Amazon.com: Synergy Digital Battery Compatible for Panasonic HHR-4DPA/2B Cordless Phone Battery Ni-MH, 1.2 Volt, 1000 mAh - Ultra Hi-Capacity - Replacement of Pack of 4 AAA Batteries : Electronics
Amazon.com: 6PCS NI-MH AAA Rechargeable Battery for Panasonic HHR-65AAABU 1.2V Replacement Battery for Cordless Phone : Electronics
Amazon.com: Synergy Digital Compatible Cordless Phone Battery, Works with Panasonic P-P504 Cordless Phone, (Ni-CD, 3.6V, 600 mAh) Ultra Hi-Capacity Battery : Electronics
Amazon.com: 2PCS NI-MH Cordless Phone Rechargeable Battery for Panasonic HHR-P107A 3.6V 650mah Replacement Battery for Panasonic Cordless Type 35 DECT 6.5 : Electronics
Amazon.com: Kastar Type 31, NI-MH Rechargeable Cordless Telephone Battery 2.4V 1000mAh, Replacement for Panasonic HHR-P105 Cordless Phone HHRP105A : Electronics