mdocod
Flashaholic
I've been playing with this combo for a few days now, and all I can say is WOW. What a wonderful lamp and great batteries.
AWs R123s (protected) seem to come off the charger at 4.18V (ultrafire 2 channel charger) every time.
The LF HO-9 draws 1.55amps when the cells are fresh, this is after letting the current settle down for a few seconds. This is right on the borderline for safety with these cells (1.5 is technically the maximum safe discharge rate, 3% more shouldn't make it or break it)
I wanted to know how much runtime I would actually have with this setup, and if it would be enough to want to use this setup as a day-to-day tool.
I decided to do this in 5 minute intervals with rests. I don't want to overheat the cells or melt the flashlight or anything. (doing tests in a brinkman maxfire.
at start: 4.18V open circuit, 1.55A
5 minutes: 3.90V open circuit, 1.50A
batteries slightly warm(not hot at all), some noticeable dimming after the first few minutes, but still good bright and whitish. Lamp is hot.
10 minutes: 3.81V open circuit, 1.50A
again, slightly warm batteries(not hot), not much dimming in this interval (things seem to level off here).. Lamp VERY hot, going to give it a longer break this time...
15 minutes: 3.70V open circuit, 1.47A
20 minutes: 3.63V open circuit, 1.45A
you start to notice more dimming in this region, light is becoming orangy rather than white. still plenty bright for most uses though.
23 minutes, 48 seconds: shutdown, open circuit ~3.2V after shutdown. was able to squeeze out a last current test at 1.36A. gets noticeably dimmer and orange in these last few minutes.
The cells performed pretty good at this load (2C). nearly 600mah capacity till shutdown.
I wasn't expecting this to last over 20 minutes, I was hoping for better than 15, so I'm happy!
hope this is useful to someone interested in this setup!
AWs R123s (protected) seem to come off the charger at 4.18V (ultrafire 2 channel charger) every time.
The LF HO-9 draws 1.55amps when the cells are fresh, this is after letting the current settle down for a few seconds. This is right on the borderline for safety with these cells (1.5 is technically the maximum safe discharge rate, 3% more shouldn't make it or break it)
I wanted to know how much runtime I would actually have with this setup, and if it would be enough to want to use this setup as a day-to-day tool.
I decided to do this in 5 minute intervals with rests. I don't want to overheat the cells or melt the flashlight or anything. (doing tests in a brinkman maxfire.
at start: 4.18V open circuit, 1.55A
5 minutes: 3.90V open circuit, 1.50A
batteries slightly warm(not hot at all), some noticeable dimming after the first few minutes, but still good bright and whitish. Lamp is hot.
10 minutes: 3.81V open circuit, 1.50A
again, slightly warm batteries(not hot), not much dimming in this interval (things seem to level off here).. Lamp VERY hot, going to give it a longer break this time...
15 minutes: 3.70V open circuit, 1.47A
20 minutes: 3.63V open circuit, 1.45A
you start to notice more dimming in this region, light is becoming orangy rather than white. still plenty bright for most uses though.
23 minutes, 48 seconds: shutdown, open circuit ~3.2V after shutdown. was able to squeeze out a last current test at 1.36A. gets noticeably dimmer and orange in these last few minutes.
The cells performed pretty good at this load (2C). nearly 600mah capacity till shutdown.
I wasn't expecting this to last over 20 minutes, I was hoping for better than 15, so I'm happy!
hope this is useful to someone interested in this setup!