Buy together
Welding Al–Ni Bimetallic Contact Pads onto a 21700 Cell (Laser Welding)What we do: laser-weld a bimetallic aluminum–nickel pad onto the cell…20₴+ у кошик
90₴
21700 Tesla Battery Cell (salvaged) 4.0–4.2 Ah / 14–15 mOm, in heat shrink with insulating ring
Battery CellsOrigin: recovered from disassembled Tesla battery packs
Form factor: 21700
Capacity: 4.0–4.2 Ah
Internal resistance: 14–15 mOhm
Insulation: new heat-shrink wrap + insulating ring on the positive terminal
Quality control: 100% of cells tested and sorted by capacity and internal resistance
Service: laser welding of bimetallic aluminum–nickel contact pads for soldering and spot welding — 20 UAH per cell
Made to order
Description
21700 cells recovered from disassembled Tesla battery packs. Each cell has a new heat-shrink wrap and an insulating ring on the positive terminal and is ready for assembly. 100% of cells are tested and sorted. This group has a capacity of 4.0–4.2 Ah and an internal resistance of 14–15 mOhm. Use cells from the same group in one battery pack so the cells work evenly and charge equally. The lower the internal resistance, the better a cell handles current and the less it heats up. In a pack built from identical cells, the difference between adjacent resistance groups is small. What matters is that all cells in the pack come from the same group. For convenience, we can laser-weld bimetallic aluminum–nickel contact pads onto the cells. These pads make it easy to solder wires and spot-weld nickel strip. The service costs 20 UAH per cell.
There are no reviews yet.