Direct Replacement: Polycom SoundStation 2 and 2W Replacement Battery (Extended Capacity) replaces 2200-07804-002 and 2200-07804-003 batteries. Advanced Lithium Ion: Rechargeable battery pack with Japanese-made 7.4V lithium-ion cells for reliable performance. Extended Capacity: 5200mAh rating, 18% higher than OEM batteries, ensures longer usage times. Premium Quality: Manufactured by Artisan Power, a leader in high-quality replacement battery packs.