Replacement Ni-MH Battery for Toshiba FT6503 Wireless Landline Phone (600mAh, 3.6V). Restore the power to your device with this reliable, high-quality replacement battery. Exact dimensions: 42.64 x 30.00 x 14.45mm. Compatible with several Toshiba models including FT6202, FT6203, FT6302, FT6305, and FT6505.