How long does it take to fully charge a depleted battery? BB - CS December 15, 2017 16:54 For both the TC1200 and TC800, it will take up to 6 hours to full charge a depleted battery. Related articles How do I charge the battery for the TC1200? How long will the light last on a full charge with the Lithium battery? How many Lumens? How do I charge the battery for the TC800? Where is my RMA Number? Comments 0 comments Article is closed for comments.