Rereading your post seems you already have a mech mod, but anything else.
You will need:
- A 18650 lithium ion battery. Probably 2 or 3 units. You should look for "IMR 18650" on google. Efest, AW, Panasonic, Sony, ... those are known good brands.
- A battery charger for lithium (AA chargers are not compatible!)
- A resistance (ohm) tester for e-cig builds
- A atomizer with 510 connector (but not ego-compatible or threaded)
I don't know if you will prefer to start with a VW device as i posted before. But anyway you should see what's inside a "starter kit" to get an idea:
$45.49 Tesla Variable Voltage/Wattage APV Starter Kit - 3.0-6.0V / 3.0-15.0W / 1*18650 at FastTech - Worldwide Free Shipping
There you can find: 2 batts, the lithium charger, the VW device and a clearomizer. That's all you will need to start. In your case you'll end with your AR mod clone instead of the VW device, and tih an RDA instead of the clearo.
First of all, be carefu: Lithium-Ion batteries should be handled with care. They can explode (and it will if you don't use them properly).
Some advices on batteries:
- Even if they seem like an AA Ni-MH, they are not compatible in any way. Chargers and any devices that are meant for AA batts SHOULD NOT be used with lithium-ion or viceversa.
- Lithium-ion give 3.7 Volts typical. It goes from 3.3 to 4.2v.
- They contain a lot of energy. If short circuited, they can blow up.
- As any other battery, it should not be used in reverse polarity.
Mechanical mods:
They are a simple piece of metal, a tube which holds the battery and connects it directly to the atomizer when connected.
A device with VW (as the ones i posted) is the same but it has protections inside, and you can select the voltage or wattage. Those devices control how much energy is given to the atomizer.
A mechanical mod will give energy depending on the atomizer. So if you want more clouds you have to recoil it with lower ohms, and try again. With VW you can go up and down at every time clicking the (+) and (-) buttons.
Mechanical mods work even with the battery placed in reversed direction. You shouldn't do this because there are security issues. Negative pole of the battery should be near the button, and positive pole near of the atomizer.