Yes, it is normal. When the power level flashes, it means the power level. When it back to be stable, it means the electric quantity Was this article helpful to you? Related Articles Can I use Zapper while taking medications? Can MicroGen help fix histamine intolerance? When the length of the TENS cable is not enough, what should I do? Does HeaWea MicroGen support other accessories besides contact mode? When we load new frequencies into HeaWea MicroGen, will it overwrite the previous frequencies? Are HeaWea MicroGen programs free? heaweasupport Posts Website Leave a Reply Click here to cancel reply. Name (required) Email (will not be published) (required) Website Comment