Best Power Racing-Grade Dual-Voltage Regulator - THH-4059A

2. Best protection charging voltage 14.0V~15.0V

3. Best waterproof digital voltmeter

4. Best racing-grade horsepower

5. Best starting and acceleration the motorcycle

6. Pass the endurance test (water-proof, high temperature resistant)

7. Remove the battery after starting, the engine will not stall and can accelerate normally.

8. Give an external racing-grade electrical energy line.