3.0v rechargeables (incl. Markcm's new cells)

Thanks Tajji,
1 hour runtime is amazing. I guess I'll eat the RCR123s and get the 17500s. I assume you have to do the triple tap to get them lit? Thanks again for the reply.
Tim

I use Markcm's protected 17500's (2) for my P90 LA. Do not have to double tap them.

Hour runtime, no triple clicky....this is like Xmas all over again. I'm ordering tomorrow. No more primary lithiums for me

I just got the 3.0V 600mAh CR123 batteries from AW and when I took them off the charger the measured 4.01V, much to my surprise. Also to my surprise they didn't power up my 2C Magmod using 3 primary CR123A Batteries.

Anyone have any experience with these?

CroMAGnet said:

I just got the 3.0V 600mAh CR123 batteries from AW and when I took them off the charger the measured 4.01V, much to my surprise. Also to my surprise they didn't power up my 2C Magmod using 3 primary CR123A Batteries.

Anyone have any experience with these?

Click to expand...

I would suspect the voltage is fine even at 4v, if these are similar in design to my cells, the IC that regulates is not active without current flow and I have seen static readings from 3.7 to 4 volts on my IC reduced cells. Can you tell if these have an internal IC circuit, on mine you can see the negative end of the cell has a circuit and a conductor band running up the cell under the shrink wrap. To test the working voltage of your cell, place a 1k resistor across the battery while you measure it, this will kick in the PCB.

With regards to why these are not working in your light, first off check some standard cells to make sure the bulb didn't pop on you. My best guess is that your application is high current and the short circuit protection of the cell is activating preventing the cells from lighting your torch, this is some times curred with a series of quick switch clicks. On some models a quick series of switch clicks will briefly light the bulb before the IC shuts off the battery, theory being the bulb will warm up just enough to increase resistance, drop the current flow below the IC's threshold and stay on contiuously.

Hope that info is useful

-Markcm
www.e-lectronics.net

Very Useful, thanks Mark. I will have to look at the batteries when I get home.

I tried two CR123 in the high current magmod along with a dummy CR123. I did a series of quick switch clicks and the 1499 bulb would only glow a tiny bit with each click. Then I tried all three CR123 batteries and no dummy cell. I got the same results but the tiny glow with each click was a lot brighter before fading off.

I'll try them in a bunch of other LEDs late this evening to try and figure it out. I had hoped they would run this Magmod though :shrug: It's goes through three primary CR123 batteries in a half hour or so.

I am curious. I have a SF E2e. From what I have gathered here and on the e-lectronics website, these 3.0V regulated 123's will light the MN02 (25lumen) lamp but not the MN03 (60 lumen) lamp which is standard on the light. Why is this? Both lamps are designed for 6V. Does it have to do with bulb resistance or current draw?

Thanks

CWB

To Mark for charger and some cells.
I tell you it is a sickness!!!!
jc

captianworkbench said:

I am curious. I have a SF E2e. From what I have gathered here and on the e-lectronics website, these 3.0V regulated 123's will light the MN02 (25lumen) lamp but not the MN03 (60 lumen) lamp which is standard on the light. Why is this? Both lamps are designed for 6V. Does it have to do with bulb resistance or current draw?

Thanks

CWB

Click to expand...

I can speculate:

I only have one customer who has reported back regarding the MN03 bulb so the classification of non compatible may be a little loose; I just do my best to report what CPF'rs share with me. It was actually reported to blow the MN03 bulb.

I would guess that a higher light output in the MN03 is related to less resistance than the MN03, if the MN02 were borderline with accepting the voltage from these RCR123 3.0ic cells then the MN03 would pop.

Consider that a primary CR123 is 3.0 before loaded and about 2.8v when loaded, and my regulated cells are around 3.2 volts and hold that for sometime before dropping to a nominal 3.0.

Most low resistance/ high output bulbs will cause the cell the go into over current protection mode rather than blow a bulb and this is the one and only case that has been reported to me of blowing a bulb.

If anyone else has experimented with the MN03 or knows more about the bulb and why it may not be compatible with these cells please comment.

-Mark
www.e-lectronics.net

I have been following this thread since it started and just read the last several posts. Firstly, if CroMAGnet is only getting about 30 minutes out of primaries in his light, that tells me that it is pulling somewhere around 3 amps. I don't think the 3.0 volt IC batteries will supply that much current. Looking around the forums at the use of these and other 3.0 volt IC batteries, it seems with multiple tapping etc. you might (maybe, sorta) get them to work at 2 amps but, not much more.

As far as the MN02/MN03 questions, it seems to me that this is the same curent draw problem. I think Markcms speculation would appear to be the correct explanation. When you're playing on the edge in these situations, there are three possible outcomes. It works, it won't light (overloading the IC), or, the bulb will pop (over voltage to the bulb).

Just my 2 cents. I have several types of Mark's Li-Ion batteries but, I don't try to run any of them "on the edge" so, haven't had any problems.

Just a plug for Markcm, fast shipment and good email correspondence! :rock:

Dave

AW came out with a single protected 14670 ( 1000mAh ) 3.7V LiIon battery that fits in the L2 for $10, and seems to give the same lumen output (high and low settings both work normally) as two of the 123a's, based on my practical testing.

I have been using it for a month without any problem. Just add his nipple magnet to the + terminal so it makes contact with the inside contact.

I also offer a 14650 / 14670 protected cell, although the model number is 14650 the actual size is 14670. I think you will find my prices very favorable as well. I don't have any compatibility data on these although I suppose that's a good thing as no one has informed me of incompatibilities.

check them out at www.e-lectronics.net

-Markcm

Markcm said:

I also offer a 14650 / 14670 protected cell, although the model number is 14650 the actual size is 14670. I think you will find my prices very favorable as well. I don't have any compatibility data on these although I suppose that's a good thing as no one as informed me of incompatibilities.

check em out at www.e-lectronics.net

-Markcm

Click to expand...

That is a nice price on those....but you didn't put down the size measurements of your various batteries which I think is important (especially for fitting inside of the L2) to verify before buying. What do those charge up to?

It looks like these other AW 14670's are 8mm x 37mm & with the + terminal nipple magnet makes it the same length as two of the 123a's (each 9mm x 19mm)

LuxLuthor said:

That is a nice price on those....but you didn't put down the size measurements of your various batteries which I think is important (especially for fitting inside of the L2) to verify before buying. What do those charge up to?

It looks like these other AW 14670's are 8mm x 37mm & with the + terminal nipple magnet makes it the same length as two of the 123a's (each 9mm x 19mm)

Click to expand...

Good comment, I am currently working on updating the product pages to your request. I am adding cell size based on actual measurement at largest points taken from a random sampling of cells and also including a link to more complete specification .PDF files

New stock is due the first week of April

-Markcm
www.e-lectronics.net