D cell
- Thread starter kilgor
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donn_
Flashaholic
AccuPower Evolution D cells are relatively high capacity and low self discharge cells.
http://thomasdistributing.com/shop/...html?SP_id=&osCsid=es6q3qu1840snckft8krqrt6s7
http://thomasdistributing.com/shop/...html?SP_id=&osCsid=es6q3qu1840snckft8krqrt6s7
For storage in a trunk for "years without use", your only real option is to go with lithium primary (Lithium-Iron Disulfide) cells in AA to D adapters. The trunk of a car is a pretty harsh environment for electrochemical cells. Alkalines will be more likely to leak than lithium cells. Low self-discharge NiMH cells will lose charge fairly rapidly at temps over 75 F, so they're pretty much useless for long term car storage also.
Marduke
Flashaholic
+1
Lithium primary is really the only solution for long term storage, especially in warm/cold seasonal conditions.
radellaf
Flashlight Enthusiast
There are emergency/camping D cells that you might consider. I think they were at REI or Great Outdoor Provision Company.
The catch is that you have to pull a tab or something to "activate" them, and once done, you can't store them for a long time any more. They were also rather expensive I believe. ($5/10 ea)
The catch is that you have to pull a tab or something to "activate" them, and once done, you can't store them for a long time any more. They were also rather expensive I believe. ($5/10 ea)
Mr_Light
Enlightened
You can put 2 AA Lithium Primaries (in parallel) in each of these adapters.
http://www.dealextreme.com/details.dx/sku.3228
Soshine AA to D-Size Battery Convertor Case $1.70
I think this will be the closest to a D Lithium Primary you will find.
http://www.dealextreme.com/details.dx/sku.3228
Soshine AA to D-Size Battery Convertor Case $1.70
I think this will be the closest to a D Lithium Primary you will find.
That's a good suggestion. Does anyone know where I could buy a carrier like the Rolls Royce carrier below?
Mr_Light
Enlightened
I suspect that is a series battery holder 10.8 volts on NiMH. Is this for a different application?
Sub_Umbra
Flashlight Enthusiast
You may be able to use:
SAFT Brand LS33600 Lithium D Cell
It would depend on how many cells your M/\G D uses. Since the SAFT cell is 3.6V (16,500 mAH) you'ld need to use a dummy cell(s) to make it work. SAFT cells are pricey ($25-30 ea) and they store enough energy that any mistake made in voltage calculations could be...spectacular.
On the positive side, they should offer all of the advantages of other lithium cells where storage and performance are concerned.
I would probably just buy a cr123 light for the car.
SAFT Brand LS33600 Lithium D Cell
It would depend on how many cells your M/\G D uses. Since the SAFT cell is 3.6V (16,500 mAH) you'ld need to use a dummy cell(s) to make it work. SAFT cells are pricey ($25-30 ea) and they store enough energy that any mistake made in voltage calculations could be...spectacular.
On the positive side, they should offer all of the advantages of other lithium cells where storage and performance are concerned.
I would probably just buy a cr123 light for the car.
donn_
Flashaholic
That's a good suggestion. Does anyone know where I could buy a carrier like the Rolls Royce carrier below?
That's a FiveMega carrier. They're offered on the B/S/T forum right now.
:twothumbs Thanks! Here's a link to the fivemega carriers for anyone else reading this thread.
http://www.candlepowerforums.com/vb/showthread.php?t=182370
http://www.candlepowerforums.com/vb/showthread.php?t=182370
BVH
Flashaholic
The FM 9AA to 3D adapters listed on this page are serial and will pop your lamp unless you've changed out the lamp with something that will withstand 12+ initial Volts. I don't remember if FM makes these adapters in parallel. The "9AA to 3D" verbiage refers to a size conversion - 9 AA cells size to 3 D cells size, not a voltage conversion. Voltage has been increased 3 times. Hopefully, I'm being clear.
I was planning to use it with a Terralux Seoul P4. Will it work?
