Click to expand Tap to zoom PROTON 18650 battery 3018mAH 2pk By BlackCell by Discount Vape 360 Sold out $16.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Sold out The Proton’s cell is capable of a 3000 mAh capacity, as well as producing a max discharge of 21A and a max charge current of 4A.