Online monitoring system for service life of battery of elevator emergency rescue device

The invention discloses an elevator emergency rescue device battery service life online monitoring system which comprises an emergency rescue device, an elevator mainboard, an Internet of Things module, a server and a display terminal, and is characterized in that the emergency rescue device comprises a battery and a detection module used for detecting a battery fault and outputting a signal of the battery fault; the elevator mainboard comprises an I/O interface connected with the detection module through a passive contact, the elevator mainboard is electrically connected with the Internet of Things module, the elevator mainboard transmits signals to the Internet of Things module, the Internet of Things module transmits the signals to the server, and the server transmits the signals to the display terminal through a wired or wired network. The system can send a fault signal to a mobile phone of a maintainer in time to remind the maintainer maintain the elevator emergency rescue device in time. 本发明公开了一种电梯应急救援装