ROP 2D Runtime?

[jugg2]

What kind of runtime can I expect from a 6XAA ROP High? I will probably run Eneloops in it.

 

[mr.squatch]

Eneloops ftw on a 6 pack for a 2d rop. I love mine. Mine gets too hot to leave on, but I know if I turn it off to cool down every 10 mins or so it runs a little over an hour on a charge. It's one of my favorite lights


g

 

[Brozneo]

An ROP High on 6 x AA's will last ~ 20-30mins.... An ROP Low on the same set up will last ~ 1 hour

 

[jugg2]

Thanks guys, thats longer than I thought it would be!

 

[FlashSpyJ]

I have a ROP 2D, I run 6 X AA titaniums in it, currently running the High bulb. I thought that I had about 15-20min runtime on high tops. I dont think i get 30min with high bulb, the output drops rather rappedly. I probably get more than 15 min of high output, but i sure dont get that high output for very long...

Havent tried the low bulb yet. Have to take a hike in the woods and try it out better.

Someone dont happen to have a runtime chart?

 

[WildChild]

Do you make your batteries rest for some time after charging before using them again? I just got my kit today! (2 FM 6AA to 2D adapters, FM MOP dual-purpose reflector and bulbs kit) I have a set of Eneloop and a set of Duracell Pre-Charged (believed to be rebadged Eneloop).

 

[eebowler]

WildChild, with the 6AA set up, you don't need to let the cells rest.

 

[WildChild]

WildChild, with the 6AA set up, you don't need to let the cells rest.

Thanks! I love this light!

 

[divine]

I have a ROP 2D, I run 6 X AA titaniums in it, currently running the High bulb. I thought that I had about 15-20min runtime on high tops. I dont think i get 30min with high bulb, the output drops rather rappedly. I probably get more than 15 min of high output, but i sure dont get that high output for very long...

Havent tried the low bulb yet. Have to take a hike in the woods and try it out better.

Someone dont happen to have a runtime chart?

You're not using rechargeable batteries in your ROP?

 

[VF1Jskull1]

i should try my eneloops to check for runtime cause my 2D ROP Low goes yellow in 10 to 15 minutes using energizer 2650 mAh NiMh rechargables...

 

[WildChild]

i should try my eneloops to check for runtime cause my 2D ROP Low goes yellow in 10 to 15 minutes using energizer 2650 mAh NiMh rechargables...

Maybe your batteries are bad or your adapter(s) has a too high resistance. FiveMega adapter?

 

[WildChild]

I just tried my ROP HI with 2 3toD adapters (KaiDomain style) and 6AA Duracell 2650 mAh. The light went from bright and white (FM adapter) to dim and yellow! I didn't thought the difference would be that big!

 

[FlashSpyJ]

You're not using rechargeable batteries in your ROP?

yes, I use Titanium NiMH AA.
After the second recharge of the batterys one of them leaked! I have heard that they tend to leak. But the reason I bought them was because they could deliver high current faster, so I could run the high bulb better. I personally dont have any experiences with HiMH batts more than a little with theese, so I wouldnt know which brand I would choose to replace theese with.

 

[WildChild]

yes, I use Titanium NiMH AA.
After the second recharge of the batterys one of them leaked! I have heard that they tend to leak. But the reason I bought them was because they could deliver high current faster, so I could run the high bulb better. I personally dont have any experiences with HiMH batts more than a little with theese, so I wouldnt know which brand I would choose to replace theese with.

Eneloop and Duracell Pre-Charged seems to have the same performance in the ROP I made yesterday!

I have a question. What bulb life I can expect from ROP-HI and ROP-LO bulb on 6 AA NiMH?

Thanks

 

[ElectronGuru]

For my first ROP, I used a 8AA->2D from the sandwich shoppe. I played with alkalines and lithiums, but the bulbs went without 2 dummy cells. Then I tried Eneloops, first 6, then 7, then 8 full cells. No poofing, just brilliant solid output from the Low and High bulbs.

I havnt had it long enough to recommend it, but 25% more cells should equal 25% more run time. And 8 eneloops gave more output than 6 of anything else. Throw in a new lens and MOP reflector and you've got FL heaven.

 

[RoyJ]

I havnt had it long enough to recommend it, but 25% more cells should equal 25% more run time.

Definitely not.

You're adding cells in series, which does not change the effective capacity of the cells. You're simply driving the bulb harder - i.e. using up as much energy as you're adding in.

If anything, an 8AA ROP would run shorter than a 6AA setup, because you're driving the bulb harder and therefore the current will be slightly higher (wattage will be significantly higher due to higher voltage).

I'm really surprised that 8 cells didn't turn the ROP bulbs into camera flash-bulbs, though...

 

[FlashSpyJ]

Dont want to steal your thread, but how long runtime would 2 X 18650 batt provide?

 

[WildChild]

Dont want to steal your thread, but how long runtime would 2 X 18650 batt provide?

My guess is approximately the same as 6AA NiMH (Eneloop). Maybe a little more.

 

[RoyJ]

Dont want to steal your thread, but how long runtime would 2 X 18650 batt provide?

Again, since we're talking about the same bulb, you can directly compare battery capacities.

So, if the 18650s are 2200 mah then it should be very similar to 2200 mah ni-mhs.

 

[ElectronGuru]

Definitely not.

I'm really surprised that 8 cells didn't turn the ROP bulbs into camera flash-bulbs, though...

Thanks for the info. The particulars of series engineering don't seem to want to stick!

Yes, I'm VERY surprised that 8 Eneloops don't 8 cells pushing Low ROP, High ROP, no poof. But even 7 of anything else and no more bulb.