Fireflies ROT66 Flashlight

973 posts / 0 new
Last post
SKV89
Offline
Last seen: 5 hours 53 min ago
Joined: 12/10/2017 - 12:46
Posts: 3188
Location: US

I just received my black XP-L HI 3A blemished one at a discount from Fireflies. If it wasn’t stated that way, I wouldn’t even notice any blemish at all. My initial lumen measurements were 5,431 lumens at 1s on freshly charged VTC5D. However, like my other ROT66 that were making low lumen output, putting a spacer between the tail cap and battery cage increases contact pressure between the battery cage and the head, which increased lumen output to 6,940 lumens!

I suggest everyone use spacers (e.g., folded napkins, rubber bands, etc.) and remeasure your lumen output. Two of my ROT66 had this issue with not enough compression at the contact point causing low output. The compression force relies on the resistance of the rubber in the tailcap pushing up on the battery cage. However, over time, the rubber gets permanently deformed and loses its elasticity so there’s less rebound pressure pushing up against the cage. For those people that leave the battery cage tightened in the flashlight for a period of time, retest your lumen output. I’m pretty sure it is a good amount lower than when it was brand new.

I like the tint on the XP-L HI 3A alot. It is about 5200k, a very clean NW/CW and when compared next to 219B 4500k doesn’t look green at all unlike many other flashlights. However when shined on actual objects and not just white walls, the 219b 9080 still does a far superior job at color rendering. The XP-L HI runs cooler though.

Newlumen
Newlumen's picture
Offline
Last seen: 1 day 5 hours ago
Joined: 05/27/2017 - 00:19
Posts: 2087
Location: United states

I have my three rot66 stand by for 5 days after fully charged..

Rot66 aux mode ( med ). 4.17 v

Rot66 aux mode ( med ). 4.14v

Rot66 aux mode ( high). 4.17 v

Sorry to hear some of you people have a high drain stand by..

twisted raven
Offline
Last seen: 1 hour 37 min ago
Joined: 03/13/2016 - 11:10
Posts: 476
Location: texas

You can change the brightness on the aux leds? How do you do it?

Newlumen
Newlumen's picture
Offline
Last seen: 1 day 5 hours ago
Joined: 05/27/2017 - 00:19
Posts: 2087
Location: United states
twisted raven wrote:
You can change the brightness on the aux leds? How do you do it?

I borrow the light from skylumen. Ask him.

ToyKeeper
ToyKeeper's picture
Offline
Last seen: 23 min 59 sec ago
Joined: 01/12/2013 - 14:40
Posts: 10005
Location: (469219) 2016 HO3
twisted raven wrote:
You can change the brightness on the aux leds? How do you do it?

With a screwdriver.

There are Phillips-head potentiometers on the aux LED board.

ToyKeeper
ToyKeeper's picture
Offline
Last seen: 23 min 59 sec ago
Joined: 01/12/2013 - 14:40
Posts: 10005
Location: (469219) 2016 HO3
Newlumen wrote:
Sorry to hear some of you people have a high drain stand by..

Someone had it drain three full cells in a few hours. Whatever was wrong, it wasn’t any regular sort of standby drain. It’s probably a short of some sort.

aginthelaw
aginthelaw's picture
Offline
Last seen: 4 hours 20 min ago
Joined: 09/30/2014 - 21:31
Posts: 832
Location: noo joisey

after further testing, the batteries are fine after 7 days in the light. after the voltage dipped below 4.0v it dropped like a rock and red leds came on. the batteries were at 3.16v

never fear shadows…it means a light shines nearby

Newlumen
Newlumen's picture
Offline
Last seen: 1 day 5 hours ago
Joined: 05/27/2017 - 00:19
Posts: 2087
Location: United states

I have my three rot66 stand by for 9 days after fully charged..

Rot66 aux mode ( med ). 4.16 v

Rot66 aux mode ( med ). 4.13v

Rot66 aux mode ( high). 4.15v

ToyKeeper
ToyKeeper's picture
Offline
Last seen: 23 min 59 sec ago
Joined: 01/12/2013 - 14:40
Posts: 10005
Location: (469219) 2016 HO3

The ROT66 standby drain should be between ~0.03 mA and ~0.70 mA, depending on the exact model and configuration of the light. At worst, it should take at least a year and a half to drain three 3000 mAh cells.

