DURACELL Duracell 21/23 12V Alkaline Battery 4 Pack

Curated from 64 real Reddit conversations

Refreshed on: March 1, 2025

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DURACELL Duracell 21/23 12V Alkaline Battery 4 Pack

Brand: DURACELL
Price: $5
Snoop Score:
5.4
Sentiment
2.7
Popularity
1.2
Technical
7.4
Buy on Amazon for $5See All 12V Reviews
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Snoop's Take

The Duracell 21/23 12V Alkaline Battery is a specialized power solution designed to keep key fobs, car alarms, GPS trackers, and a variety of electronic devices running smoothly. It offers a stable 12V output and is built to work across multiple high-powered devices. Consumers are split on its merits: while some claim, “I think it's a better battery,” praising its longevity under light load, others lambaste it with scathing remarks like ‘They are garbage and do yourself a favor and throw them away!’ Reviews also note issues with potential aged stock and fit problems in rechargeable versions, painting a picture of a product that doesn’t consistently hit the mark. Overall, despite its strong specifications and trusted brand lineage, the mixed feedback—with a notable tilt towards negative experiences—suggests buyers should proceed with caution and weigh alternatives in the category.

Not for you? Check out our other rated 12V

I think it's a better battery.

Positive Feedback

They are garbage and do yourself a favor and throw them away!

Negative Feedback
Product
5.4
DURACELL Duracell 21/23 12V Alkaline Battery 4 Pack
Buy on Amazon for $5
Home Security Devices
10 / 10
LED Lighting Systems
7 / 10
Automotive Accessories
10 / 10
Emergency Backup
7 / 10
See how this compares to all 12V

What it does well!

Key strengths users can’t stop talking about.
Duracell battery delivers reliable performance
“I think it's a better battery.”➕
“I mean, when you don’t need it to turn an engine over, a battery can last a long time.”➕
“it did fine for the six additional months I had the car.”➕

Where it needs some work!

Areas to watch—feedback on possible improvements.
Poor product quality
“They are garbage and do yourself a favor and throw them away!”➕
Questionable rebranding practices
“Dare I say it... "Boost" their sales...”➕
Potential battery failure from aged stock
“I think that is Jan 2020 since this battery was sold a few months ago, and has failed very quick as if it was old/bad when sold.”➕
“Time to replace the battery.”➕
Rechargeable batteries are too large and have poor fit in devices
“I had the exact same problem with the exact same batteries, and now I am afraid to put any rechargeables in there.”➕
“do these batteries seem overly tight or do they fit in the same manner as the alkaline batteries that came with the controller?”➕

Compare On All Talked About Dimensions

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Core Power Plays

The specs and strengths that make it shine.
Varied lifespan of OEM 12V batteries
“Still running the original from 2015.”➕
“changed mine after 5 years just to be proactive.”➕
“Um…my 2013 still has its original.”➕
“still going in year 6.”➕
Debate over Power Boost ingredient and battery chemistry
“I am sorry the website hasn't updated with information on Power Boost Ingredients.”➕
“So, it sounds like chemistry from the 2019 Duracel Optimum had been leveraged to the other battery lines.”➕
“lol this is the craziest shit I ever read.”➕
“Power Boost is trademarked by Duracell 5 months ago.”➕

Buyer’s Cheat Sheet

What to check before you click ‘Add to Cart.’
Proactive 12V battery replacement timing
“Nice idea. I thought I would do the same once I reached the 2-year mark mainly because of the stories I've read about these 12v batteries.”➕
“doesn't seem to be a mileage thing but age thing.”➕
“One never knows when any 12V car battery might need a jump and these packs are so much more convenient than using jumper cables.”➕
“Cheap insurance.”➕
Discussion on battery pricing and warranty tradeoffs
“Duracell slightly cheaper but 3 year warranty.”➕
Terminal compatibility observations
“The battery you linked in one of the comments has terminals that are not for cars, its for mobility wheelchairs.”➕
“It’s a really really small battery for a car. Like the width and height of a cellphone basically.”➕
Advice on alternative battery options for Power Wheels
“i would go with the biggest 12v that fits.”➕
“It’s just a 12v sealed lead acid battery.”➕
“That cheap alternative battery is totally fine.”➕
“Power wheel batteries are fused, either internally or on the battery.”➕

Cautionary Callouts

Know the pitfalls before they catch you off guard.
OEM battery failure issues and limited warranty support
“It seems like there’s a rash of 12v issues recently.”➕
Confusing date code labeling
“Surprisingly a quick search didn't turn up a duracell document explaining this.”➕
“I am not sure if the third character is a Zero or the Letter O.”➕
“I could not find documentation to confirm the date code nomenclature.”➕
“It’s bad and I need to replace it, just curious how old it is.”➕
Alkaline batteries are not designed for effective recharging
“NEVER charge an alkaline in a regular charger (especially Duracell batteries). It will at best leak and destroy your charger or explode causing a real mess.”➕
“You can recharge charge them to some extent.”➕
“Just don't, as most mentioned there was a time and for special cases this is possible (>75% SOC to a little bit more).”➕
General criticism of alkaline battery performance and leakage risks
“All alkalines have pretty poor performance under higher loads and the potential to leak.”➕
“Personally I see no reason to buy alkaline cells at all.”➕
Lack of accessible technical charging specifications
“I figured finding a spec sheet online would be easy... Well, I was pretty much wrong about that.”➕

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