LED's; Not sure about the driver information and maximum power output.....how does this work?

[cernobila]

I have seen plenty of LED lamp modules for my P60/P6 D26 lights but just want to understand these differences;
One lamp has 800 lumens output at 2.7-4.5V, so far so good but what about 1600mA driver, maximum current output at 1600mA.
Another lamp has 850lumens output at 3.6-13V, with 2000mA driver, maximum current output at 2000mA.
Another lamp 1000 lumens output at 3-9V, with 2200mA driver, maximum current output at 2200mA.
Other lamps that come with higher lumen output have quoted 4000mA and even higher.

All of these could be run by one 18650 battery, so how do the 1600, 2000, 2200mA drivers, etc affect the run time on the same capacity battery?
If it does, why aren't the drivers all low if they give out similar lumens.
I am presuming that the 800 lumen 1600mA lamp will run much longer than the 1000 lumen 2200mA lamp on the same capacity battery.
Does the driver play a far more important role than we realize?

So, If I am after a single battery (3.7-4.2V) light and happy with 800-1000 lumens, should I look for the lowest mA driver for longer run time?

Any thoughts would be appreciated, thank you.

 

[cernobila]

I have seen plenty of LED lamp modules for my P60/P6 D26 lights but just want to understand these differences;
One lamp has 800 lumens output at 2.7-4.5V, so far so good but what about 1600mA driver, maximum current output at 1600mA.
Another lamp has 850lumens output at 3.6-13V, with 2000mA driver, maximum current output at 2000mA.
Another lamp 1000 lumens output at 3-9V, with 2200mA driver, maximum current output at 2200mA.
Other lamps that come with higher lumen output have quoted 4000mA and even higher.

All of these could be run by one 18650 battery, so how do the 1600, 2000, 2200mA drivers, etc affect the run time on the same capacity battery?
If it does, why aren't the drivers all low if they give out similar lumens.
I am presuming that the 800 lumen 1600mA lamp will run much longer than the 1000 lumen 2200mA lamp on the same capacity battery.
Does the driver play a far more important role than we realize?

So, If I am after a single battery (3.7-4.2V) light and happy with 800-1000 lumens, should I look for the lowest mA driver for longer run time?

Any thoughts would be appreciated, thank you.

I am surprised that there has been no response to my question. Perhaps it's a silly question, but I am still none the wiser.