Comparison of several common conductive connectors

Sep 06, 2025

Connection piece size: 0.1x5x100mm

Type	Electrical conductivity	Solder joint	Hardness	Resilience	Welding ease	General purpose
Copper connector	good	higher	Relatively soft	higher	Difficult to weld	In situations with high requirements for ultra-high current
Pure nickel connector	average	high	Relatively soft	higher	Easy to weld	In high current situations
Iron nickel plated connecting piece	poor	poor	Harder	Low, easy to break	Difficult to weld	Low current and economical products
Aluminum nickel connector	better	average	Relatively soft	higher	Difficult to weld	Specialized for polymer battery cells

Note: The conductivity in the above table is calculated based on a thickness of 0.1 x width of 5mm x 100mm (length). When changed to a thickness of 0.2 x width of 5mm x 100mm or a thickness of 0.1 x width of 10mm x length of 100mm, the resistance value is half of the value in the above table.

different shapes can be customized

Summary: The higher the resistance of the conductive connecting piece, the greater the line loss generated by the connecting piece, and the maximum output capacity of the battery will be reduced. It may even generate heat during the operation of the battery pack, reducing product safety.