Anker EverFrost comes with with 43L capacities, a detachable 299Wh battery for fast cooling, keeping food and beverages at 39°F (4°C) for up to 35.8 Hours
Anker EverFrost, with 53L capacities, can keep a temperature of 39°F (4°C) for up to 42, 35.8, and 27 hours respectively. This was tested with an ambient temperature of 77°F (25°C) and when the battery was fully charged.