!!
critical Everstart
Error Code Reverse Polarity Warning
The clamps are connected incorrectly to the vehicle battery terminals.
? What Causes This
Red (positive) clamp connected to negative terminal or black (negative) clamp connected to positive terminal.
✓ How to Fix It
Disconnect the clamps immediately when the continuous alarm sounds and reconnect them with correct polarity: red clamp to positive terminal, black clamp to negative or ground.
Source: page 1 of the official manual
From the manual
This error code appears in:
Everstart Jump Starter