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How long should it take to warm up?Updated 2 years ago

One of the most common questions we get about the BuubiBottle Portable Milk Warmer is "How long should it take to warm up?"

The answer is a little bit complex, but we'll break it down here.

Note: Breast milk is delicate. Simply put, heating too much or too quickly can easily destroy the valuable nutrients and immunological components that make it so beneficial. We intentionally designed the BuubiBottle Milk Warmer to gently warm breast milk and formula, protecting vital fats and nutrients.

Liquid volume, initial temperature, target temperature, and even ambient temperature all play a role in how long it takes to warm up. 

The table below outlines what you can expect from your device.

Liquid VolumeStarting TemperatureTarget Temperature1Time to Warm2Battery Life3
150ml (5oz)25ºC (54ºF)
12ºC (77ºF)
37ºC (98ºF)
37ºC (98ºF)
4 Minutes
9 Minutes
10.25 Hours
9.25 Hours
240ml (8oz)25ºC (54ºF)
12ºC (77ºF)
37ºC (98ºF)
37ºC (98ºF)
6.5 Minutes
14 Minutes
8.5 Hours
7.5 Hours
300ml (10oz)25ºC (54ºF)
12ºC (77ºF)
37ºC (98ºF)
37ºC (98ºF)
8 Minutes
16 Minutes
7.25 Hours
6 Hours


1. The recommended temperature for breast milk or formula is 37ºC (98ºF)
2. The examples here are all based on an ambient environmental temperature of 24ºC (75ºF)
3. Battery life listed is an approximation based on a full charge. Actual battery life may vary based on a variety of factors

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