I do not want to sound like an <censored, I'm sure>, but if you're new to mechs, that is not the mod for you. The Timekeeper (and its brethren Able and Gyre and...) are hybrid topped mechs. As such, they require the use of an atomizer with a protruding center pin.
Next, continuing on my spree of <censored>ery, if you don't now the amp rating of your battery, you should not be messing with mechs at all. 18650 LiIon cells are almost always listed as 3.6 or 3.7 volts. The cells charge up to 4.2 volts and discharge down to around 3 volts. 3.7 is the nominal voltage. It's the amperage, however, that determines what build you can use. Knowing the amperage and the voltage, you can - using ohms law - calculate a safe resistance to use.
Put the mech back in its box, and put it on the shelf while you familiarize yourself with Ohms law, appropriate atomizers, and batteries.
Finally, a triple congratulations on picking a beautiful mech, and for coming here for advice before making what might have been a mistake, and for selecting an authentic battery (Samsung, Sony, LG, and a select couple Sanyo/Panasonic are suitable for our purposes, but there are a gazillion rewraps with false info on the wrap).
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