Replacement battery fits 9 Radio Beacon compatible models. Specifications: 14000mAh, 7.2V, Li-ion. Compatible with: SAR-9, NBB-441, JQX-30A, FT501, ESR06, CRT100 and 3 more compatible models. Replaces: Radio Beacon 2ER34615M, Radio Beacon A3-06-2613. Radio Beacon replacement battery designed for Marine Safety & Flotation Devices devices. A direct drop-in replacement for the original battery.