What's the difference between AE-23 and A23?

As far as I can tell and I'm no expert, but there is no difference between the AE-23 12 volt battery and the A23 12 Volt battery. The popular brand companies use the A23 designator and off brand companies use the AE23 designator. Hope this helps

Nothing on the Amazon page or image says it's alkaline. Where does it indicate that it's alkaline?

if you llok close up on the battery its says alkaline on it. you may not see it in this picture, but if you look at other A 23 energizer picture you will see it.

what's the difference between the 23a and 27a batteries?

Google this " List_of_battery_sizes " (where I got answer). The A23 is 2/100 of longer" and 9/100" wider. So a 27a should fit where a 23a does fits in most cases, but not necessary the other way round. Both are 12V DC so no harm to a device if either battery fits and works in your device.

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Energizer Miniature Alkaline

Product ID: 1892794

Details

Battery Capacity
50
Battery Cell Composition
Alkaline
Brand
Energizer
Number of Batteries
2 12V
Recommended Uses For Product
Watch

⚡50mAh long-lasting capacity

🌿Zero mercury eco-friendly

🔋12V high-voltage power

€ 10.99

Duties & taxes included

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Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power up your life with Energizer A23 — small battery, big impact!

COMPACT YET MIGHTY - Slim 3.4 x 1.8 x 0.4 inch design fits seamlessly into your gadgets without bulk.
TRUSTED BY MILLIONS - Energizer, the #1 specialty battery brand, with 4.8-star rating from over 58,000 users.
ECO CONSCIOUS ENERGY - Mercury-free composition reduces environmental impact while delivering dependable power.
VERSATILE COMPATIBILITY - Perfect for Bluetooth headsets, garage door openers, cameras, and more—never worry about power again.
POWER YOUR ESSENTIALS WITH CONFIDENCE - 12V miniature alkaline batteries designed for reliable, long-lasting performance in keyless entry, remotes, and security devices.

Energizer A23 Batteries (2 Pack) are 12V miniature alkaline specialty batteries delivering reliable, long-lasting power for a wide range of electronic devices including keyless entry systems, Bluetooth gadgets, and security remotes. With a compact design, zero mercury content, and a trusted brand reputation, these batteries combine eco-consciousness with high performance to keep your essential devices running smoothly.

Specifications

ASIN	B00004YK10
Amperage	23 A
Antenna Location	Watch
Battery Capacity	50 milliamp_hours
Battery Cell Type	Alkaline
Battery Weight	17.01 g
Best Sellers Rank	#463 in Health & Household ( See Top 100 in Health & Household ) #53 in Sales & Deals #223 in Household Supplies
Brand	Energizer
Compatible Phone Models	Any equipment that operates on alkaline A23 batteries
Customer Reviews	4.8 4.8 out of 5 stars (58,862)
Global Trade Identification Number	00039800110091, 00809143109690
Included Components	Battery Pack
Item Dimensions	3.4 x 1.8 x 0.4 inches
Item Type Name	Miniature-Retail Electronics
Item Weight	18.14 g
Manufacturer	Energizer
Model Name	ENR A23BPZ-2.Z4 ALA23 2PK COO CHINA
Model Number	A23BPZ-2
Number of Batteries	2 12V batteries required. (included)
Reusability	Single Use
Unit Count	2 Count
Voltage	12 volts
Warranty Description	Comes with Manufacturer Warranty.

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