Cold batteries have a higher internal resistance and their load and capacity drops much faster, so the batteries need to be preheated in winter. The heated lipo battery case thus becomes an invaluable helper for the cold months. Compared to other lipo bags, this one has heating.
The heating is powered by an integrated controller, which can be powered by 3-6S batteries via the XT60 connector. The controller automatically stops heating if the supply battery is discharged. So you don't have to worry about accidentally draining your batteries too much. The USB connector located in the outer pocket is also practical, which can be used to charge a phone or HD camera. The cover itself is insulated and closes with a zipper to keep the heat inside.