The TOPDON Tornado 90000 Power Supply and Smart Battery Charger is a professional-grade smart charging tool suitable for all types of 12V and 24V lead-acid batteries, with a wide capacity range from 5A to 90A. It comes with six charging modes, two adjustable charging currents, and supports ECU programming. The Tornado 90000 provides safety features including built-in protection against reverse polarities, reverse charges, short circuits, overheating, and over-voltages.