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Reviews & Ratings for Primary Arms SLx AutoLive V1 Battery Cap — 22 reviews

(22 reviews)
Primary Arms SLx AutoLive V1 Battery Cap
Primary Arms SLx AutoLive V1 Battery Cap
$59.99 $53.99 Save 10%
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Most Helpful Positive Review Does exactly what it says.
I've purchased 6 of these so far. Four went on my Primary Arms optics and two went on my Sigs. All work perfectly. I constantly forget to turn off my optics so this will end up saving me a ton on batteries. Installation was simple and with the tool provided it's pretty straightforward. Primary Arms ...
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Most Helpful Negative Review Doesn’t not fit vortex strike eagle 1-8 ffp
Can’t really recommend it since it didn’t fit my optics. Hope they make a V2 soon to fit other optics. The concept and construction is solid tho
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Completely Worth it!

by PK, from PA, United States Written on June 9, 2026
Pickup up this device to screw in between the battery and cap, now I have shake awake capability. Completely worth it
Would recommend: Yes
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works sometimes and other times it stays on

by Frustrated, Verified Owner from OR, United States Written on May 28, 2026
Disappointed. Seemed like it was going to work testing it several times over a couple of days but after a day at the range it never turned off and battery was dead the next time I used it.
Would recommend: No
1 of 1 found the following review helpful.
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Battery Saver

by Michael Cumbow, Verified Owner from TN, United States Written on February 26, 2026
First off, installed this on my Sig Tango MSR without a hitch. Haven’t had a chance to test it out or even shoot the rifle it’s on but if it works as advertised, it’ll be the best thing since sliced bread!
Would recommend: Yes
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Works !!!!!

by Walt, Verified Owner from PA, United States Written on February 13, 2026
Assembled and tested. After 4+ minutes the illuminated reticle went off. As soon as I moved the rifle, it relit as advertised.
Pros:
  • Extend battery life.
Cons:
  • Sticks out a bit further.
Would recommend: Yes
Was it helpful to you? Yes | No
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PA SLx V 1 Battery Cap

by Sid, Verified Owner from VA, United States Written on February 12, 2026
A definite must have. Feature should be designed into scope, but appreciate the availability of the device
Pros:
  • looks like factory
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No
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Autolive battery

by Demun, Verified Owner from TX, United States Written on July 13, 2025
The autolive battery cap is a welcome enhancement! Shake awake should have been standard feature , but of course PA autolive battery cap corrects the lack of feature
Pros:
  • Work amazing seem to be durable
Cons:
  • Bulky
Best Used for:
  • Shake awake feature
Would recommend: Yes
Was it helpful to you? Yes | No
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SLx AutoLive V1 Battery Cap

by Ross, Verified Owner from MN, United States Written on June 9, 2025
works as advertised I recommend this Product get it..
Would recommend: Yes
Was it helpful to you? Yes | No
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Primary Arms AutoLive

by Dealmeister, Verified Owner from MI, United States Written on December 17, 2024
The Primary Arms AutoLive works perfect and augments my LPVO by adding “shake awake” functionality. Saves on battery strength and keeps your preferred settings on place without taking extra steps to turn off and reset. Great addition to my set up.
Would recommend: Yes
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Awesome Upgrade For Your Optic

by Wes, Verified Owner from KY, United States Written on December 14, 2024
This is perfect. I have 6 of these now for my Primary Arms and Sig Sauer optics. I love that I don't have to worry about turning off my optic anymore (which I am notorious for forgetting) and I get to keep the brightness setting right where I want and go right back to it. These are so great that I actually base what optics I'm going to buy on if they are compatible with this or not (or of course if they have shake awake built-in). Amazing, simply put.
Pros:
  • upgrade
Cons:
  • None
Would recommend: Yes
1 of 1 found the following review helpful.
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Waited to long to install, non functional out of the box.

by FM9, Verified Owner from MI, United States Written on December 10, 2024
I waited too long to install it on the LPVO I purchased, so, by the time I discovered that it wasn’t functioning it was past the point where I could return/exchange it! WC let this one slip thru
Would recommend: No
0 of 1 found the following review helpful.
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Last updated 2025-11-12 UTC.