What is the ? (e.g., MacBook Pro 2021, Surface Pro 7)
Ensure you are using the original BatPower DC cable. Third-party cables often lack the gauge necessary to carry high wattage.
The ProE 2 is not waterproof. Keep it away from liquids.
Press the power button. If no lights flash, the unit is in "Deep Sleep" or empty. Recharge it for 30 minutes and try again.