Battery AC DELCO or Energizer

Longest battery I had was from AC delco, lasted 10y! But apparently they are different now.

I put a Japan made energizer 2300mh storage at least for 8 monts, charged before storage and surprise, they make my flash work very quick even at maximum power, recycling flash time is even better than manufacturer specs.

I typically use what is shipped with the packaging. Most of my red dots are trijicon and they ship with energizer so I will continue to use it. I feel the companies do their own testing trail and error with battery life and usage at all power levels under all temperatures.

Energizer. Better QC than Duracell imho.

Duracell lasted 18 months on my RMR 3.25 Type 2 on auto setting, Energizer lasted 23 months on same setting!

Having ran both Duracell procell, and Energizer lithiums in RMR's, the energizers last 3+ years. I've gotten 2-2.5 years out of Duracell.

Mine went at 32K...just crapped out on me one morning. Luckily I work part-time at a Tire/Battery Garage. Put in an Energizer group size 47 (as stated above)

Worst batteries I've ever had the misfortune to buy. Both died within the space of 3 months and wouldn't put out any power whatsoever. No matter if I tried to charge them, it made no difference.

Saudi made AC delco batteries lack quality. Amaron and Varta are much better.

Man do yourself a favour and get either amaron or solite. Both lasted me almost 3 years. You're lucky that AC delco lasted you almost 2 years, the ones I get barely lasts a year, and that's with warranty replacement .