Replaced the NNTN8930A IMPRES 2 battery. The PMNN4547A is also an IMPRES 2 TIA4950 (IS / FM approved) IP-68 rugged battery for the APX6000 and APX7000 Series radios. The PMNN4547A has a higher capacity (3100 mAH Li-Ion) than the legacy NNTN8930A (2650 mAH Li-Ion).