Digital Displays/Indicators: Provide information on battery life, voltage, and operational status, making the device more user-friendly.
Durability and Weather Resistance: Rugged designs with impact-resistant and sometimes waterproof/dustproof (e.g., IP65 rated) housing to withstand harsh conditions.
Force Start Function: A button that overrides safety auto-detection for use on a deeply discharged battery (below 2V) that might otherwise not be recognized by the devic