Your Angell is equipped with two batteries to power all its daily functions. These electronic components are sensitive to temperature variations, especially at low temperatures.
Very low temperatures can slow down the functioning of the batteries.
The external battery's autonomy is more or less diminished depending on the temperature and the conditions of use.
Below zero degrees the internal battery discharges much faster. After a night outside, the internal battery may be completely discharged and will not recharge, even when riding. You will need to keep your Angell out of the cold to allow the battery to recharge through the external battery.
What are the precautions to take when temperatures are very low?
If you can, keep your Angell away from the coldest temperatures
Keep the internal battery level as high as possible. For example, you can place the external battery on the bike before riding (up to several hours) to allow the internal battery to recharge.