This both are high drain batteries and of course unprotected like any other high drain battery on the market. But they are really shotz (round about 65mm) and perefct for modders and vapors.
LG18650 3.6V 2500mAh Rechargeable Li-Ion Batteries (2-Pack) 30A continuous discharge / 35A peak discharge. Price: $14,69 (save 5% more with BLF) My link - non aff-link
US18650VTC5 3.6V 2600mAh Rechargeable Li-Ion Batteries (2-Pack) 30A continuous discharge / 60A peak discharge. Price: $15,33 (save 5% more with BLF) My link - non aff-link --> Sold out at the moment. I think many people want these and FT has only a few. Visit the page in a few days, maybe it will be in stock. It was the same with the Sony VTC4 (with only 2100mAh).