LITHIUM ION RECHARGEABLE BATTERY FOR RDU & RDV SERIES – RLN6351B STANDARD CAPACITY LITHIUM ION BATTERY REPLACES ANNUALLY FOR BEST RELIABILITY. 1100 MAH PROVIDES UP TO 12 HOURS OF SERVICE (ESTIMATED ONLY, WITH “BATTERY SAVE” FEATURE “ON” BATTERY CAPACITY WILL DIFFER DEPENDING ON THE RADIO MODEL AND/OR REGION). ALL BATTERIES ARE EASY TO CHARGE AND SLIDE ON TO LOCK SECURELY. FOR USE WITH RDU2020, RDU2080D, RDV2020 OR RDV2080D.