So… if something drained them in under a week, there’s something else wrong.

leaftye
Offline
Last seen: 3 weeks 1 day ago
Joined: 07/25/2012 - 17:43
Posts: 4258
Location: San Diego, CA

Out of the box, are the aux led’s bright enough to walk around a dark room with? What if the potentiometer is cranked up?

The low mode should be lower.

Reviews: Efan IMR18350 700mAh 10.5A, <a href="http://

Flashaholics
Flashaholics's picture
Offline
Last seen: 21 hours 44 min ago
Joined: 04/05/2017 - 12:46
Posts: 710
Location: Wakefield
leaftye wrote:
Out of the box, are the aux led’s bright enough to walk around a dark room with? What if the potentiometer is cranked up?

No, but they are on the D4S

My 4K Lumen Whore Reviews (MS18, X70, MS12, DX80, X80-GT, X45vn etc) - https://www.youtube.com/c/FLASHAHOLICS_GB

freeme
freeme's picture
Offline
Last seen: 2 hours 13 min ago
Joined: 11/14/2013 - 22:00
Posts: 7967

I will get FF to look into it.

aginthelaw wrote:
So I got the light back that I had the auxiliary board put in and placed batteries in it charged to 4.19v. I returned from work 3 hours later and the red LEDs had kicked in. They were now at 3v each. I charged them overnight back to 4.19v and turned the light onto the moonlight setting at 5 this morning, took my wife to the hospital for tests, took her to breakfast back to the hospital then home almost exactly 4 hours later and tested the batteries. They’re at 4.1v

©freemex1thedeals.com

d_t_a
Offline
Last seen: 6 hours 51 min ago
Joined: 08/04/2017 - 23:58
Posts: 1464
Location: Manila, Philippines
leaftye wrote:
Out of the box, are the aux led’s bright enough to walk around a dark room with? What if the potentiometer is cranked up?

My ROT66 didn’t have Aux-LEDs, but my D4S has. When the D4S aux-LEDs are configured to “High” mode, they’re nearly as bright as the main light on the lowest “Moon” mode (maybe 1 lumen or a bit less)? Certainly enough to walk around a dark room with.

I wonder how the ROT66’s Aux-LEDs look like (does it also have a Low and a High mode?)

ToyKeeper
ToyKeeper's picture
Offline
Last seen: 23 min 59 sec ago
Joined: 01/12/2013 - 14:40
Posts: 10005
Location: (469219) 2016 HO3

d_t_a wrote:
When the D4S aux-LEDs are configured to “High” mode, they’re nearly as bright as the main light on the lowest “Moon” mode (maybe 1 lumen or a bit less)? Certainly enough to walk around a dark room with.

I wonder how the ROT66’s Aux-LEDs look like (does it also have a Low and a High mode?)

The D4S aux LEDs go from about 30 uA to 1000 uA, on low and high. This is controlled by the firmware.

The ROT66 aux LEDs go from about 200 uA to 600 uA, ish. This is controlled by a screwdriver.

i42dk
i42dk's picture
Offline
Last seen: 16 hours 47 min ago
Joined: 08/30/2017 - 05:35
Posts: 193
Location: Denmark

Ordered one “glued”, as it was going to be a gift.

SST20 4000K

All emitters come on when the light is cold. as soon as it heats up one emitter shuts off. And then another one starts giving up. So after a few seconds on turbo, two emitters are off.

FF definitely need to step up their QC game Tired

So this has turned into a test of the FF 3-year-warranty/customer support.
Sent them a mail three days ago, no response yet.

nokoff
nokoff's picture
Offline
Last seen: 5 days 7 hours ago
Joined: 12/12/2013 - 20:26
Posts: 342
Location: East Coast USA

PM him on here. I had a cosmetic issue with one of mine and Jack went out of his way to do anything he could and there was nothing he wasn’t willing to do. This was just recently.
I’m sure he just overlooked your email with all that’s going on.

does that only happen on turbo? Like normal ramping it’s fine? Always the same two?

Nokoff..still Made in China 山寨主義

aginthelaw
aginthelaw's picture
Offline
Last seen: 4 hours 20 min ago
Joined: 09/30/2014 - 21:31
Posts: 832
Location: noo joisey

He’s sending me a battery carrier to see if it fixes my battery drain problem. No charge. No hesitation.

never fear shadows…it means a light shines nearby

i42dk
i42dk's picture
Offline
Last seen: 16 hours 47 min ago
Joined: 08/30/2017 - 05:35
Posts: 193
Location: Denmark
nokoff wrote:
does that only happen on turbo? Like normal ramping it’s fine? Always the same two?

