Reference Manual - Segway

Charging in Hot or Cold Temperatures
Your Batteries should be within the recommended charging
temperature range prior to and during charging.
For the recommended Battery charging temperature range,
see “Temperature Ranges” on page 63.
The Batteries will charge most efficiently when they are nearest the
center of the recommended charging temperature range.
If your Batteries are too hot or too cold, they may take longer to
charge, or they may not charge at all.
If you are concerned that the Batteries may be too cold or
overheated during charging, see “Charging Failures” on
page 70.
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