What does the blinking white light mean?

When your DubCharge blinks white on the main button, this means the cartridge is too tight and will not work. To fix this, slightly unscrew the cartridge and then try again! When you over-tighten a cartridge on a battery this results in the threads being worn down. Please get in touch with our customer care team if you do continue to experience problems, and we'll help you out.