With an output of between 13 to 35w the EZ battery is perfect for both non sub and less powerful sub tanks.
 
Specifications:
 
Operating Wattage: 13W-35W
Battery Capacity: REAL1500mAH
Maximum Output Current：13.5A
Maximum Output Voltage: 7.5V
Clearomizer Resistance: 0.2 Ohm (min.)
Charging: Micro USB DC 5V/1A
 
Box Contents:
 
1x EZ.WATT Mod
1x Prism T20S Tank (0.8ohm)
1x Spare Prism S Coil (1.5 ohm)
1x Spare Drip Tip
1x Quick Start Guide
1x Micro USB Charging Cable
1x User Packet
Colors Available : Red&Black Crackle,Black,Gray,Blue,Red,Purple