I Charge The VK Batts on The 901 Charger (USB Charger Broke).
You Can Charge The VK Batteries With The 901 Charger Same Threads.
So The 901 Atomizer Thread Fits VK Batt Threads, But The The VK's Design (Vent Holes Are In The Batt) Prevents It From Working on The 901 Batts, So No It Does Not Work.
Keep Vapin!