Notes: Baby monitor rechargeable batteries will not last forever, the average battery lasts for 1 to 3 years. If the battery is old/dead, it will not accept charging. But it is not the problem of charger or charging cable. USB Single Port Wall Adapter Input: AC100-200V -50/60Hz 0.3A (global input voltage) Output: DC5V/2000mA (max 10W) Size: 1.77*1.37*0.9 inch Weight: 28.8g Color: Black USB 2.0 A Male to USB Type C Connector Cable Output: 5V/3.1A Length: 1.5M/5ft Color: Black Compatible devices: -VTech RM5754, RM5754HD, RM5754-2HD 5-Inch Color LCD Smart Wi-Fi Baby Monitor -VTech RM5764, RM5764HD, RM5764-2HD 5-Inch HD WiFi Video Baby Monitor -VTech RM5864, RM5864HD, RM5864-2HD 5-Inch HD WiFi Video Baby Monitor -VTech RM7754, RM7754HD, RM7754-2HD 7-inch Smart Wi-Fi 1080p Video Monitor -VTech RM7764, RM7764HD, RM7764-2HD 7-inch Smart Wi-Fi 1080p Pan and Tilt Monitor