Have this product ordered from Amazon and the seller sent me a Tokondo simply another battery. Annoying. Easily refund. Still ne impudence. The 18650 then I have purchased from the dealer around the corner for 4.80 apiece. So cheaper than here. Works 1A and the capacity is sufficient for me to loose 2-3 days. Use the Smok Box 50 Watt with Nautilus 1.8 ohms at 8 watts and from time to time the Atlantis with 0.5 ohms at 26 watts. Conclusion: Product tip, Preiss too high, sellers Tokondo bad, Amazon customer service outstanding.