Always the same two.

Happens with regular ramping at lower levels also. As soon as the MCPCB heats up, they start failing

i42dk
i42dk's picture
Offline
Last seen: 16 hours 47 min ago
Joined: 08/30/2017 - 05:35
Posts: 193
Location: Denmark

FWIW I just got a PM regarding my post Thumbs Up

Newlumen
Newlumen's picture
Offline
Last seen: 1 day 5 hours ago
Joined: 05/27/2017 - 00:19
Posts: 2087
Location: United states

I just got my rot66 xpl hi 5000k.. i bought the one with the scratch to save some money.. the scratch is just on the bezel. i cant believe sony vtc5a give 1000 more lumen than samsung 30q.

Sony vtc5a 7300 lumen
Samsung 30q 6000 lumen

JasonWW
JasonWW's picture
Offline
Last seen: 19 min 3 sec ago
Joined: 10/22/2016 - 11:41
Posts: 11824
Location: Houston Texas

Newlumen wrote:
i cant believe sony vtc5a give 1000 more lumen than samsung 30q.

Sony vtc5a 7300 lumen
Samsung 30q 6000 lumen


The 30Q is a nice mix of high capacity and still high current. Capacity and current is always a trade-off. If you don’t mind less capacity, you can get higher currents. For example, the Sony VTC4 2100mah can deliver even higher currents than the VTC5A at around 30A continous. So you just choose what’s best for you.

Texas Ace Lumen Tube calibrated with Maukka lights

Click this to go to signature links.

onieanjal
Offline
Last seen: 5 months 3 weeks ago
Joined: 11/01/2018 - 01:15
Posts: 5

Hey guys,

Can the aux LED potentiometer be accessed on a glued ROT66? Or do you need the unglued version for access? Thanks.

Jay
Offline
Last seen: 2 months 3 weeks ago
Joined: 07/02/2018 - 19:33
Posts: 104
Location: California

onieanjal wrote:
Hey guys,

Can the aux LED potentiometer be accessed on a glued ROT66? Or do you need the unglued version for access? Thanks.

You would need the unglued version for access.

Dirt
Offline
Last seen: 2 weeks 6 days ago
Joined: 01/28/2016 - 23:17
Posts: 446

This is one cool light, just got my champagne sst20 scratch+dent. Tint is spot on at 4K. Ideal beam and tint for a Mtn bike light!

i42dk
i42dk's picture
Offline
Last seen: 16 hours 47 min ago
Joined: 08/30/2017 - 05:35
Posts: 193
Location: Denmark

Warranty update: FF are shipping a new head Thumbs Up

10/10 Customer service Beer

iamlucky13
Offline
Last seen: 5 hours 11 min ago
Joined: 06/22/2018 - 09:18
Posts: 603
Location: USA

I received my ROT66 today, black Nichia 219B option.

Normally, I’d say the 219C’s in my D4 look about as neutral as one can get. Compared to this ROT66, a hint of green tint shows up in the D4, while the ROT66 does lean ever so slightly pink.

I’m enjoying playing around with the many features of Anduril.

With as well this style light tail stands, I also decided not to wait before making a diffuser for it from a dead A19 bulb:

saypat
saypat's picture
Offline
Last seen: 1 hour 34 min ago
Joined: 07/13/2011 - 20:32
Posts: 3528
Location: Calif

very impressive Customer Service as I read….. speaks volumes

onieanjal
Offline
Last seen: 5 months 3 weeks ago
Joined: 11/01/2018 - 01:15
Posts: 5

Has anyone sourced a diffuser yet? I am looking for something with a pretty snug fit. Thanks!

d_t_a
Offline
Last seen: 6 hours 51 min ago
Joined: 08/04/2017 - 23:58
Posts: 1464
Location: Manila, Philippines
onieanjal wrote:
Has anyone sourced a diffuser yet? I am looking for something with a pretty snug fit. Thanks!

The diffuser Neal is selling for the GT Mini is a bit “loose” when used on the GT Mini, but it actually fits quite snugly when used on the ROT66 instead..

iamlucky13
Offline
Last seen: 5 hours 11 min ago
Joined: 06/22/2018 - 09:18
Posts: 603
Location: USA

onieanjal – Is my picture showing up for you, two posts above yours?

Cutting the diffuser from an LED light bulb down to rest on the ROT66’s head like I did should be pretty simple if you have a Dremel, hacksaw, or other means of cutting plastic.

Pages