18650 Cell Battery Holder Case Blossom Series Parallel 3.7V Defective Products but it is not able

but it is not able to transmit data to the control system for online monitoring to do some water quality analysis

Spare part type: X axis stepper motor

this sensor is less precise

brass wool

The STEMMA QT connectors on either side are compatible with the SparkFun Qwiic I2C connectors

18650 Cell Battery Holder Case Blossom Series Parallel 3.7V Defective Products but it is not ableDescription: Easy installation You can use this case with your own battery to form power system supply A case for rechargeable battery Simple DIY recharge power supply Specifications: Battery model: 18650 battery No. of battery Slot: 1 2 3 4 section Material: ABS Colour: Black 1 Cell 18650 Battery Holder Series Parallel Dimensions: 78x20x24mm Weight: 8g 4 Cell 18650 Battery Holder Series Parallel Dimensions: Approximately 78mm X 79mm X 21mm (L x W x