To charge refillable cartridge is necessary:

  Ink, syringe,  used original cartridge with chip

 Move chip from the original cartridge to rechargeable

 (with knife or needle).

 Be careful not to damage the chip.

Remove air label.

Check the air hole for the remaining glue from label.

(In the case of remanence clean with needle).

Replace shipping clip and reload the cartridge (10 ml ink).

The ink should penetrate into the sponge on the entire volume.

Close the filling hole.