Axiom 4Pack Ni-MH Rechargeable Battery For VTech BT162342 BT262342 BT166342 BT266342 Long-Lasting Axiom Ni-MH Rechargeable Battery Capacity (Power): 850mAh. Greater "mAh" represent the power of the battery and provides more talk time. Brand New: Axiom Rechargeable Ni-MH Battery Package Includes: 4x Axiom rechargeable cordless-phone Batteries