Battery should be purchased and installed separately.
Powering time is depends on the plugged loads and battery capacity , for example:
1*100AH 12V Battery
Watts Minutes
2000 20
1500 30
1000 60
400 200
200 300
(UPS)chargers/inverters/automatic switch are all-in-one units that combine a power inverter, a battery charger, and a transfer switch into a single unit.
MODEL: HRU-2000
Continuous Power(W): 2000
Wave Form: : modified sine wave
Operating VoltageDC): (21v±0.6v)-(31±0.6v)
Rated Voltage(DC): 25.6v-26.4v
Rated Voltage(AC): 100v-125v
Output Frequency: 48-52Hz
Conversion Efficiency: not less than 85%
Static Current: 0.5A
Low Input Voltage Warning: 20.4v-21.6v
Low Input Voltage Shut Off: 18.4v-19.6v
Over Input Voltage Shut Off: 30v-33v
Charge Current: 8a+-5%
Transfer Time: 20-50ms
AC Plug/Receptacle: GM / UK / USA / AU...
Housing Color: Black or Argentate
Packing Dimension(cm): 42.5*20*15
Gross Weight(kg): 8
Origin: China
Quantity: 10000
Pack. & Delivery: 2pcs/ carton
Product also are available for 1kw,2kw,3kw,4kw and 5kw. 24vdc/220vac/110vac/50hz