I charge mine every night i get home and take it off charge when i wake up to go to work.
But i always carry these with me..
https://www.amazon.com/gp/product/B009V5X1CE/ref=oh_aui_detailpage_o02_s02?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B004NO0L4O/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1
The good thing about this setup is, once the thermal is charged the charger with shut off and your good to go.
