Why not use one 16650 battery? Keeppower use Sanyo UR16650ZT cell with Japan IC
For well over a year, I've been happy with protected AW ICR 16340s and unprotected AW IMR 16340s.
Protected Soshine/Orbtronic 16340s...not so much so.
Chris
Hi,
What is the difference between the two battery types listed?
Will they fit the Fenix PD30?
Cheers.
For the PD30, I'd try if a 17670 (or 17650) battery fits, and how that works. The lower voltage of a single cell vs. 2x CR123A might be a problem, or not. :thinking: If okay, a single 17670 cell is surely a better option than 2 RCR123's in series.
Another option might be to bore out the battery tube until it takes an 18650 cell. Would be much, much better but again: the lower voltage might be an issue.
I have a SureFire 6P LED that a naked Panasonic NCR18650A cell won't come close to fitting in.
I bought two Redilast 17670s and they both fit fine and work fine. You can also look for the naked Sanyo 16650 cells, which is what's inside the Redilast 17670s, with added protection circuit.
I don't know about your other lights.
www.edcplus.com, which is Redilast, has them. Buy one and use that to see what your other lights can accept, so you're not spending a bunch of money upfront and flying blind.
Chris
Say again? PD30 takes 2x CR123A, right? Rechargeable version of those (16340) is nominal 16 mm. diameter, but CR123A's are 17 mm. diameter. So for a 2x CR123A light, a 17670 cell should fit (at least in theory ).Seeing as this light was designed for use with 16mm cells, (..)
Yes, LiFePO4 cells are 3.2V nominal (and they drop to that voltage real quick when discharged), which normally is close enough to CR123A's 3V. But LiFePO4 in 16340 format is hard to find, many of those are junk, the best you can get is ~500 mAh or so. And few chargers can handle these cells properly.Is there a RCR available that is equal to a primary's voltage after charging ?
1:1 voltage-alike replacements are only needed for incandescent lights. For LED lights, it depends on what voltage range the light was designed for. If a light takes up to ~4.2V (for a single-cell light) or up to ~8.4V (for a 2-cell light), then you can put RCR123's in them. And for lights designed to take 2x CR123A (up to ~6V), it's always safe to put in a single cell as replacement. Whether that works well or not, is another issue.I've always tried to stay away from the CR123's because there wasn't a good rechargeable.. Now their out there but the V's are too high.. WT*.....
Received the following response from Fenix China:
"We recommend customer to use 3V CR123A battery, the voltage of rechargeable CR123 has 3.7V and will reach 4.2V when getting fully charged, high voltage may will do harm to PD30 circuit."
Are there any rechargeable CR123A available which stay within the safe voltage limit quoted?
Cheers
If you will go for a 6 volt solution as in your primaries , you can probably also use 2 x RCR123 3.0 volt li-ions , or 2 x RCR123 Lifepo4 ( 3.2 volt ). Whether they will harm your light or not I can't garanty , but I think the risk is little.
Personally I would stay away from the RCR123 3.0 volt li-ions , they are usually not recomended.