Cordless Phone Replacement Rechargeable Ni-MH 2000mAh Battery Pack, Compatible with Panasonic Original Manufacturers Part OEM No. P511 PP511 P-P511, 2-Pack Purchase includes: Two (2) battery packs for (2) cordless phones. This battery pack replaces original manufacturers part number P-P511. Also replaces the following battery packs: P511 PP511. Also replaces the following battery packs, which are designations by other battery companies: TYPE 24, BATT-511, 174596-BATT-511, CPANP511N101, P-P511A, CB0511, HHR-P402, PQPP511SVC. Features and Specification: Voltage: 3.6V; Chemistry: Nickel-Metal Hydride (Ni-MH); Capacity: 2000mAh; Battery Pack Composition: (3) Ni-MH 1.2V Size AA batteries; Manufacturer: PKCell; Manufacturers Part No.: PK-0050 Compatibility: This Ni-MH 2000mAh Battery Pack fits the Panasonic phone models below: