Toshiba 3.6V 600mAh Rechargeable NiCad Battery White Cordless Phone TRB-8000 Toshiba 3.6V 600mAh Rechargeable NiCad Battery White Cordless Phone TRB-8000. Material: Plastic. Material: Metal. Exact item size plus or minus 1/4 inch - 2in length x 1.75in width x 0.55in height. Country of Manufacture: China. Feature: Part Number: TRB800036600. Feature: Eco-Friendly.