium ion battery for this light source. the battery must have below properties:
1- dimension be below : 6.5" * 6.5* *1*
2- 8 hour capacity to hold turn on our light source
3- portable
4- rechargeable

I am wait for your help.

Thank you

 

[pradeep.g.belchada]

led needs a constant current driver. in your project you not mentioned the led current and voltage atleast you have to give some inputs. search your local area market for the leds you need get the voltage and current ratings and post here

i think you need this for the head lamp

 

[sml2010]

thanks for your reply.

The battery can charge with a USB charger.