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 Can a CR2016 be used in place of a CR2032
BSTOCK  [Team Member]
5/11/2010 11:41:37 AM EST
Both are 3v button batteries. I am refering to illuminated reticel scope use.
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TonyAngel  [Member]
5/11/2010 12:10:59 PM EST
I think the 2016 is a lot thinner than the 2032. It might not even make contact or you might have the reticle going in and out.
BSTOCK  [Team Member]
5/11/2010 12:14:14 PM EST
Thanks, I will run out and buy the proper battery.
Nexus6  [Team Member]
5/11/2010 12:22:19 PM EST
A 2016 is about half the thickness of a 2032.

http://data.energizer.com/PDFs/cr2032.pdf

http://data.energizer.com/PDFs/cr2016.pdf
KILLERB6  [Member]
5/11/2010 12:52:04 PM EST
Originally Posted By Nexus6:
A 2016 is about half the thickness of a 2032.

http://data.energizer.com/PDFs/cr2032.pdf

http://data.energizer.com/PDFs/cr2016.pdf


...and therefore you CAN replace on 2032 with 2x2016s.
thezman  [Team Member]
5/11/2010 1:07:38 PM EST
Originally Posted By KILLERB6:
Originally Posted By Nexus6:
A 2016 is about half the thickness of a 2032.

http://data.energizer.com/PDFs/cr2032.pdf

http://data.energizer.com/PDFs/cr2016.pdf


...and therefore you CAN replace on 2032 with 2x2016s.


Two 2016's in series equals 6 volts total.

If the circuitry cannot handle the 6 volts, say good bye to your illumination.

You can use one 2016 with an appropriate spacer to make up for the difference in thickness. Not recommended, but still possible.
thezman  [Team Member]
5/11/2010 1:08:32 PM EST
Originally Posted By BSTOCK:
Thanks, I will run out and buy the proper battery.


The correct answer.
ihon  [Team Member]
5/13/2010 7:46:42 PM EST
Actually, on certain optics, you can use a two 2016 batteries in place of a single 2032. Trijicon Reddot, Tasco Optima 2000 & Jpoints can use them to increase the illumination for daytime use. It will be too bright for indoor use.
Blackmore  [Team Member]
5/14/2010 12:36:41 AM EST
Originally Posted By ihon:
Actually, on certain optics, you can use a two 2016 batteries in place of a single 2032. Trijicon Reddot, Tasco Optima 2000 & Jpoints can use them to increase the illumination for daytime use. It will be too bright for indoor use.



The question is, does he want to risk his new Konus M30 by using this trick to increase what most people say is its inadequate daytime illumination?
gee223  [Member]
5/14/2010 12:48:30 AM EST
If you can see your reticle, you don't need daytime illumination anyway, I've never understood that complaint.

You could always bend the contacts out just a hair and run 1 2016, or just stick a penny in there for a spacer.
mousegunner  [Member]
5/14/2010 3:09:43 AM EST
Originally Posted By Blackmore:
Originally Posted By ihon:
Actually, on certain optics, you can use a two 2016 batteries in place of a single 2032. Trijicon Reddot, Tasco Optima 2000 & Jpoints can use them to increase the illumination for daytime use. It will be too bright for indoor use.



The question is, does he want to risk his new Konus M30 by using this trick to increase what most people say is its inadequate daytime illumination?


I did this on my Nightforce 1-4x, which gave me a daylight visible reticle, but chickened out quickly, because I wasn't sure how long it would take to, or if it would, fry my circuitry.
mousegunner  [Member]
5/14/2010 3:13:32 AM EST
Originally Posted By gee223:
If you can see your reticle, you don't need daytime illumination anyway, I've never understood that complaint.


I find that I can pick up an illuminated dot reticle faster than I can a black reticle, particularly up close. Think "BAC". As always, YMMV.

I did find this useful recently at the long range stage of a rifle match. The targets were steel, painted black, against a white background, from 75 meters to 330 meters. The illuminated reticle contrasted well against the black target; not sure how it would have been with a black reticle.

ar154all  [Team Member]
5/14/2010 3:16:04 AM EST
Originally Posted By thezman:
Originally Posted By BSTOCK:
Thanks, I will run out and buy the proper battery.


The correct answer.


Umm... get two
zoinks  [Team Member]
5/14/2010 9:00:10 AM EST

Originally Posted By Blackmore:
Originally Posted By ihon:
Actually, on certain optics, you can use a two 2016 batteries in place of a single 2032. Trijicon Reddot, Tasco Optima 2000 & Jpoints can use them to increase the illumination for daytime use. It will be too bright for indoor use.



The question is, does he want to risk his new Konus M30 by using this trick to increase what most people say is its inadequate daytime illumination?

Excellent question, Blackmore.

Most illumination systems are very simple DC circuits. You have the power source, wires, switch and the appliance(s). Benefits are this is a simple and cheap circuit.

For telescopic sights, the main concern about illumination is the heat that is created inside the scope when turned on and not the battery life. The only thing that controls battery life is this type of circuit is the internal construction of the battery itself (as opposed to the more expensive processed circuits that are in an Aimpoint, for example.)

So, when you turn on the "simple" circuit, you get heat build up. Heat in the wires, rheostat switch and at the connections means that resistance goes up, and the battery discharges at a higher rate (depending on the appliance.) Battery life then is shorter then specified in the catalog as it has to discharge at a faster rate.

For example, the typical CR2032 battery is rated at 60 hours continuous discharge at a specific power output (which I've forgotten.) As temperature of the circuitry increases and resistance goes up, the battery will discharge at a higher rate and depending on how well that battery is constructed, that rate will be control by internal battery construction or the battery will simply discharge like crazy and have a real short life.

Using two CR2016 batteries in series (in place of one CR2032) will cause the batteries to really pump out the juice for a bit, and as long as the batteries are replaced when dead (don't leave dead batteries in place as they will break down and corrode the insides) there shouldn't be any problems except for the Heat build up, unless the rheostat switch is really crappy or if the LEDs are really crappy.


More explanation here:

Heat is bad for a scope as it affects o-rings, grease and the various bonding agents used in constructing a scope, plus it expands the metal parts. In non-illuminated scopes, heat comes from two sources: the Sun and recoil events. Illumination does add a great deal of internal heat, and statistically, illuminated scopes don't live as long as non-illuminated scopes. (Everyone relax, there are a number of reasons for this, most notably is the higher usage of scopes with illumination.)

No matter what the bench rest guys say about scopes (scopes should last forever!), scopes are more mechanical instruments that we can see through as opposed to a purely optical instrument with some mechanical functions like a pair of binoculars. There are only so many recoil cycles that the scope is going to be able to hold zero for and beyond that, the scope's mechanical performance will simply degrade.
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