This Ryobi OP403 lithium-ion battery charger can rapidly power up a dead battery, so users can spend more time working and less time waiting for a charger. An onboard status indicator monitors batteries as they charge, preventing damage and conserving energy at the same time. LED lights communicate to the user when batteries are charging, fully charged, and defective. Additionally, the OP403 offers USB charging capabilities, so users will never be stranded with a dead phone or MP3 player. Use this OP403 rapid charger to recharge Ryobi 40V li-ion battery models such as OP40401, OP4040A, OP1020A, OP1050A, and OP4026A (sold separately). Note: This charger requires 120V, 60Hz input power and uses the standard two-prong North American plug.