It would appear that the battery has dual 2.1 or 2.5mm dc connections. One jack is used to connect to the EZ-B, and the other is where the charger connects to.

Thanks!

I guess ill buy this end for the ez-b. Will wire a mini dean to the connector.

Or just wire a mini deans directly to the battery itself... cut the barrel plug off the battery and solder a mini deans to it...

Doesn't the V4 come with an adapter? I'm sure I read it does...

I remember that too. Is it this thread at post #35?

Development kit only.