What are the reasons for the fire of Shuangdeng UPS batteries

The virtual connection of cable joints causes excessive contact resistance, and when the temperature rises, the contact surface oxidizes severely, which in turn causes the contact resistance to continue to increase, ultimately leading to electrical ignition or even arcing, igniting nearby combustibles and causing a fire.
Short circuit accidents occur in UPS backend circuits, switches, or loads, causing internal fires in UPS batteries or explosions of high-power components.
The installation site of Shuangdeng batteries has severe metallic dust, which is sucked into the UPS machine through the cooling fan of the UPS. When the concentration reaches a certain value, it can cause internal fire in the UPS.
The connecting cable of the Shuangdeng battery was scratched by the iron sheet of the battery cabinet when entering and exiting, causing a short circuit in the insulation layer.
The handling method for short circuit of Shuangdeng UPS battery:
Reduce the charging current, lower the charging voltage, and check if the safety valve body is blocked. Regular charging and discharging. The float charge voltage and discharge voltage of lead-acid batteries in UPS power battery systems are often calibrated to their rated values at the factory, and the discharge current increases with the increase of the load. Therefore, the load should be adjusted reasonably during use, such as controlling the number of electronic devices such as computers.
When installing lead-acid batteries, insulation measures should be taken for the tools used. When connecting wires, the electrical appliances outside the battery should be connected first, and after inspection, there should be no short circuit. Finally, the battery should be connected, and the wiring specifications should be well insulated to prevent cracking caused by overlapping pressure.
The above are the reasons and solutions for the short circuit of UPS batteries in Shuangdeng. In daily use, it is necessary to strictly follow the requirements for UPS battery use and do detailed maintenance work to better prevent short circuits in UPS lead-acid batteries, making lead-acid batteries safer to use and have a longer lifespan.