Both same battery type. Neither will charge. 1998 Sony 900 MHz Cordless Phone. Charge light is off with green although handset beeps when removed from cradle with green. Yellow light stays on (
Sony SPP-A40 10-Channel Cordless Phone with Answering System | Unboxing - YouTube
Scavengedluxury — design-photographs: Sony Cordless Telephone -...
Sony Cordless Phone SPP-100 (1986) | Cordless phone, Old phone, Phone