The HART 20V 3A Dual Port Fast Charger is the perfect tool quickly charging 2 HART 20V batteries in sequential order. The HART 20V Dual Port Charger charges 1 battery at a time in as little as an hour for each battery. The HART 20V Dual Port Fast Charger's LED indicator lights show battery charge status for quick and easy updates on battery charge, and indicates if your battery is charging normally. The integrated mounting hooks allows you to store the charger in a variety of ways for user convenience. The charger is compatible with all HART 20V Batteries. The HART 20V 4A Dual Port Fast Charger is covered by a 3-year limited warranty.