If you believe the StenLight fact sheet at http://www.stenlight.com/fact-sheet.htm
then the CustomDuo inserts compare favorably to the StenLight S7, which estimates 140 lumens on the highest setting, and lasts for 2 hours with the fully charged StenLight (LG723) 2.3 AH 7.4V lithium ion battery. According to the CustomDuo web site, the CustomDUO modules are regulated to run at 350 mA and output 140 lumens for the XPG R5 LED. The web site claims that 4 AA batteries will power the light for about 6 hours on the high setting (350 mA). They suggest you use Sanyo Eneloop rechargeable AA batteries (2000 mAH per cell) rather than alkalines. It seems that the reason these Duo inserts are now available is that the Cree XPG LEDs are more efficient (thus generate less heat) than older LEDs. The Duo headlamp wasn't originally designed with a big heatsink in the lamp. The higher efficiency also means that it's reasonable to use the stock Duo battery packs and rechargeable NiMH batteries. Since I typically use a four "C"-cell belt pack (with 5000 mAh per rechargeable NiMH cell) for my Duo, in theory I could run one of these modules for about ten times that amount of time (around 60 hours) on the high (350 mA) setting. Still not as many lumens as my Scurion, but a worthy upgrade to my second light nonetheless, Diana * * * * * * * * * * * * * * * * * * * * * * * * * * * * Diana R. Tomchick Associate Professor University of Texas Southwestern Medical Center Department of Biochemistry 5323 Harry Hines Blvd. Rm. ND10.214B Dallas, TX 75390-8816, U.S.A. Email: [email protected] 214-645-6383 (phone) 214-645-6353 (fax) On Feb 8, 2011, at 11:16 AM, caverarch wrote: > Diana, I see that it will even work for folks old enough to still have a > Halogen version of the Duo in their equipment stashes. I think I'll go for > it, though I have never set up a PayPal account. > > How do you think it would compare with a Sten? > > Roger Moore > Houston > > > > -----Original Message----- > From: Diana Tomchick <[email protected]> > To: Cave Tex <[email protected]>; Metroplexcavers > <[email protected]> > Sent: Tue, Feb 8, 2011 10:48 am > Subject: [Texascavers] Custom Duo inserts > > This may be old news to those who religiously read the NSS Cave Forum ("Cave > Chat"), but there is an interesting new LED module being sold for the Petzl > Duo > 14- or 8-LED headlamps: > > > http://customduo.co.uk/customduo.aspx > > > These modules use Cree XPG LEDs (your choice of the R5 or R4), and you have a > choice of replacing just the side spot (the halogen bulb) or both the side > spot > and the original LED module. Lumen ratings range from 110 to 280 depending > upon > configuration. Prices range from 28 to 44 English pounds ($45 - 71), > international shipping is free (for now). Payment is via PayPal. > > This may be an inexpensive way to upgrade your old Petzl Duo headlamp into > something much brighter (and a lot sturdier and more waterproof) than many of > the Princeton Tec headlamps currently available (such as the notoriously > finicky > Apex). > > Diana > > * * * * * * * * * * * * * * * * * * * * * * * * * * * * > Diana R. Tomchick > Associate Professor > University of Texas Southwestern Medical Center > Department of Biochemistry > 5323 Harry Hines Blvd. > Rm. ND10.214B > Dallas, TX 75390-8816, U.S.A. > Email: > [email protected] > > 214-645-6383 (phone) > 214-645-6353 (fax) > > > > > ________________________________ > > UT Southwestern Medical Center > The future of medicine, today. > > --------------------------------------------------------------------- > Visit our website: > http://texascavers.com > > To unsubscribe, e-mail: > [email protected] > > For additional commands, e-mail: > [email protected] --------------------------------------------------------------------- Visit our website: http://texascavers.com To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
