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#4625054 - 01/05/18 02:54 PM Surefire Flashlights - Battery Drain in Storage?
2016Accord Offline


Registered: 01/19/16
Posts: 72
Loc: Texas
I have two Surefire Fury PX2 flashlights (15/200 older style that looks like this:

that seem to drain batteries, even when NOT used.

Each flashlight uses 2 CR123A batteries.
The odd thing is that I never really use them, but they seem to drain batteries. I have them stashed around the house for emergencies and check them every 60-90 days and find that the batteries are ALWAYS dead, or near dead. This is true for both flashlights. I am using new Surefire brand batteries. This is with NO use.

I can't believe that this is normal.
What the heck?!

I have been keeping the "base" screwed in, so that the button on the rear of the flashlight can function without having to be screwed in first.
My cheap Duracell LED flashlights are outperforming these expensive Surefire lights in terms of "storage". [censored]?!

I am tired of buying expensive CR123A batteries for unused flashlights. Any thoughts?
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#4625076 - 01/05/18 03:12 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: 2016Accord]
CT8 Offline


Registered: 10/09/14
Posts: 10925
Loc: Idaho
Once the batteries start they die on their own once put in service. My Surefire does the same thing as well as my hearing aid batteries they last the same in use and die even when I remove them when not is use.
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#4625083 - 01/05/18 03:16 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: 2016Accord]
Quattro Pete Offline


Registered: 10/30/02
Posts: 35838
Loc: Great Lakes
Some flashlights are known for excessive parasitic current drain when not running.

In general, I avoid any flashlight or battery with the word "fire" in it, although Surefire is US-based, so it should probably be en exception to this rule. smile

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#4625090 - 01/05/18 03:25 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: Quattro Pete]
2016Accord Offline


Registered: 01/19/16
Posts: 72
Loc: Texas
Originally Posted By: Quattro Pete

In general, I avoid any flashlight or battery with the word "fire" in it, although Surefire is US-based, so it should probably be en exception to this rule. smile

LOL!
They were a gift a some years ago.
They are "expensive" flashlights, so I hate to throw them away or not use them. They also have a nice form factor. I do wish that the high-output setting was activated by the first press of the button on the rear. That would make them more useful as home defense lights.

Of course having a charge in the battery helps too!
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#4625101 - 01/05/18 03:38 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: 2016Accord]
raytseng Offline


Registered: 12/11/08
Posts: 2333
Loc: CA
the reason there are so many chinese flashlight companies with fire in their name is because of surefire.

it is like saying i wont own a Ferrari because of fiat or fiero.

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#4625102 - 01/05/18 03:38 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: 2016Accord]
RW1 Offline


Registered: 03/19/10
Posts: 224
Loc: JBLM, WA
Give Surefire a call. I have owned Surefire flashlights since the early 1990s and their customer service is pretty darn good.

The only time I have seen this type of battery issues is when the lights were stored in a hot location or the batteries were old to begin with.

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#4625109 - 01/05/18 03:48 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: 2016Accord]
raytseng Offline


Registered: 12/11/08
Posts: 2333
Loc: CA
It is good practice for flashlights in storage to remove batteries. All companies surefire or otherwise will say dont store.
Especially surefire is tailored for tactical so its expected that you are loading fresh batteries before each mission and tossing the partially used ones.
They also only officially recommend their batteries so thats a bit of a racket.
I personally use rechargeables so if partially used I can top off and don't just toss the partially used ones.

For storage you can untwist the tailcap and/or tube so the connection is physically disconnected and just connected by a thread. If the button doesn't turn on the light then the batteries won't drain.


Edited by raytseng (01/05/18 03:53 PM)

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#4625165 - 01/05/18 04:42 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: 2016Accord]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Quit buying CR123's and use a single rechargeable 18650 instead.
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#4625193 - 01/05/18 05:00 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: 2016Accord]
Kawiguy454 Offline


Registered: 06/01/15
Posts: 578
Loc: Arizona
Get a flashlight that takes standard cells and use Eneloop rechargeable battery. They can be stored for couple years before needing charge.

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#4625223 - 01/05/18 05:33 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: 2016Accord]
Warstud Offline


Registered: 09/02/05
Posts: 5390
Loc: MIchigan

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#4625328 - 01/05/18 07:31 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: Warstud]
Balrog006 Offline


Registered: 08/09/16
Posts: 465
Loc: West Michigan


Seems to be an anomaly with the two pack, the 10 and 12 pack have very good reviews.

Surefire 12 pack
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#4625390 - 01/05/18 08:39 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: 2016Accord]
Popsy Offline


Registered: 05/10/15
Posts: 893
Loc: Frogland / Brittany
If you have the single stage tailcap tactical switch (press for momentary on, press further for constant on), then batteries are physically disconnected from the circuit board when the tailcap isnít activated.

So rule out tailcap issue (clean everything thoroughly inside, check that the inside switch can go back to off position freely (sometimes the rubber is a little tight and pushes slightly the switch underneath). Better, call surefire to get a replacement tailcap for free.

With all that checked, remaining option is battery issue. CR123A of good quality (US or Japan made, green ring on the negative side) have an estimated shelf life of 10 years (build date is usually blind embossed on Surefire, Energizer or Panasonic industrial, or you have an expiration date on Duracell and some Panasonic), often even more if not exposed to excessive heat. Bad batch of batteries can happen too... You can also try using a rechargeable 16650 battery, but Iím not sure it will work, considering the voltage difference.

With all these options considered, sell your Surefire and buy a single CR123A (or rechargeable) HDS flashlight, and never go back to other flashlights grin
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#4625453 - 01/05/18 10:15 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: 2016Accord]
mcwilly Offline


Registered: 07/31/17
Posts: 98
Loc: Canada
Most of my nitecore flashlights have parasitic drain, I remove the batteries when not in use.

I have a thrunite tn12 and despite being the cheapest flashlight in my home, it is my favorite. No drain there, even after months.
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#4625475 - 01/05/18 11:00 PM Re: Surefire Flashlights - Battery Drain in Storage? [Re: Linctex]
das_peikko Offline


Registered: 01/01/18
Posts: 499
Loc: San Antonio, TX
Originally Posted By: Linctex
Quit buying CR123's and use a single rechargeable 18650 instead.


Do you have a brand recommendation for the battery and the charger? My Surefire L5 eats batteries.

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#4625513 - 01/06/18 01:06 AM Re: Surefire Flashlights - Battery Drain in Storage? [Re: 2016Accord]
raytseng Offline


Registered: 12/11/08
Posts: 2333
Loc: CA
Buy 18650s targetted for flashlights for least risk.

Nitecore or Fenix would be my recs.
same with chargers nitecore i2 or i4 or fenix chargers will be fine.

Some will say you can just get panasonics ot samsung which maybe the guts and same as above but there are so many Panasonic variations if you don't know what you are doing you will get the wrong ones or unprotected cells that you end up frying. Not worth it for just to save a few $.

Note there is some benefit and pros/cons to having two 18650s of lower capacity that tou swap rather than 1 expensive higher capacity. 18650. Ultimately if money was no option youd buy just the highest capacity, but id you are on a budget you will be fine getting two 2600mah or 3000mah instead of one 3500mah for your same $25.


Edited by raytseng (01/06/18 01:13 AM)

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