Duracell Coppertop AAA Batteries, 20 Pack
Familiar AAAs that run fine in low drain gear, with recurring leak reports to watch for.
The short version
- Households stocking up for remotes, mice, toys and clocks
- People who want a long storage guarantee for a drawer supply
- Anyone loyal to a name brand battery
- The device is expensive and will sit unused for months
- You go through AAAs fast enough to justify rechargeables
- You want the lowest cost per cell
What owners like
- Dependable in remotes, toys and small electronics
- Long life in low drain devices
- Easy to find and widely trusted
Common complaints
- Reports of cells leaking in storage before their expiry date
- Leaks that damage battery compartments in devices
- Costs more than store brands that test about the same
Based on Duracell's product page, data sheet and FAQ, CNET's alkaline battery lab test, Popular Science's AAA battery guide, and r/batteries threads about Duracell leaks.
Research scores
Scored from the maker's specs and what owners report. Drew's own notes and photos will refine these.
Ownership
- Dec 2024
First bought.
Drew's hands-on notes for this product are on the way. Long-term updates will be added to this timeline.
What it does
A 20 pack of Duracell's standard AAA alkaline batteries for remotes, toys, mice and other everyday devices.
- Duracell's Power Boost ingredients, its standard alkaline formula
- Guaranteed 12 years in storage
- Built in the USA with US and global parts, per Duracell
- Mercury free
- Sold in packs from 2 to 24; this is the 20 pack
A sensible pick for low and medium drain gadgets if you want a big name and a 12 year storage guarantee. The main trade-off is leakage: owner forums report Duracell alkalines leaking in storage and in devices, and lab tests show store brands like Amazon Basics running just as long for less, so pull them out of anything you will not use for months.
How it compares
Specs
- Chemistry
- Alkaline manganese dioxide (Zn/MnO2)
- Size
- AAA (IEC LR03, ANSI 24A)
- Nominal voltage
- 1.5 V
- Weight
- 11 g each
- Operating temperature
- -20 to 54 C (-4 to 130 F)
- Storage guarantee
- 12 years
Worth knowing
- Keep batteries away from children and pets; children's battery use should be supervised
- Do not mix old and new batteries, or different brands or types
- Do not try to recharge, take apart or burn them
- Do not carry loose in a pocket or purse where metal can short them
- Remove from devices that will sit unused for several months
Questions
Do Duracell Coppertop batteries leak?
Any alkaline battery can leak, and many owners report Duracell leaks. Duracell says leaks are more likely when batteries are left in idle devices, mixed old with new, or stored somewhere hot.
How long do Duracell Coppertop AAA batteries last in storage?
Duracell guarantees them for 12 years in storage.
What is the difference between Coppertop and Optimum?
Duracell says Optimum has four times the Power Boost ingredients of Coppertop and is its higher end alkaline line.
Can you recharge Coppertop batteries?
No. Duracell says recharging non rechargeable batteries can cause them to rupture or leak.
Sources
- Duracell: Coppertop Battery AAA
- Duracell MN2400 AAA technical data sheet
- Duracell FAQ
- CNET: Best Alkaline Batteries
- Popular Science: The best AAA batteries
- r/batteries: What's going on with leaky Duracells?
Researched 2026-10-01. We bought this product; our page is built from the maker's details and what owners report across reviews and forums. We never copy Amazon customer reviews.
