Lithium-ion (Li-Ion) cells represent the latest in mobile battery technology. They offer higher power-to-volume and power-to-weight than their nickel metal hydride and nickel cadmium counterparts. Zebra utilizes Li-Ion technology in its newer RW 420 printer.2F59402. 9402. Zebra technologies Zebra technologies Zebra Four-Cell Battery for RW420 Portable Printer - AK17463-005.