Lighting Project

Hey guys! I have recently been in the market for a high-lumen light for some hunting/camping trips that i frequently go on. I was looking for something in the 500 lumen range and all i could find were extremely pricey flashlights. So i decided to build my own. I found a 1040 lumen LED chip from mouser.com that looked pretty good, but when i hook it up it doesn't seem nearly as bright as some low lumen flashlights that i have owned in the past. Can you guys give me some tips on what i should do to max the output of the chip? The chip runs on 40volts and around 270mA if i remember correctly. Since space is also an issue i'm having a hard time finding a 40volt battery that i can carry around since lugging around several car batteries in series doesn't seem to be an option
I understand that purchasing a flashlight would be much easier, but where's the fun in that?
Thanks in advance for the help.

i see no circuit nor part numbers of LEDs and Chip you use

At this point i simply have several 9 volt batteries in series to turn it on. The end product needs to be in a pretty compact package with a really bright output.
Here is said LED chip:

https://www.mouser.com/ProductDetai...=D3QG1iK7Fqgf6Ce94dqfGEBWhXEJiGwOzBsdNcSQq/o=

9V batteries simply can't handle this current. at 11W this is considerable load. I'd look into LED driver.
also if this is supposed to be high brightness flash-light replacement, i'd rather look for device that is not wide beam.

A torch gets its bright light from a focus of all the light coming off the radius of the globe.
You don't get this multiplying effect from a LED.
Just use a simple 1,000,000 candlepower globe.