Immersive build, 12V high-capacity pack from Sony C6 high-drain cells — with a spot welder you need nobody, done in minutes

52 seconds, immersive: 3 Sony C6 high-drain cells into a Worx 12V battery, light taps on thin nickel strip, welds ‘a bit ugly’, multimeter reads 12.6V full, gaps filled with glue, 3.0Ah done

Making a Worx high-drain battery from three Sony C6 cells (specs shown). When spot welding, because the nickel strip is fairly thin, tap lightly, then tap again; the finished welds ‘look a bit ugly’; multimeter reads 12.6V, full; the gaps are filled with glue to hold it; Sony C6 3.0 (Ah) done. Comments ask how much the welder is and what brand, what glue (creator liked it), whether a 12V drill can use it; someone says this welder can’t do 26700, not even 1.0 nickel-plated steel strip; and whether a broken, unsoldered thermistor lead matters.

Outcome

Steps4 steps · click a frame to jump

1. 
   1. 3 Sony C6 cells into a Worx 12V battery

   Today three Sony C6 cells become a Worx high-drain battery; specs shown.

   00:00 – 00:12
2. 
   2. Light taps on thin nickel strip

   Tap lightly, then tap again; because this strip is fairly thin.

   00:13 – 00:27
3. 
   3. Welded (a bit ugly), 12.6V full, glue

   The finished welds look a bit ugly; multimeter reads 12.6V, full; gaps filled with glue.

   00:26 – 00:38
4. 
   4. Done: Sony C6 3.0

   Is the pressure right; the Sony C6 3.0 is done.

   00:45 – 00:52

Bill of materials

Measured on camera

Creator’s tips

• Tap thin nickel strip lightly, don’t press hard 00:13
• Fill the gaps with glue to hold the cells 00:26

Pitfalls

• Comment: this welder can’t do 26700, not even 1.0 nickel-plated steel strip

Li-ion safety

Quotes

Cost & time