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? Frequently Asked Questions Is there a warranty on the flashlights? I don't understand the amount I was charged for my Safety Discs. Comments 0 comments Article is closed for comments.