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Battery compartment extension - compatible with Blue Connect pool tester (inexpensive battery change possible with standard batteries) - Poolthermometer Shop - Smarte Pooltechnik
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Battery Charge Level Indicator 1/2/3/4/5/6/7/8S Lithium Battery Capacity Meter Tester Green/ Blue Display LED Tester Voltmeter - AliExpress
![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)
Battery compartment extension - compatible with Blue Connect pool tester (inexpensive battery change possible with standard batteries) - Poolthermometer Shop - Smarte Pooltechnik
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