Hello all - new to the forum. I recently purchased two Vaporesso Swag kits. One for myself and one for my wife. I purchased them both at the same local store here where I live. After using both mods for a few weeks I've noticed they both have different model numbers. SPCBAT9-2 is mine and TPCBAT9-2 is my wifes. Does anyone know what the difference is?