Currently looking for the best 18650 batteries in terms of capacity, preferably tested ones with confirmed mAh. I'm vaping on a 0.3 ohm build at around 50W so as-long as the batteries are 20A I should be good there, much appreciated everyone
20A will be fine if you stay below say 60w (per cell) on a regular basis.
At that level you'll be topping out at 3000mAh.
Have a look at Mooch's 18650 ratings chart, but it gets updated as new cells get tested and I know we have at least two new 3000mAh batts with very good ratings.
The old leader, the LG HG2, is no longer the best performer...
and it has been picked up by the counterfeiters so authenticity is dicey now,
and I consider the price premium too high for the small amount of extra runtime.
New and highly regarded are the Sony VTC6 and a Samsung, I think it's the 30Q but I haven't checked and they're are too many for me to track.
For myself, I only order from the half dozen or so of our trusted battery vendors.
Others are comfortable trusting Ebay etc. to save on shipping... I'll let them comment on that.
eta: I see I type too slow.