How to solder lithium batteries on circuit boards

How do you solder a battery to a circuit board?

Use tweezers and hold each wire to control its movement and ensure it doesn't short. If you're desoldering a battery from a circuit board, use flush cutters to cut each wire one-at-a-time to isolate the battery before you desolder the wires. Whenever possible, create an indirect path by soldering connectors onto the battery and the circuit board.

Can You solder a lithium ion battery?

Never solder on devices that are powered on or plugged in. Unplug, turn off, and remove power sources before soldering. Don't solder directly to hard-shell lithium-ion batteries (such as 18650 cells). The heat from the soldering iron will damage the battery internals. Use a battery spot welder instead.

Can a battery be soldered directly to a board?

DON'T SOLDER DIRECTLY TO BATTERIES! The correct solution is C, with a holder for the cell soldered to the board. Do try to solder directly to the ends of the cell. Most batteries "don't like that." Lithium cells go further, and will actively protest against being soldered on.

Can You solder a lithium ion battery with a spot welder?

Don't solder directly to hard-shell lithium-ion batteries (such as 18650 cells). The heat from the soldering iron will damage the battery internals. Use a battery spot welder instead. Be extremely careful if you're soldering/desoldering lithium-polymer battery wires!

How do you solder a battery with a soldering iron?

“Tin” both sides of the batteries with a small amount of solder, allowing it to cool down before soldering the wires. Keep the time your soldering iron touches the battery terminals to a minimum. The longer the iron is in contact with the battery, the more heat will build up.

How do you solder a Li-ion battery?

Use high-quality solder with a flux core and avoid using additional acid-based flux (solder paste), as it can corrode the connection or battery over time. See my solder recommendation here. Before soldering, it’s best to discharge the Li-Ion battery down to 3V.

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How to solder lithium batteries on circuit boards

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batteries

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About How to solder lithium batteries on circuit boards

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