For 18650 LiFePO4 cells, nickel strips with a thickness of 0.15mm are commonly used. However, the thickness can vary from 0.1mm to 0.3mm depending on the specific requirements of your battery pack. It’s important to note that most low-cost welders have a hard time around 0.15mm, and most cannot even work with 0.20mm, even on the highest settings. Therefore, it’s crucial to consider your welding equipment’s capabilities when choosing the nickel strip thickness for your battery pack.

Nickel Strip User Guide for 18650 Battery Packs
MaterialColumnWidth(mm)Row Space(mm)Thickness(mm)Cell Holder
Nickel Strip1718.50.12/0.15/0.2N/A
Nickel Strip225.518.50.12/0.15/0.2N/A
Nickel Strip34418.50.12/0.15/0.2N/A
Nickel Strip462.518.50.12/0.15/0.2N/A
Nickel Strip58118.50.12/0.15/0.2N/A
Nickel Strip699.518.50.12/0.15/0.2N/A
Nickel Strip711818.50.12/0.15/0.2N/A
Nickel Strip8136.518.50.12/0.15/0.2N/A
MaterialColumnWidth(mm)Row Space(mm)Thickness(mm)Cell Holder
Nickel Strip1720.20.12//0.15/0.2Yes
Nickel Strip22720.20.12//0.15/0.2Yes
Nickel Strip34720.20.12//0.15/0.2Yes
Nickel Strip467.620.20.12//0.15/0.2Yes
Nickel Strip587.820.20.12//0.15/0.2Yes
Nickel Strip610820.20.12//0.15/0.2Yes
Nickel Strip7128.220.20.12//0.15/0.2Yes
Nickel Strip8148.420.20.12//0.15/0.2Yes