Ryobi ONE+ 18V Lithium-Ion 4Ah battery paired with a dual-port USB power source adapter provides a versatile portable charging solution for your mobile devices. This high-capacity battery pack features a fuel gauge to monitor charge levels, while the top-mounted adapter offers two USB-A ports (2.1A and 1.0A) for simultaneous charging of phones, tablets, or other small electronics. Designed for the Ryobi ONE+ system, this durable power bank setup is ideal for job sites, camping, or emergency backup power.