I'm looking to buy some batteries for my new mod -
I have the Wismec Gen3 with the Crown Valyrian tank -
Help?
I agree with Topwater Elvis. The choice for a regulated mod always comes down to the wattage you plan on using per battery. With regulated mods (with a chip set), coil resistance is irrelevant. With a mechanical mod (no chip set), the coil resistance and battery amp rating is relevant.
In the interests of keeping things simple:
If you use a good quality 20 amp CDR battery like the Samsung 30Q, or LG HG2, or Sony VTC6 then you are good for 60 watts per battery. If using a 2-battery regulated mod, you're good for 120 watts as you have two batteries. If you are using a 3-battery mod, you're good for 180 watts.
If you use a single 30 amp CDR battery like the LG HB6 you are good up to 90 watts; with a pair of 30 amp CDR batteries you could safely do 180 watts; with three up to 270 watts. Keep in mind all 30 amp 18650 batteries have only 1500 mah capacity, so they will last only half as long per charge as a 20 amp 3000mah battery.
30W-60W:
LG 18650HG2 3000mah 20 amp CDR
LG 18650HE2 2500 mah 20 amp CDR
Samsung 18650 30Q, 3000 mah 20 amp CDR
Samsung 18650-25R, 2500 mah 20 amp CDR
Sony 18650VTC6 3000mAh 20A CDR
Sony 18650VTC5, 2600 mah 20 amp CDR
Sony 18650VTC4, 2100 mah 23 amp CDR
AW 18650 3000 mah 20 amp CDR
30W - 75W:
Sony 18650VTC5A, 2500 mah 25 amp CDR
60W or higher:
LG18650HB6 1500mah 30 amp CDR
LG18650HB2 1500mAh 30 amp CDR
LG18650HB4 1500mAh 30 amp CDR
Try to limit your choices to the top manufacturers like AW, LG, Samsung, or Sony. And if you don't have a quality charger for your batteries, consider the Efest LUC V2 or V4. Good batteries deserve a good charger. Don't charge your batteries via the USB port except in an emergency.
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Guide to Choosing a Li-ion Battery Charger
Deeper Understanding of Mod Batteries Part 1
18650 Battery Safety Grades -- Picking a Safe Cell to Vape With