You can use the Remora PCB in a different housing and with smaller batteries if your application requires it.
For example, the Remora PCB can fit inside a Dart housing and be wired up to a 4 x AA battery pack.
We recommend you use Lithium batteries as they last longer and have a stable voltage over their lifetime.
Make sure you use proper anti-static protection when handling the electronics.
Make sure you get the polarity right!