Upgrading surefire G2 NITROLON

[Erzengel]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

I'm afraid, the M60 will be too hot for the G2. Do You need the throwy beam of the M60? If no, i recommend using a M61L, it will be much cooler. The biggest electronic between the M60 and M61 is, that the M60 drops out of regulation at 3.8V and therefore it won't be regulated on a single cell. The M61 stays in regulation until the voltage drops below 3.4V, so it will also work regulated with a single cell (maybe not with 16340s in the strong versions).
To sum it up: If You need the throwy beam of the M60, get a metal host and use it with two good protected 16340 cells. If You prefer the floodier general purpose beam of the XP-G in the M61, sell Your M60 and get a M61. It will run on a single cell. If You want to run a Malkoff in a G2 (with the metal bezel), get a lower output drop in.

 

[Quest4fire]

!0 hours is outstanding! More than enough time for a good day's wrenching. I would still try something like this though. That way you still have both hands free to work, your light doesn't get greasy from handling and you don't have to brush your teeth with Gojo.

 

[Kestrel]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

I am trying to find something that will work good with my light. I now know the ultrafire 16340's do not work.

What would be my best bet to get full power out of the M60 and will fit in a G2? I have heard some 18650's will not fit the G2 body, but they will slowly dim until dead opposed to the 17670's just cutting off after about an hour or so.

Full brightness is desired with a runtime of at least an hour.

Hello Bauer,

I have merged your thread with a currently-running thread that overlaps your topic pretty well (i.e. LiIon cell types for the SF G2's).
There is a lot of good info in this thread that may be of assistance.

Best regards,

 

[Yoda4561]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

Bauer, there are no 18650's in existence that will fit a G2's battery tube. Even some 17670's can be tight.

 

[Erzengel]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

I run my G2L with a M61 and a protected Sanyo 16650 cell. This is a very nice combination, the 16650 have ca. 40% more capacity than the 17670 cells.

 

[Yoda4561]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

Those new 16650's sound nice. Glad to hear they're updating something smaller than the 18mm cells. Whenever my 17670's start dying I'm glad there's going to be something better out.

 

[surgicalshot]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

Does a 17670 work with the incandescent bulb of a g2? I have good led lights I like the color if the incan I carry two lights and one is led that I rotate and the other incan g2.

 

[Norm]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

The battery Voltage will be too low using a 17670, 17670 3.8V 2 X CR123 = 6V.

 

[surgicalshot]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

So are there any rechargable options for me

 

[Yoda4561]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

It will light up but the voltage is way too low, it'll be a dim orange and the halogen cycle won't work, shortening bulb life drastically. If you want to continue using an incan bulb go with a surefire P90 and two 16340 IMR batteries or a lumens factory 3.7v P60 using a 17670 or one of the newer 16650 batteries .

 

[surgicalshot]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

Won't the 16340's be to high voltage?

 

[cland72]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

So are there any rechargable options for me

Try sourcing a high CRI LED drop in - I'd recommend a Malkoff M61L or M61LL 219. You can run them on primaries or rechargeables so long as you're within the operating voltage specs.

 

[cland72]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

Won't the 16340's be to high voltage?

Not if you run them with a P90 lamp.

They will blow the stock P60.

 

[surgicalshot]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

Not if you run them with a P90 lamp.

They will blow the stock P60.

Ok I looked up the p90 and that is a 9volt lamp intended for three primary 123's. So if I get that lamp and use the two 3.7 volt rechargeables that lamp will run at full power?

 

[cland72]

Re: 18650 , 17670 or rcr123 for G2 w/ M60

Ok I looked up the p90 and that is a 9volt lamp intended for three primary 123's. So if I get that lamp and use the two 3.7 volt rechargeables that lamp will run at full power?

Correct. You won't get very long runtime on two 16340's, but it will work just fine.

 

[ElectronGuru]

Just note that G3 (native G for P90s), come with Pyrex lenses. The plastic lens on the G2 may not like the higher heat levels.

 

[surgicalshot]

Just note that G3 (native G for P90s), come with Pyrex lenses. The plastic lens on the G2 may not like the higher heat levels.

Yes I have already ordered a solarforce head. Next question I was reading about the 16340's and there are some charger issues I have a nitecore intellie charger it should charge them fine right? And what I kind of run times should I expect? Just ball park times are ok

 

[ElectronGuru]

Runtime won't be pretty. CRs have amazing capacity, on the order of 3x rechargeables of the same size. Then your boosting amp draw quite a bit. I would expect a runtime loss of as much as two thirds.

 

[cland72]

And what I kind of run times should I expect? Just ball park times are ok

My guess? 20 minutes

750ma cells, with (I'm assuming) a 2A draw from the P90, means you will get less than a half hour.

 

[azglocker]

upgrade an old g2

Hey guys, long time lurker and finally a registered member. I have a old 80 lumen surefire g2 and I'd love to hear what you guys think are some good upgrades for it. I would prefer to stay under $60 and I'm also buying some 18650 cells for my pro-tac 2L.

I would like a bit of a spot but it doesn't need to be extreme and I'd like to be around 100-150 lumen so it remains easy on batteries.

size isn't an issue, if the bezel extends for any reason that's fine. it's belt carried.

needing led/bezel only. Light is sporting a ultrafire clicky switch.