![Battery compartment extension - compatible with Blue Connect pool tester (inexpensive battery change possible with standard batteries) - Poolthermometer Shop - Smarte Pooltechnik Battery compartment extension - compatible with Blue Connect pool tester (inexpensive battery change possible with standard batteries) - Poolthermometer Shop - Smarte Pooltechnik](https://pool-thermometer.eu/wp-content/uploads/2021/03/ersatzbatterie-halter-passend-fuer-blue-connect-einsetzen-300x300.jpg)
Battery compartment extension - compatible with Blue Connect pool tester (inexpensive battery change possible with standard batteries) - Poolthermometer Shop - Smarte Pooltechnik
![Battery for Blue Connect battery compartment extension (including replacement seal) - Poolthermometer Shop - Smarte Pooltechnik Battery for Blue Connect battery compartment extension (including replacement seal) - Poolthermometer Shop - Smarte Pooltechnik](https://pool-thermometer.eu/wp-content/uploads/2021/03/ersatzbatterie-batteriefach-erweiterung-passend-blue-connect.jpg)
Battery for Blue Connect battery compartment extension (including replacement seal) - Poolthermometer Shop - Smarte Pooltechnik
![Battery compartment extension - compatible with Blue Connect pool tester (inexpensive battery change possible with standard batteries) - Poolthermometer Shop - Smarte Pooltechnik Battery compartment extension - compatible with Blue Connect pool tester (inexpensive battery change possible with standard batteries) - Poolthermometer Shop - Smarte Pooltechnik](https://pool-thermometer.eu/wp-content/uploads/2021/03/ersatzbatterie-halter-passend-fuer-blue-connect.jpg)