Ive been using my 2-mode neutral tint tower in a E1E, with McTC as my edc, and decided to do a runtime test, with the current battery im using. Solarforce 880mah rcr123(white). (i will be ordering a bunch of better li-ion soon, wrapped in black)
Mine is from the latest run i believe, driven at 1 amp.
I cant measure its lumens, but from ceiling bounce tests, its brighter than my quark AA2 neutral XPG, also brighter than my Jet lll M Q3(neutral). running off a fully charged 18650. although i perfer the Q3 tint. the tint on kuku's tower is prefered over the quark neutral xpg, but not by much.
I decided to do the test in 10 minute intervals on high, flashlight was kung-fu grippped in my fist most of the time for heatsinking. the results as follow, which was a pleasant surprise.
cell charged to 4.17v. measured from my craftsman DMM. also, waited 5 minutes for cool off period before turning back on for the 10 minute test.
after 10 minutes, measured at 3.87v
another 10 min. measured at 3.678v
another 10 min. measured at 3.565v
another 10 min. measured at 3.45v
another 9 min. measured at 3.25v then flickering started to warn of low battery power.
tested voltage 5 minutes later, and was at 3.31v. ran it on high again, and lasted close to 3 minutes before low power warning flickering.
note: the voltage reading are not very accurate, as i did not always time the measurement during cool off period. I noticed, the voltage would increase by the 100th as i am measuring it. most likely due to less heat.
so, in short i got 49 minutes on high. of course, its high mode was not as bright on a fullly charged cell. but the difference from low was very noticable.