Nano2 Instructions

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Welcome to the nano2 instructions page. Below you will find the information you need to get started.

What’s in the Box

In the box you will find the nano, a capacitor box, some welding tips, 0.15mm pure nickel strips, 0.1mm nickel plated steel strips, heatshrink tubes to re-wrap a few cells, and any extra accessories you may have ordered.

Charging up the Capacitors

Charging the capacitors can be done in three ways. The first is using the 18650 slot, the second is using the USB port (very slow), and the third is plugging a power supply to the XT60 port in the back of the cap box. If doing so, you should have a CC power supply that you tested to be no more than 9V. Anything more than that could cause the capacitors to vent and stop working.

If you are using the USB port, it will be incredibly slow. This is more meant to charge the 18650, but we wanted to make sure that anyone could charge it up regardless of what kind of tools they had available, so it’s there just in case. If you are using the USB, then the little switch also comes into play (more on that below).

If you are using an 18650 to charge up the caps, you will get a slow but reliable charge. The DC-DC circuit it is attached to was designed specifically to charge these caps. Most cells should handle the current just fine (roughly 3A). If you are using a battery, just flick the switch back and forth once. This is a little quirk that comes from a design flaw, the switch circuit protects from reverse polarity and does a soft start to avoid blowing the DC-DC chip. These features work just fine, but you just have to flip the switch back and forth instead of simply turning it on or off. If you want to turn it off, you have to remove the battery.

How to Use the nano2

You’ll find a quick video on how to use the nano2 below.

Nano2 Attachments

Clamp Tip:

Fuse Tip:


My nano2 is getting very hot and I can’t hear my fan: At first we were not gluing the fan wire down and sometimes it moved in the way of the fan. This can also happen if shipping was particularly rough. Just move the wire so it does not interfere with the fan. Please don’t use metal to do this to avoid accidentally shorting out something.

Open Sourced Files

That’s right, the nano2 is open sourced. The license is CC-BY-NC-SA 3.0 which means you can use it for non-commercial use but you have to keep the same license on what you use and you have to reference it. If you are looking for a commercial use, please contact us. The goal of sharing these files is for learning, serviceability, and future improvements. We don’t offer support on using these open sourced files and any modifications you make are at your own risk. Fabricating the parts is also at your own risk as you may use different material specifications from what we used.

Nano2 core FET board:

Nano2 control board:

Nano2 cap board:

Nano2 battery board:

Nano2 DC-DC board:

Nano2 STL: