How long does it take for a water bottle to thaw?

It depends on the size and material of the water bottle, as well as the ambient temperature. Typically, it can take anywhere from a few minutes to several hours for a water bottle to thaw. To speed up the process, you can place the water bottle in a warm room, near a heat source, or even run warm water over it. If the water bottle is glass, you should be cautious not to heat it too quickly as it could cause the glass to crack or shatter.