I bought the batteries as replacements for A23S. What is the difference to the A23 there is, so far I could not figure out. Even if the "S" is missing, so the batteries are working properly. Since I sometimes read in various reviews that buyers complained that loose batteries were sent, should be mentioned here that the batteries were delivered in their original packaging.
The price is unbeatable. Who has ever looked up at the store know what I'm talking about.
I use a battery in a remote control of radio-controlled sockets, the other in a remote control for a garage door.