So when I measure with a voltmeter between the spade connectors on my cell boards all but one of the 16 cell boards reports 0.00 volts instantly.  This one cell board always has a small amount of current coming from it say 0.09 volts or the like.  Do I take it that the cell board is fried as it can't maintain being normally closed?See More

I was doing some top balancing with some headlights last night and the cell boards suffered a transient current surge.  Now each time I close the contactor I get an alarm and have to continiously keep hitting the reset switch to keep the loop closed.  It appears all the cell boards are behaving properly.  This is very difficult to troubleshoot.  The first cell registers a long pulse or a rapid pulse after the disconnect meaning there was either a HVC or a that a HVC occurred in the last 30…See More

Upgrading my 48V system because the port side is consistently not powering up - it's not easy to diagnose due to the fact the control box that holds the TPM controller and contact switch has an interface that is entirely encased in some hard epoxy so I can't see what happens after I plug it in.Basically the unit gets power but the momentary "on" button doesn't allow the main contact to receive voltage. I've tested the button and it works fine. So it's within the epoxy.Anyway, I've decide to not…See More

User group for Electric Yacht