The sunwayleds use AA batteries not AAA. There is a fair difference in size.
3AAA batteries do not have enough juice to drive the more powerful LEDs. This is a typical runtime graph. Starts out at 130 lumens, drops to 80 lumens and stays there.
Even if you put in a more powerful LED that can do 400 lumens, the light will drop to 80 lumens even quicker maybe 3 - 5 minutes instead of 25 minutes for the 'Kai 130 lumen'.
And if you are using alkaline AAAs the batteries won't even give you the output. Even alkaline Ds cannot properly power a P7/MCE.