DYMO Rhino Rechargable Nickel Cadmium Battery for 4200 and 5200 Series Portable Hand Held Thermal Transfer Labeling Systems provides extended battery life.Rechargable Lithium-Ion Battery for 4200 and 5200 Series Printer features include: Rechargable via optional AC Adapter Long Life Lithium-Ion Battery Technology Order Qty of 1 Below is more info on our Rechargable Lithium-Ion for 4200 and 5200 Series Thermal Transfer Printers