![Jez @ Peak Electronic Design Ltd 💙🇪🇺 on X: "The inside of the Duracell 12V MN21 battery is simply 8 button cells. Seems wasteful on packaging as the active volume must be Jez @ Peak Electronic Design Ltd 💙🇪🇺 on X: "The inside of the Duracell 12V MN21 battery is simply 8 button cells. Seems wasteful on packaging as the active volume must be](https://pbs.twimg.com/media/EPnc6pEWsAQ9nec.jpg)
Jez @ Peak Electronic Design Ltd 💙🇪🇺 on X: "The inside of the Duracell 12V MN21 battery is simply 8 button cells. Seems wasteful on packaging as the active volume must be
![PKCell 5 Pack A27 27A 12V Alkaline Battery, Alkaline A27G A27S GP27AE 27GA MN21 Batteries for Garage Doors Opener, Ceiling Fans, Wireless Doorbells Remotes, Security Systems, Keyless Entry Systems PKCell 5 Pack A27 27A 12V Alkaline Battery, Alkaline A27G A27S GP27AE 27GA MN21 Batteries for Garage Doors Opener, Ceiling Fans, Wireless Doorbells Remotes, Security Systems, Keyless Entry Systems](https://www.batteryworld.com/wp-content/uploads/2023/02/PKCell-5-Pack-A23-23A-12V-Alkaline-Battery-Alkaline-A23G-A23S-GP23AE-23GA-MN21-Batteries-for-Garage-Doors-Opener-Ceili-B07FL2F1N2-3.jpg)
PKCell 5 Pack A27 27A 12V Alkaline Battery, Alkaline A27G A27S GP27AE 27GA MN21 Batteries for Garage Doors Opener, Ceiling Fans, Wireless Doorbells Remotes, Security Systems, Keyless Entry Systems
![Duracell - MN21B - Battery,Non-Rechargeable,Cylindrical,Alkaline-Manganese Dioxide,12 VDC,34mAh - RS Duracell - MN21B - Battery,Non-Rechargeable,Cylindrical,Alkaline-Manganese Dioxide,12 VDC,34mAh - RS](https://assets.rs-online.com/f_auto,q_auto/70149206.jpg)
Duracell - MN21B - Battery,Non-Rechargeable,Cylindrical,Alkaline-Manganese Dioxide,12 VDC,34mAh - RS
![Amazon.com: 2pk Duracell MN21 Alkaline 12V Battery A23 MN21 23AF 23AE V23GA GP23A L1028 : Health & Household Amazon.com: 2pk Duracell MN21 Alkaline 12V Battery A23 MN21 23AF 23AE V23GA GP23A L1028 : Health & Household](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/61k+3Si5OpL.jpg)
Amazon.com: 2pk Duracell MN21 Alkaline 12V Battery A23 MN21 23AF 23AE V23GA GP23A L1028 : Health & Household
![Amazon.com: Duracell 12 Volt Alkaline Alarm Remote Battery MN21 / A23 2 Pack(Counts 1) : Health & Household Amazon.com: Duracell 12 Volt Alkaline Alarm Remote Battery MN21 / A23 2 Pack(Counts 1) : Health & Household](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/41bcdlnLp8L._AC_.jpg)
Amazon.com: Duracell 12 Volt Alkaline Alarm Remote Battery MN21 / A23 2 Pack(Counts 1) : Health & Household
![Amazon.com: Synergy Digital Replacement Battery, Compatible with Duracell MN21/23 Replacement, (Alkaline, 12V, 33 mAh) Battery : Health & Household Amazon.com: Synergy Digital Replacement Battery, Compatible with Duracell MN21/23 Replacement, (Alkaline, 12V, 33 mAh) Battery : Health & Household](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/51InM6holCL.jpg)
Amazon.com: Synergy Digital Replacement Battery, Compatible with Duracell MN21/23 Replacement, (Alkaline, 12V, 33 mAh) Battery : Health & Household
![PKCell 5 Pack A27 27A 12V Alkaline Battery, Alkaline A27G A27S GP27AE 27GA MN21 Batteries for Garage Doors Opener, Ceiling Fans, Wireless Doorbells Remotes, Security Systems, Keyless Entry Systems PKCell 5 Pack A27 27A 12V Alkaline Battery, Alkaline A27G A27S GP27AE 27GA MN21 Batteries for Garage Doors Opener, Ceiling Fans, Wireless Doorbells Remotes, Security Systems, Keyless Entry Systems](https://www.batteryworld.com/wp-content/uploads/2023/02/PKCell-5-Pack-A23-23A-12V-Alkaline-Battery-Alkaline-A23G-A23S-GP23AE-23GA-MN21-Batteries-for-Garage-Doors-Opener-Ceili-B07FL2F1N2-4.jpg)
PKCell 5 Pack A27 27A 12V Alkaline Battery, Alkaline A27G A27S GP27AE 27GA MN21 Batteries for Garage Doors Opener, Ceiling Fans, Wireless Doorbells Remotes, Security Systems, Keyless Entry Systems
![Amazon.com: Duracell 12 Volt Alkaline Alarm Remote Battery MN21 / A23 2 Pack(Counts 1) : Health & Household Amazon.com: Duracell 12 Volt Alkaline Alarm Remote Battery MN21 / A23 2 Pack(Counts 1) : Health & Household](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/41bcdlnLp8L._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOURANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA808%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)