Motorola NNTN7687A Adapter for APX Batteries in The Existing XTS Single-Unit Charger, WPLN4111 (Black) his adapter allows users to charge APX batteries in the existing XTS single-unit charger This charger insert is only compatible with chargers that have been loaded with software version 3.4 or greater. Compatible: APX 8000, APX 7000, APX 7000XE , APX 6000, APX 6000XE, SRX 2200 batteries