TerraLUX TLE-6EX MiniStar5 SSC P4 U bin LED upgrade for 4-6 C/D cell Maglites
jayflash
Flashlight Enthusiast
Keep in mind that adapters with many contacts offer multiple places for humidity and pollution to do their dirty work and foul the electrical paths. If you aren't able to take the time for any cleaning that may be necessary then, perhaps, an alternate solution is better.
Caig Pro Gold, applied to the contact surfaces, may help for a trunk storage environment.
Caig Pro Gold, applied to the contact surfaces, may help for a trunk storage environment.
BVH
Flashaholic
Kilgor, I don't know the max input Voltage of the TerraLux drop-in you've listed. With 9 fresh charged Nimh batts in that FM adapter and only a small current draw from the LED, it should be rated to withstand initial Voltages of around 12.9. You could, of course, install some AA dummies in the adapter in place of some of the batts to reduce the Voltage to the LED's acceptable upper limit.
BVH
Flashaholic
Ahhh, now that I have some knowledge of. I have just that light and it is great for the use you're looking for. It's even intrinsically safe/explosion proof. Get the single Lux version, not the multiple LED. Big difference.
Probably the best bet, you'd spend more money making the Mag reliable than buying a simple CR123 light.
The incan Mags do tend to go for a long time though, just at 1/4 their original brightness. From my own experience though, you'll want to lock out the tailcap before storing it in your boot.
Also, in my case, to stop passengers playing with it in the back seat.
Big_Ed
Flashlight Enthusiast
I gained even more respect for the 4D Mag. I had one on the floor of my '56 Oldsmobile for quite a while. Back in August we had a terrible flood, and the car was submerged for 3 days or so. (unfortunately the car was totalled) When I was cleaning out the car, I came across the Mag, and it came to life like nothing happened, just a bit dirty on the outside. I also had another 4D Mag in the garage that was submerged from the tailcap to the switch, and it worked too! I have yet to clean them out, and they currently are in my storage unit, and as of last week, they still worked just fine. I'll always make sure I have at least one Mag in each of my vehicles, in addition to some of the newer LED lights.
Sorry to hijack this thread!
Sorry to hijack this thread!
I think this thread has gone a bit astray with what I would personally consider "solutions" that are a bit complex.
Rather than talking about technology of batteries, let's just talk strategy.
My strategy for lights stored in my truck or car is simple. I put fresh Alkalines in them every Christmas. Period. That's it.
Never leaked, never went dead, always worked when needed.
Fresh Alkalines will store very well, even in hot and/or cold environments, for probably a couple of years or longer. But why push your luck? There is NO type of battery that you can rely on to serve as emergency backup if left in storage for "years", as mentioned.
By using an annual significant memory jogger date (I've always liked Christmas
), just go through all your battery operated stuff that isn't used much and put in fresh batteries.
It's a simple strategy that isn't wasteful at all because what you then do is use the year-old but good batteries in other devices that you use more often and use up the batteries in those devices.
Ooh, that reminds me; I gotta' go and get some fresh Alkalines. Christmas is almost here :wave:
Rather than talking about technology of batteries, let's just talk strategy.
My strategy for lights stored in my truck or car is simple. I put fresh Alkalines in them every Christmas. Period. That's it.
Never leaked, never went dead, always worked when needed.
Fresh Alkalines will store very well, even in hot and/or cold environments, for probably a couple of years or longer. But why push your luck? There is NO type of battery that you can rely on to serve as emergency backup if left in storage for "years", as mentioned.
By using an annual significant memory jogger date (I've always liked Christmas
), just go through all your battery operated stuff that isn't used much and put in fresh batteries.It's a simple strategy that isn't wasteful at all because what you then do is use the year-old but good batteries in other devices that you use more often and use up the batteries in those devices.
Ooh, that reminds me; I gotta' go and get some fresh Alkalines. Christmas is almost here :wave:
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