ASF shows the Keeppower 5200 mAh batteries as 71 mm long. In another thread reviewing the Convoy L6 here:
http://www.candlepowerforums.com/vb/showthread.php?419516-Review-Convoy-L6-(XHP-70-2x26650) he categorically states that you must use 70 mm batteries. So, where's the best place to buy 26650 protected 5200 mAh batteries 70 mm in length or less.
I do not know of any US sources of these cells. You have two options, order the correct cells on Banggood or order lower capacity 4500 mAh cells and get them faster.
Also, at the ASF site, there is an option for either N4 1A 6500K or N2 3A 5000k. Which do I want and why? I want as bright as possible.
I would go with the 5000k. Why? A neutral tint is a more pleasing tint. Colors will look better and there won't be as much eye strain from the blue 6500k light scattering everywhere. Although the N4 6500k is a higher bin so it will output 10% more lumens which is a negligible amount and you would likely prefer it to be imperceptibly darker but a much more pleasing beam
Lastly, Options/Ultralux Package: Boost Driver ($35) and/or De-Dome Emitter ($35), $65 for both. Yes/No/Why?
Boost driver=more lumens. Dedome emitter=decrease spill and increase throw this is a personal preference. I would go with a domed emitter as it is better general purpose beam
Thanks for letting me ask newbie questions.
Ask away