Iridium Replacement Li-Ion Battery f/9575Replacement Li Ion Battery for 9575 The Iridium Extreme 9575 Satellite Phone Battery is specifically made for the Iridium Extreme 9575 Satellite Phone. Whether used as a spare for extended travel, or a replacement for the battery that came with your satellite phone, it maintains the rugged watertight seal that the Iridium Extreme is known for. Features: Rechargeable Li ion Battery Battery life: up to 4 hours of talk time; 30 hours of standby 3. 7 V,