Fast charger & Batteries for E-Trac

[Surf Master]

It seems that the stock charger is just like minelabs excalibur chargers,i tried to connect the excalibur http://www.onlybatterypacks.com/ charger but the adapter tip is a smaller fitting,so i need a new adapter,or a faster charger,i was hoping that i could use the same fast chargers i bought for my excalibur,but that little end that fit's into the rechargable slimpacks are tinny,and were do you E-trac users get batteries for the rechargable slimpacks,i am sure that you all can give me the links ,thanks Earl