Replacement 3.6V 600mAh Ni-MH Battery for Sony SPPA110 Cordless Phones. Get your vintage Sony cordless phone working like new again with this reliable Ni-MH replacement battery, featuring 600mAh capacity (2.16Wh) and precise dimensions (42.64 x 30.00 x 14.45mm) for a perfect fit. High-quality power source designed to meet or exceed original specifications.