Replacement Battery for Poly Savi 7300 & 7400 Series Wireless Headsets Rechargeable Lithium Ion Polymer (Li-Ion) battery Adaptive power control to maximize user density Up to 13 hours talk time, up to 52 hour stand by time Full charge in 2 hours Not compatible with other Poly wireless headsets Genuine Poly accessory BTP Model: PL-217400-01MFR Part: 217400-01, 784P8AA
