BK Radio Battery Eliminator for KNG P Series Charger Parts The replacement dual cups are

The replacement dual cups are compatible to charge the original OEM Li-Ion batteries or any of the upgraded Li-Ion batteries for these radios

so you can use a listen only earphone

the extended length of the antenna improves reception

Bendix King High Capacity BadAss Battery - Black

0c and lower see the KAA0732 software

BK Radio Battery Eliminator for KNG P Series Charger Parts The replacement dual cups areWHAT IS IT? Relm BK Radio Battery Eliminator, 1100 31002 500, comes with nonterminated wires for bench testing. Wire directly to DC power supply for even DC power supply. Recommended to use while running diagnostics on your BK Radio KNG P series radio using a service monitor. Rechargeable batteries don't always have the even current needed for accurate testing of radios. WORKS WITH: RELM BK Radio KNG P150, P150S and P150 command RELM BK Radio KNG P400