3.6v 1500 MAH 3xAA Battery - Best cordless battery
HHR-4DPA/4BA - Panasonic Rechargeable AAA's for Cordless Phone. 1.2V NiMh (4-pack) - Vancouver Battery Corp
Kastar HHR-P104 Cordless Phone Battery, Ni-MH, 3.6 Volt, 1000mAh Ultra Hi-Capacity, Replacement for Panasonic HHR-P104 HHR-P104A and Sony MDR-RR800/900 Series Rechargeable Battery | Walmart Canada
6PCS HHR 55aaabu AAA Ni-MH Battery 1.2V for Panasonic Phone Rechargeable Battery for Cordless Phone : Amazon.ca: Electronics