I have a dual mod it's the iJoy captain PD1865. I got the mod from a friend. I kinda understand moochs battery rating but still having trouble with which 18650 batteries to get I won't be exceeding 80 watts depending on what ejiuce I have I vape sometimes at 40 -50 watts & other times at 60-70 watts.
Step 1:
Your top wattage is 70, so we'll start with that and
calculate the CDR (continuous discharge rating) you need:
70 watts / 2 batteries / 3.2 volts (average mod cutoff) / 0.9 (board efficiency) = 12.2 amps (per battery)
This means you'll want batteries with a CDR of 15 - 20. You could get ones with a higher CDR, but you don't need it and they would have a lower capacity (they wouldn't last as long).
At 80 watts, you'd be up to 14 amps. That's getting uncomfortably close to 15 amps, so if you spend much time there at all you'd be better off with a 20 amp CDR battery.
Step 2:
Check
Mooch's chart for recommended 15 - 20 amp batteries.
Samsung 30Q - 15 amp, 3000 mAh
Sony VTC6 - 15 amp, 3000 mAh
LG HG2 - 20 amp, 3000 mAh
Samsung 25R - 20 amp, 2500 mAh
Step 3:
Check Mooch's list of good vendors.
www.akkuteile.de
www.batterybro.com
www.ecoluxshopdirect.co.uk
www.illumn.com
www.imrbatteries.com
www.liionwholesale.com
www.nkon.nl
www.orbtronic.comwww.rtdvapor.com
The reason it's so important to use a reliable vendor is because there are a lot of counterfeit batteries around. Mooch's list will substantially reduce your risk of winding up with a counterfeit. These are vendors Mooch is familiar with. There will be other good, reliable vendors out there, but if you (like most of us) don't have the knowledge and experience to identify them, Mooch's list is a great resource.
Step 4:
Buy batteries and vape safely!
If you've done much reading, you've probably heard about battery marriage. If you haven't, you need to buy your batteries in pairs (for a two battery mod). The pair should always stay together - they should go in the mod together and be charged together. You can use the pair in another two battery mod as long as they stay together, but you shouldn't split them up to use them in a one battery mod. The point is to make sure their experiences are as similar as possible so they'll age similarly and stay matched as they age.
By the way, Mooch's blog, as you've no doubt discovered, has excellent information but it can be a bit difficult to find all the details you're looking for. Baditude has posted a
superb introduction to batteries with a more methodical approach. Once you've covered the basics there, it's easier to browse Baditude's and Mooch's blogs to pick up some more advanced details.