Aico Ei146RC optical smoke alarm (replaces Ei146 model). Interconnectable with up to 19 other compatible Aico alarms. 9V battery back-up (included) capable of lasting up to 4 years in standby mode and capable of powering the alarm for up to 2 years without mains power.
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800mWh CR2 Battery 3.2V CR2 Polaroid Camera Rechargeable Battery+charger for Camera Wireless Doorbells Smoke Alarm Tracker Toy
Aliexpress UK
The Aico Ei650IRF Optical Smoke Alarm is a battery-powered device designed to detect smoke in your home. It comes with one battery included and has a long expiry date until 2033 . The sleek white design adds a modern touch to your home security system. Perfect for ensuring the safety of your household against potential fire hazards. Ideal for use in bedrooms, hallways, or kitchens to provide added peace of mind. VAT is included in price Box is not included No base included
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Rechargeable 9V Battery USB-C Charge,21800mWh Long-lasting 9V Li-Ion Battery with Free Cable,for Smoke Alarm,Camera,Clocks,Audio
Aliexpress UK
Aico EI146E 9V Optical Smoke Alarm - White EXP- 2035
eBay
PUJIMAX USB 9V Rechargeable Battery 1200mAh Type-C Rechargeable 9V Li-ion Battery for Helicopeter Model Multimeter Smoke Alarm
Aliexpress UK
Aico Ei3014 Heat Alarm – 2031 Expiry – Genuine Aico Unit. This genuine Aico Ei3014 Heat Alarm has been fully tested before dispatch, including AudioLINK diagnostics checks, to ensure correct operation and reliability.
eBay
New 9V 9800mAh Lithium ion Rechargeable Battery Long Lasting 9v Li-ion Batteries with Cables for Smoke Detector Microphone Alarm
Aliexpress UK
Aico Ei100 B. Never opened.
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USB 9V Rechargeable Battery 1200mAh Type-C Rechargeable 9V Li-ion Battery for Helicopeter Model Multimeter Smoke Alarm
Aliexpress UK
These were used temporarily in houses until the mains powered smoke alarms were upgraded as they had passed the expiry date. The battery exp ranges from 2035 - 2036 They weigh 185 grams per unit x 35 so total 6475 = 6.5 kg
eBay
Soshine CR2 15266 300mAh Rechargeable Battery Smart LiFePo4 Charger 3.2V 300mAh LiFePo4 Battery for Rangefinders Smoke Alarms
Aliexpress UK
Aico Ei3014 Heat Alarm – 2034 Expiry – Genuine Aico Unit. This genuine Aico Ei3014 Heat Alarm has been fully tested before dispatch, including AudioLINK diagnostics checks, to ensure correct operation and reliability.
eBay
Soshine CR2 Rechargeable Battery and Charger 3.2V 300mAh LiFePo4 Battery for Rangefinders Telescopes Electric Toys Smoke Alarms
Aliexpress UK
Aico Ei3014 Heat Alarm – | Genuine | Fast Dispatch. The Aico Ei3014 Heat Alarm is a proven, mains-powered heat detector widely used across the UK in residential and rental properties. -Genuine Aico Ei3014 heat alarm.
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AA Li-ion Rechargeable Battery DLGpower 14500 850mAh 3.7V Batteries for RC Airplanes Flashlights Electric Toys Smoke Alarms
Aliexpress UK