Battery life is always a big question with any smartphone, and this is one area most phones can't compete with the DROID Turbo 2.
Motorola could have added a bigger battery to the Moto X, but kept it down to 3,000 mAh to keep the cost down, and also probably because the DROID contract with Verizon. As a result the huge 5.7-inch Moto X only has a 3,000 mAh battery with fast charging, and no wireless charging. It still has great battery life, but not "DROID" battery life.
The DROID Turbo 2 is much bigger, coming in at 3,760 mAh, and it supports both fast and wireless charging technology. That means it will last longer, go from 0-50% in under 30 minutes, and can charge with wireless technology.
Motorola claims the DROID Turbo 2 will last for 48 hours, which will be only possibly with very light usage, but there is no denying it has a massive battery and some impressive specs and features on board.