Yes, the Tornado Mega batteries are physically longer batteries than the Regular batteries and 1000 mah vs 650 mah respectively. Both work with the Tank atomizers and carts. They also work with the 510 attys and carts. The cone shaped Tornado adaptor used with the 510 attys is a cosmetic piece and not necessary for it to function. Both batteries work on TWs 510 chargers with the use of a thread adaptor they offer.
The Mega batteries come in manual and auto while the Regular is available in manual only.