There is a UPS head, the output power capacity of 4200 watts / 6000VA, full load efficiency of 92%. The The 16 12V battery. The Now need to bring all the equipment, the sum of power is about 2800W, requires two hours. The Ask the battery about how much A's. The In addition, if the parameters are complete, the device requires a charge 2H, how to count the required battery capacity and quantity?
{Voltnage x time (must be hour)} / battery shutdown voltage = battery capacity, the number of voltammetry is your 6000VA here, not the number of W, power is W number / voltnumber = 4200W / 6000 = 0.7, if loaded with 2800W, then the number of volt is 2800 / 0.7 = 4000VA, the battery shutdown voltage of 10.5V per cell calculation. So (4000VAX2H) /16X10.5=47AH, so you here with 47AH battery can, but should not 47AH this type of battery, 65AH down. It is best to use 16 12V / 65AH battery.
65AH battery 16 sections enough for your request to live for 2 hours
UPS full load standby 2 hours, the battery with 65AH battery! 16 only!
