The Shure SB900A is a lithium-ion rechargeable battery that works with PSM300 (P3RA only), PSM900 (P9RA only), PSM1000, UR5 Portable Diversity Receiver, QLX-D Digital Wireless Systems, ULX-D Digital Wireless Systems and Axient Digital (AD1 and AD2 only). The SB900A replaces the SB900.
PLEASE NOTE: Since this product is a Lithium Ion Battery and due to FAA regulation, this item is restricted to ground transportation in the lower 48 contiguous states and cannot ship to Alaska, Hawaii or Puerto Rico.