The Grainger 16YP40 is a Yale YP40 forklift battery charger. It is designed for indoor use and charges 36 or 48 volt batteries. This fully automatic battery charger provides a charging rate of 40 amps and is compatible with all Yale forklift models using 36 or 48 volt batteries. The charger plugs into a standard 120 volt outlet and features an LED display, integrated cord wrap, and impact resistant housing. Safety features include protection against reverse polarity, AC power interruptions, and overcharging. This durable and reliable battery charger is ETL certified to UL and CSA safety standards.