1 Clean the welding parts by a knife or rasper2 because tin anode materials difficult, the best wear away3 in order to prevent heat damage to the battery, the battery to use wet cloth wrapped up4 with solder wire against batteries with one hand, a hand up with enough temperature soldering iron welding, for the battery anode tinThe effect of the tin after cooling, how do you weld 18650 lithium battery by soldering iron: Lithium-ion battery has light weight, large capacity, no memory effect, etc, so it has wide application.