Positive/Negative Strap refer to the battery tab which is the connection between cell positive/negative and the batter cover plate.Positive strap is made of aluminum plate or aluminum foil. Negative straps made of copper plate or copper foil.
· Be easy to bend at 90° and 180°
· Can be solid (thickness less than 0.6mm)
· Can be flexible(thickness greater than 0.6mm)
· Be better for laser welding and ultrasonic welding
· More reliable for Cell long life
· Better electric conductivity
· Less thermal issue during using