U.S. Solid Pure Nickel Strip- 99.6% Nickel for 18650, 0.15x6x50mm Soldering Tab for High Capacity Lithium, Li-Po, NiMh and NiCd Battery Pack Battery and Spot Welding, 50 pcs - Amazon.com
Lithium Ion, 2pcs Pack With Solder Tabs replacement battery
Source 18650 li ion battery 3.7V 3000mAh 3200mAh 3350mAh rechargeable li-ion batteries with solder tabs, pins on m.alibaba.com