9P with 17670's?

[Zenster]

I've seen some references to this but nothing yet that answers my specific question:

My 6P with Malkoff M60 is one of my favorite "bright" lights, but that M60 eats batteries.

So I'm looking for someone with the same light who uses (or tried) a 9P body with two 17670 rechargeable LiIons.

The voltage of two 17670's is in the perfect range for the M60 drop-in, and at a capacity of 1800mah, it should get even more runtime than primaries (which run around 1500mah).
And of course, being able to recharge makes the light "free" to run.

My specific question is: can you simply drop two 17670's into a 9P body with no modification or shimming in order for them to fit correctly and work correctly?

 

[Upplyst]

As the 9 p takes 3 cr123 batteries, it would be more suited for two 17500's.
The 17500 is as long as one and a half cr123.

 

[SureAddicted]

I've seen some references to this but nothing yet that answers my specific question:

My 6P with Malkoff M60 is one of my favorite "bright" lights, but that M60 eats batteries.

So I'm looking for someone with the same light who uses (or tried) a 9P body with two 17670 rechargeable LiIons.

The voltage of two 17670's is in the perfect range for the M60 drop-in, and at a capacity of 1800mah, it should get even more runtime than primaries (which run around 1500mah).
And of course, being able to recharge makes the light "free" to run.

My specific question is: can you simply drop two 17670's into a 9P body with no modification or shimming in order for them to fit correctly and work correctly?

You would need a cell extender, A19 or a detonator to use with your 9P & 17670's.

 

[roymail]

You would need a cell extender, A19 or a detonator to use with your 9P & 17670's.

But, 2 x 17500's will work well with no extender.

 

[Zenster]

I thank you all for some direction, but I'm still not there.

According to notes I've found elsewhere, there's some more difficulty.
First, the 17500's may be the perfect length to replace 3 CR123's, but the Lighthound site says that they are actually wider than CR123's, so will they still fit a standard 9P tube?
If so, they could work, but the 17500's are also a little less in capacity than CR123 primaries.

So perhaps adding the hassle of an extender with the 9P to use 17670's may be the way to go.

I'd like to hear from any of you who have actually done both and get your comments based on your actual experience.

 

[Marduke]

I thank you all for some direction, but I'm still not there.

According to notes I've found elsewhere, there's some more difficulty.
First, the 17500's may be the perfect length to replace 3 CR123's, but the Lighthound site says that they are actually wider than CR123's, so will they still fit a standard 9P tube?
If so, they could work, but the 17500's are also a little less in capacity than CR123 primaries.

So perhaps adding the hassle of an extender with the 9P to use 17670's may be the way to go.

I'd like to hear from any of you who have actually done both and get your comments based on your actual experience.

SF tubes generally fit 17xxx cells. The capacity of a 17500 might be lower than a CR123, but the voltage is higher. Two 17500's should give about the same runtime as three CR123 primaries IIRC

 

[roymail]

Options using an M60.

1. buy an A19 extender for your 6P and use 2 x 17500's.

2. buy a 9P body (B/S/T), an A19 extender and use 2 x 17670's.

3. buy a Leef C body 2 x 18650 and use your 6P bezel and tailcap. This would be the best long runtime option.

 

[gswitter]

If you're OK with the length of 2x17670, a better option is one of fivemega's or Leef's 2x18650 tubes Use your current bezel, M60 and tailcap and you're good to go. Both fivemega and Leef have 2x18500 tubes available as well. The quality of these tubes is excellent, and both designs are decent matches to the stock Surefire 6P/9P tubes.

 

[Omega Man]

I use a C3 with Surefire A19, and 2x 17670s. I've never had a problem with them fitting.

 

[habibi]

I also use the 9P with A 19 and two 17670 from AW! No Problem with fitting and the lengh of the light is o.k. for me! A great combo....

Cheers from Germany

 

[Fizz753]

I thank you all for some direction, but I'm still not there.

According to notes I've found elsewhere, there's some more difficulty.
First, the 17500's may be the perfect length to replace 3 CR123's, but the Lighthound site says that they are actually wider than CR123's, so will they still fit a standard 9P tube?
If so, they could work, but the 17500's are also a little less in capacity than CR123 primaries.

So perhaps adding the hassle of an extender with the 9P to use 17670's may be the way to go.

I'd like to hear from any of you who have actually done both and get your comments based on your actual experience.

As some have already noted, in reply to the bold part above, 17500's work just fine in a 9p. Thats what I have in my stock 9p at the moment.

 

[c0t0d0s0]

Options using an M60.

1. buy an A19 extender for your 6P and use 2 x 17500's.

2. buy a 9P body (B/S/T), an A19 extender and use 2 x 17670's.

3. buy a Leef C body 2 x 18650 and use your 6P bezel and tailcap. This would be the best long runtime option.

4. Bore the body for 2x18500. This would provide the best lumen/size ratio with a P91 LA.

 

[davedds]

4. Bore the body for 2x18500. This would provide the best lumen/size ratio with a P91 LA.

I thought it was not recommend to use the p91 due to "high current" draw from the Li-Ion batteries if not used in short bursts??? P90 at the most in the incan world....I may be wrong but thats what I read somewhere on cpf....

