I bought a Sig Romeo 5 recently and for the most part it has lived up to my expectations. However a couple of days ago I picked up the rifle it is mounted on and there was no dot. The sight was dead. I tried turning it on but no luck. I changed the battery and it came back to life. I have only had the sight for three weeks now so it is well under the 40 to 50K hours that it is supposed to run. I have tested the MOTAC feature (by setting it on a table then once it shut down tapping the rifle) both before and after the battery change it has always worked.

I bought it because I wanted a sight that I could leave on while the rifle is in the safe with the expectation that it would be ready to go if ever I needed it. So I am more than a little disappointed. Has any one else had this happen with the Romeo 5?

If it wasn't a bad battery, then you should contact Sig for repair or replacement. See if it doesn't have any problems with the new battery for at least the same length of time first.

I have 5 of them, from about 18 months old to 6 months old. All of my batteries are holding up.

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Only a cold warrior

I have two just about 14 months old. Both are still on the original batteries, both still working just fine. I suspect a bad battery in yours.

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Pisgah

Was it the battery that came with the Romeo 5 that failed so quick? If so I would see how the new battery does. If that fails just as quick then it is time to contact Sig for service.

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Seek peace? Prepare for war!

Sad to hear of this problem. I never, never, never liked the mousetrap platform but I got one recently and put a Romeo 5 on it. I proved to myself that a 16" cheap factory black gun could shoot sub moa using factory sp. Since then I put my favorite K4 on it and put it away, where is stays. I question if and when I return the Romeo 5 will it be zeroed or not? Would I be better off with a Mini 14 shotgun or a 30 Carbine?

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"Don't Give Up the Ship"

As Luger9x19 already pointed out, the batteries that typically come with optics are not the best quality. Purchase a new, name brand battery and try it again. If it dies again, send it back.

Many of the less expensive red dot sights are now claiming this long battery life. I don't think I would trust most of them.

Two years later mine is still functioning normally on the first battery.

Thanks for all the suggestions. It was the battery that shipped with the sight that died. If the new one dies I guess I'll send it back to Sig.

Maybe I read you wrong, but I have to wonder about shooting sub-MOA with a 2 MOA dot.

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Only a cold warrior

Say, please let us know what you figure out Mzuri - Occam's Razor says the battery is probably the culprit, but if it does wind up being the optic itself, I'd be real curious to hear how the company treats you. (I have two of the Romeo5s myself, and they've been great - I believe your problem is the first issue I've ever heard of with that model.)

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Now go make God proud...

Have you tried an open or aperture sight on the rifle? Seems that a simple and useful sight would be far more reliable than something dependent on a battery.

Q: I'm having problems with the fuel-injection system of my 2018 Subaru Outback 4-cylinder. I put in some fuel injector cleaner, but I'm wondering whether others have had similar issues with this year/model.

A: Perhaps you should get a horse instead.

Just funning, rockquarry. I'm a big fan of BUIS on my red-dotted using guns, and I'm sure our friend Mzuri has given solid consideration to what suits his needs. Have a great one, folks!

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Now go make God proud...

My red dot uses a 2032 battery. Afew weeks ago I went out shooting and there was no red dot. The instrument was only 1.5 years old and had not been used that much. Most of the time I like to use my iron sights and just aim right thru the red dot. Come to find out the battery that was installed in my red dot was over 5 years old. I guess it was its time to geaux.

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How many guns are too many?

I had a similar experience a few weeks ago. Was invited to go on a hog hunt last minute. Grabbed the rifle bag and a couple of extra boxes of ammo and away we went. Get out in the field and I turn on my red dot to find out that it is dead... should have checked it before I left. Took it off and hunted with open sights.

I can't believe it.
After I returned home from my PTSD meeting last night I was looking at my red dot. As I was looking thru it I saw a faint red dot! Not again! I must have turned it off incorrectly the last time I used it. Luckily, I bought a 2 pack of 2032 batteries. After installing a new battery all was well. I painted a white line on the 0 mark of the dial so I will know it's off from now on.

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How many guns are too many?

The romeo5 has no on or off button. Its automatic on with any movement. And turns off automatically when 2 minutes of no movement. Vibrations can also turn it on (loud car exhaust)

Sent from my SM-G950U using Tapatalk

Actually, they do have manual on and off buttons.

To manually turn the unit on or off, you hold either the brightness (+) or the dimming (-) button down for a second or two.
The only problem I have with my Romeo 5s is that they’re from China and I won’t be buying any more of them for that reason alone.

Too bad really, they should move their production from China to a non-enemy nation.

Of course they are from China. Most inexpensive red dots are. I would bet that even high dollar, American made red dots source parts from China.

It won’t be easy, nor will it be quick, to flush as much of China as possible out of our economy and our lives, but it’s necessary and it’s the right thing to do.

Going forward; the less Chinesium in our lives, the better, both for ourselves, and for our country, and I’m doing my best to make it a priority for myself.