DURACELL 21/23 12V Alkaline Battery 2 Count Pack

Curated from 58 real Reddit conversations

Refreshed on: March 1, 2025

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DURACELL 21/23 12V Alkaline Battery 2 Count Pack

Brand: DURACELL
Price: $4
Snoop Score:
5.8
Sentiment
4.0
Popularity
5.0
Technical
6.0
Buy on Amazon for $4See All 12V Reviews
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Snoop's Take

The Duracell 21/23 12V Alkaline Battery is engineered to power a wide range of specialty electronics including car alarms, key fobs, and GPS trackers. It delivers a steady 12V output and comes in a convenient 2-count pack for extended use. Community sentiment is a mixed bag with some users lauding its longevity - one even noted, “I mean, when you don’t need it to turn an engine over, a battery can last a long time” - while others sharply criticize its quality, warning that “they are garbage and do yourself a favor and throw them away!” These comments highlight both a dependable performance in low-drain applications and sporadic quality issues that can result in premature failures. Overall, conversations hover between reliability and inconsistency. In conclusion, for buyers who require a straightforward, steady power solution for low-drain devices, this battery may be a viable option. However, potential users should be aware of mixed reviews regarding its durability before making a purchase decision.

Not for you? Check out our other rated 12V

I mean, when you don’t need it to turn an engine over, a battery can last a long time.

Positive Feedback

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

Negative Feedback
Product
5.8
DURACELL 21/23 12V Alkaline Battery 2 Count Pack
Buy on Amazon for $4
Home Security Devices
9 / 10
LED Lighting Systems
6 / 10
Automotive Accessories
9 / 10
Emergency Backup
6 / 10
See how this compares to all 12V

What it does well!

Key strengths users can’t stop talking about.
Long-lasting performance
“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.”➕
Easy terminal compatibility
“It's a really really small battery for a car. Like the width and height of a cellphone basically.”➕

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!”➕
Unclear date code and potential quality issues
“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.”➕

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Core Power Plays

The specs and strengths that make it shine.
Difficulty finding technical specifications for specialized batteries
“I figured finding a spec sheet online would be easy... Well, I was pretty much wrong about that.”➕

Hidden Hero Hacks

Unexpected tricks and side‑door uses you’ll love.
Alternative emergency solutions and preparedness for battery failure
“One never knows when any 12V car battery might need a jump and these packs are so much more convenient than using jumper cables or waiting on a tow service to jump/tow you.”➕
“It seems like there’s a rash of 12v issues recently.”➕
“Just ordered a 12 volt lithium battery to replace it with.”➕
Alternative battery types for Power Wheels replacement
“keep it charged up or it wont be long before you're looking for a new one again.”➕
“It’s just a 12v sealed lead acid battery.”➕
“That cheap alternative battery is totally fine.”➕
“12 volt batteries won’t electrocute but they can cause severe burns.”➕

Buyer’s Cheat Sheet

What to check before you click ‘Add to Cart.’
Confusing Power Boost branding and ingredient information
“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.”➕
“It sounds like Duracell Optimum didn't sell very well and they have re-marketed it to be Duracell Power Boost in order to... Dare I say it... "Boost" their sales.”➕
Product compatibility and application questions
“The battery you linked in one of the comments has terminals that are not for cars, its for mobility wheelchairs.”➕
Debate over throwaway battery performance versus rechargeables
“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.”➕

Cautionary Callouts

Know the pitfalls before they catch you off guard.
Battery lifespan and replacement timing variability
“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.”➕
“Cheap insurance.”➕
“We have that solar rear spoiler, that must be the reason why it's still alive?”➕
Alkaline battery recharging challenges
“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.”➕
“It should be possible to charge them a handful of times though.”➕
“Alkaline cells are sealed and by increasing the pressure they can start leaking!”➕

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