 

[ElectronGuru]

I'd like to hear from any of you who have actually done both and get your comments based on your actual experience.

CR123's are 16mm. 16mm cells rattle in a shaken 9P. 17500's fit perfectly in an unmodified P6 without rattling.

I'm so happy with my M60 + 9P + 17500 setup, I sold the 6P I started with.

The only 17500's you want are AW's
http://www.lighthound.com/index.asp?PageAction=VIEWPROD&ProdID=1299

Two of these have roughly the same total energy as 3 CR123's. But primaries can drain completely/safely. AWs have protection that stops them from draining as far. You're safer, but get less total run time. Compared to 2 CR123's however (ie a 6P), you're still better off.

Important note: the M60 handles 2 or 3 primaries, and 2 lithium-ions. Three lithium-ions (ie 3 rcr123's) have two many volts and should not be used in a 9P.

 

[txgp17]

I have 3 9P's and a C3, along with 4 M60's.

The 9P/M60 combo works great on AW protected 17500's. The only bad part is you get no warning before the light goes dark. You should get a little over an hour's runtime, but I haven't tested it yet.

I also tried the M60 in a 6P with two RCR123a's. I got about 40 minutes of runtime with that setup.

 

[roymail]

The 9P/M60 combo works great on AW protected 17500's. The only bad part is you get no warning before the light goes dark. You should get a little over an hour's runtime, but I haven't tested it yet. I also tried the M60 in a 6P with two RCR123a's. I got about 40 minutes of runtime with that setup.

So regardless, there are limitations to every setup. Just choose one that best suits your needs.

The 9P/M60/2x17500's is a good practical rechargeable setup that works well for lots of folks. But, if you want longer runtime, use higher capacity cells like 18650's with a Leef body.

 

[Zenster]

Options using an M60.

1. buy an A19 extender for your 6P and use 2 x 17500's.

2. buy a 9P body (B/S/T), an A19 extender and use 2 x 17670's.

3. buy a Leef C body 2 x 18650 and use your 6P bezel and tailcap. This would be the best long runtime option.

You guys have all given great advice, and I think roymail's simple "choice" menu sort of puts together my options.

So let me get this straight:
I'm starting with a 9P body, so it seems I have mainly two best ways to go.

1. 9P w/M60 (got 'em) plus A19 (about $25) plus a double set of 17650's (4 so I have a charged standby pair all the time... I'd have to buy them because I have none) would give me a "smidgeon" more runtime than primaries in a 6P body, BUT, I'd get the rechargeablity that I want. That would run me a total of an additional approx. $70.00.

2. 6P Head and tail switch w/M60 (got 'em) plus a Leef 2 x 18650 (at about $75 shipped and taxed), and with several 18650's (already have and am using them) would give me noticeably more runtime than with 17650's using 18650's that I already have, plus the rechargeablitly I want, and that would run me a total of $75.

It looks like #2 is my personal best option, I so I guess I'll have a 9P black body up for sale.
If I had already been using 17650's in other lights and had some already, just adding the A19 to the 9P body would have been a great way to go. But with a dozen or so 18650's already in rotation in other lights, and with their higher capacity, I'm sort of forced into what's really my best option for the situation.

Thanks all, and I hope this thread helps others to figure out more good ways to use the ubiquitous 6P/9P form factor.

 

[Marduke]

You guys have all given great advice, and I think roymail's simple "choice" menu sort of puts together my options.

So let me get this straight:
I'm starting with a 9P body, so it seems I have mainly two best ways to go.

1. 9P w/M60 (got 'em) plus A19 (about $25) plus a double set of 17650's (4 so I have a charged standby pair all the time... I'd have to buy them because I have none) would give me a "smidgeon" more runtime than primaries in a 6P body, BUT, I'd get the rechargeablity that I want. That would run me a total of an additional approx. $70.00.

2. 6P Head and tail switch w/M60 (got 'em) plus a Leef 2 x 18650 (at about $75 shipped and taxed), and with several 18650's (already have and am using them) would give me noticeably more runtime than with 17650's using 18650's that I already have, plus the rechargeablitly I want, and that would run me a total of $75.

It looks like #2 is my personal best option, I so I guess I'll have a 9P black body up for sale.
If I had already been using 17650's in other lights and had some already, just adding the A19 to the 9P body would have been a great way to go. But with a dozen or so 18650's already in rotation in other lights, and with their higher capacity, I'm sort of forced into what's really my best option for the situation.

Thanks all, and I hope this thread helps others to figure out more good ways to use the ubiquitous 6P/9P form factor.

You forgot option #3, using 17500's in your 9P without the A19. Total additional investment as little as $20 for a set of 4.

But then again it depends on how much you can get for a 9P body to offset the initial cost of option #2. Options #2 and #3 could end up being close to the same cost in the end.

 

[generic808]

I run both set-up's, a 9P with 2x17500's and a 9P + A19 with 2x17670's. Since you're going to be using rechargeables, the runtime really won't matter too much. As long as you pop them on the charger once in a while and have a fresh set ready to go. I personlly like the 2x17500 set-up a little more because the length is perfect for me.