New P3D and want to use w/ RCR123a's. Any issues

socalrunner · Jun 1, 2007

I just bought a p3d and I am going to use as a helmet bike light.. I need to know reliability of using RCR123a's for long periods of time in this manner..

I am looking at the Tenergy 900mah rcr123a's on ebay.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330108837724

Can I use high and turbo modes with no issues for 3-4 hour stretches with no problems. I will carry an extra sets of batteries for longer rides..

Any input would be greatly appreciated..

BUZ · Jun 1, 2007

socalrunner said:
I just bought a p3d and I am going to use as a helmet bike light.. I need to know reliability of using RCR123a's for long periods of time in this manner..

I am looking at the Tenergy 900mah rcr123a's on ebay.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330108837724

Can I use high and turbo modes with no issues for 3-4 hour stretches with no problems. I will carry an extra sets of batteries for longer rides..

Any input would be greatly appreciated..

I purchased some of the tenergy 900mAh cells and I don't think they are anywhere near 900mAh!!! Would go with AW or battery station cells.

http://www.lighthound.com/index.asp?PageAction=VIEWPROD&ProdID=2190

griff · Jun 1, 2007

check out FF for complete info

socalrunner · Jun 1, 2007

what is FF?

nanotech17 · Jun 1, 2007

socalrunner said:
what is FF?

me too

barkingmad · Jun 1, 2007

Why not just use 3.0v RCR123's - they should probably be fine?

socalrunner · Jun 1, 2007

that is what I was planning on using.. Just wanted to make sure all modes work and there is no problems using for longer run times..

XlumensX · Jun 1, 2007

Hi socalrunner,

I tried to use the UF protected CR123A battery or unprotected battery for more than two hours without problem.

socalrunner · Jun 1, 2007

I think I am going to get the Ultrafire charger from Lighthound and 4 of the 3v and 2 of the 3.6v protected cells and see what works best..

socalrunner · Jun 1, 2007

XlumensX said:
Hi socalrunner,

I tried to use the UF protected CR123A battery or unprotected battery for more than two hours without problem.

Is the 2 hour burn time in high mode?

Ogg Vorbis · Jun 1, 2007

I think i heard somewhere that the P3D will run ok on R123... i'm not too sure about the long lasting effects though. The P2D however is supoosed to loose the low and medium levels of output wen using R123's but i think they become available again towards the end of the battery's charge.

I'm also curious about this issue as i plan to get a P3D or P2D in the near future.

barkingmad · Jun 1, 2007

But using 3.0v R-CR123A's would probably be best as it's almost the same as primary CR123A's so enable all modes.

Would imagine using 3.6/3.7v R-CR123A's would just end up overdriving the LED (reducing it's life) and / or generating more heat.

bondr006 · Jun 1, 2007

I haven't tried the rcr123a's yet, but when I ordered my P3D from David(4sevens) he said that they work fine in the P3D. He did not specify the 3.0 or 3.6/7 volt though. Call him or send an email. 404-935-4458 Monday through Friday between 8am and 5pm Eastern Standard Time.

Steve L · Jun 1, 2007

All modes work correctly with two 3.7v RCR123's, the circuit is a buck circuit with input voltages up to 8.4v.

bondr006 · Jun 1, 2007

Steve L said:
All modes work correctly with two 3.7v RCR123's, the circuit is a buck circuit with input voltages up to 8.4v.

I can confirm that. I just got off the phone with David and he said it is best to use the 3.7v RCR123a's.

Phaserburn · Jun 1, 2007

Chevro has posted runtimes of the P3D using R123 cells.

LA OZ · Jun 1, 2007

My experience is this:

1. two freshly recharged RCR123 is about 4.21V each works in all modes.
2. if one cell is defective and drops it voltage rapidly while in use, the P3D will not change mode as expected and often started in the medium mode.

T4R06 · Jun 1, 2007

2 x AW's protected high current R123 will last over an hour on turbo mode.

Frank Maddix · Jun 1, 2007

barkingmad said:
Why not just use 3.0v RCR123's - they should probably be fine?

They don't fit. They are just too fat. 17670's do fit though (tape wrapped), with or without magnets.

oracle2 · Jun 1, 2007

I have 4 RCR123A bought from AW NONE fit my p3d

New P3D and want to use w/ RCR123a's. Any issues

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