BFKK
BFKK 21.8 KW Capacitor Spot Welder 2-in-1 Automatic Foot Pedal
A 21.8 kW capacitor spot welder with automatic and foot-pedal modes, 999 adjustable gears, and a 60 cm flexible lead for 18650, 14500, 21700 and LiFePO4 cells
- Ready to weld in 5 minutes via 100-240V input
- Automatic and foot-pedal modes for flexible operation
- 8 kW pulse power from dual super-capacitors
- 999 adjustable gears cover 18650, 21700, LiFePO4 and sheet metal
- 60 cm flexible leads with 6 replacement pin pairs included
Capacitor spot welder for lithium packs
The BFKK 21.8 KW unit uses dual super capacitors to deliver a maximum pulse power of 21.8 KW for building 18650, 21700, 14500 and LiFePO4 battery packs. It accepts a wide 100-240 V input and reaches welding readiness in about five minutes, indicated by an OK display. The MOS circuit is designed for stable, sustainable operation without tripping.
Dual-mode operation and bundled consumables
Automatic mode lets you set one of 999 gears and weld immediately by inserting the pen, while foot-pedal mode adds a two-metre pedal for precise probe positioning before each pulse. The package includes a 15 A charger, 60 cm flexible leads with six pairs of replaceable pins, a five-metre roll of 0.15 mm nickel-plated sheet, an 18650 holder and a file so work can start straight away.
Portable build with replaceable probes
The lead wires stay cool near hand temperature even during continuous high-gear use and bend freely without dragging the main unit. Pins can be swapped in seconds when worn, and the compact chassis handles materials from 0.2 mm copper up to 0.8 mm nickel-plated, stainless or iron sheet. No internal fan or liquid cooling is described, so extended sessions rely on the capacitor design alone.
Highlights
- Ready to weld in 5 minutes via 100-240V input
- Automatic and foot-pedal modes for flexible operation
- 8 kW pulse power from dual super-capacitors
- 999 adjustable gears cover 18650, 21700, LiFePO4 and sheet metal
- 60 cm flexible leads with 6 replacement pin pairs included
Specifications
No published specifications for this item yet.
Questions about this item
How often will the welding pins need replacing on this BFKK 21.8 KW spot welder?
The kit includes 6 pairs of replacement pins for the detachable welding pen leads, which are designed to be swapped out as they wear during regular use.
What limits continuous high-gear welding on this 21.8 KW capacitor spot welder?
The 60 cm welding pen leads stay near hand temperature even during sustained high-gear operation, and the unit uses a 15 A charger with 100-240 V input for consistent power delivery.
How much noise or heat does this BFKK spot welder produce when running all day?
The welding pen leads remain close to hand temperature during continuous high-gear use, and the MOS circuit design prevents tripping for stable, sustainable operation.
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