Vapcell S4 Plus:
I got mines a few days ago. It took me a while to figure it out.
1. Small switch located on right side, Manual mode.
2. When the cell is in the slot and the charger is plugged into power, press and Hold down the Mode button for two or three seconds, and continue to hold the button down.
3. Then you can press the current button button to cycle through the various amp levels, when the current number is flashing. Release both buttons when your choice appears.
4. For multiple cells, press the Display button to select the next slot, then repeat steps two and three. You can select different amp charge currents for different slots. Also, this charger fits 21700 protected usb cells. I bought four S4, for my two GT 94s' and MF05 and MT90.
