Since 1965 Lenmar has been building award winning, high quality power related products. Lenmar personally manages the excellence of our products through every aspect from design to production. Fits: AT&T - Lucent Technologies 84021, RadioShack 43-8025, Sony SPP-9104, SPP-A2470, SPP-A2740, SPP-A9171, SPP-S9000, SPP-S9001M, SPP-S9101, Sprint 89336 Replaces: Sony BP-T31, Sprint 89336 Specifications: Voltage: 3.6V Capacity: 1200mAh Chemistry: Nickel-Metal Hydride Warranty: 1 Year