The UPS is called an Uninterruptible Power Supply because in the event of a power failure, it can quickly switch to "inverter" mode, so that the computer in use does not lose important files due to a sudden power failure. Not to be used as a backup power source. If you just want to be able to use electricity in the event of a power outage, just buy an inverter. General household UPS batttery is mostly used in the maintenance free lead-acid battery.
1. when floating charging, please use the charging voltage of 2.275V/ single cell (set point at 20℃) for constant voltage charging or the current below 0.002CA for constant current charging. When the temperature is below 0C or above 40C, it is necessary to correct the charging voltage. With 20C as the starting point, every change of one degree, single cell voltage changes -3mv.
2. During cyclic charging, the charging voltage is 2.40-2.50V/ single cell (set value at 20℃) for constant voltage and voltage charging. When the temperature is below 5C or above 35℃ for charging, the starting point is 20℃, and the charging voltage is adjusted to -4mv/ single cell for every change of one degree.
The initial charging current should be controlled below 0.25CA.
The charging capacity is set to 100-120% of the discharged power, but 120-130% when the ambient temperature is below 5C.
The lower the temperature is (below 5C), the longer the end time of charging, and the higher the temperature is (above 35C), its more likely overcharging will occur. Therefore, especially for recycling use, it is better to charge within 5C~30C.
To prevent overcharging try to install a charging timer, or automatically switch to trickle charging mode.
During charging, the battery temperature should be controlled within the range of -15C to +40C.
