The WatchMon 4 (WM4) is a recently phased-out Batrium battery supervisor. The newest supervisor is called the WatchMonCORE.
The WatchMon 4 (WM4) communicates with a range of different cell monitors making it extremely configurable and flexible.
The following revisions of the WM4 are outlined below:
WatchMon4 requires the latest release of WatchMonToolkit.
1. Connect the CMU cable (grey cable with blue heat-shrink) to the blue indication painted on the WatchMon4 cover as per the images below:
*This is the blue indication on the WatchMon.
The CMU cable allows the WatchMon hardware to be installed at a higher and unobstructed position outside the battery box. This also improves the WiFi signal significantly.
It makes connecting the CellMons much easier and more intuitive, using the existing connectors rather than having the risk of connecting something wrong and damaging the WatchMon or CellMon hardware.
It is recommended to start by connecting cell #1 (the most negative battery) to the 4 pin CMU cable connector (small black box highlighted in the photo below).
Then, work up the chain to the most positive battery, finishing the chain back on the 2 pin CMU cable connector.
CAUTION: Whilst preparing the cables for insertion into the WatchMon terminals, ensure that both the 2 pin and 4 pin connectors are not connected to the cell monitors until after you have prepared the cables.
On the initial setting up of the cell monitors, make sure to only have the USB plugged in and then attempt to connect the CellMon wires. We recommend that you disconnect the WatchMon power supply (2 pin connector) and all other cabling until you have successfully connected the CellMon network. Ensure that the software network testing utility has confirmed that the communication link is working properly.