The cooling duration of the Godrej InsuliCool Portable Insulin Cooler can vary depending on the model, outside temperature, charging status, frequency of opening, and travel conditions. It is designed to help maintain a safe temperature range for insulin during travel and generally requires a continuous external power source, such as a compatible power bank, car adapter, or charging adapter, to ensure uninterrupted cooling. The manufacturer does not clearly specify fixed backup hours without power input, so the exact duration should be confirmed from the official specifications or user manual for the specific model. For long trips such as 36 hours, it is important to ensure proper charging arrangements, backup power, and temperature monitoring throughout the journey. It's best to consult your diabetologist or an endocrinologist to confirm that your insulin storage during travel meets safety needs and to get personalised advice on insulin cooler options and power requirements.