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 A23 Batteries, A23 Battery Alkaline, 2 Count | For garage door openers, keyless entry, cameras, and security devices; 12V 23A battery

Product ID: 1892794

Details

Battery Capacity
50
Battery Cell Composition
Alkaline
Brand
Energizer
Number of Batteries
2 CR123A
Recommended Uses For Product
Watch

⚡50mAh long-lasting capacity

🌿Zero mercury eco-friendly

🔋12V high-voltage power

€ 6.00

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Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Energize your smart life with power that never quits!

COMPACT YET MIGHTY - Miniature design fits seamlessly into small electronics without compromising performance
TRUSTED BY MILLIONS - Top-rated with 4.8 stars from over 48,000 users—dependability you can count on
ECO CONSCIOUS ENERGY - Mercury-free batteries that reduce environmental impact while delivering peak power
VERSATILE COMPATIBILITY - Replaces multiple specialty battery models including 1181A, DL23, MN21, and more
POWER YOUR ESSENTIALS WITH CONFIDENCE - Reliable 12V alkaline power for keyless entry, garage doors, and security devices

Energizer A23 Batteries deliver dependable 12V alkaline power in a compact 2-pack, perfect for powering garage door openers, keyless entry systems, cameras, and security devices. With a long-lasting 50mAh capacity and zero mercury content, these miniature batteries combine eco-friendly design with versatile compatibility across multiple specialty battery types, backed by a 4.8-star rating from over 48,000 satisfied customers.

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	#272 in Health & Household ( See Top 100 in Health & Household ) #1 in 12V Batteries
Brand	Energizer
Compatible Phone Models	Any equipment that operates on alkaline A23 batteries
Customer Reviews	4.8 4.8 out of 5 stars (48,281)
Global Trade Identification Number	00039800110091
Included Components	Battery Pack
Item Dimensions	3.4 x 1.8 x 0.4 inches
Item Type Name	Miniature-Retail Electronics
Item Weight	9 g
Manufacturer	Energizer
Model Name	ENR A23BPZ-2.Z4 ALA23 2PK COO CHINA
Model Number	A23BPZ-2
Number of Batteries	2 CR123A batteries required. (included)
Reusability	Single Use
UPC	039800110091
Unit Count	2 Count
Voltage	12 volts

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