Uninterruptible Power Supplies

Type of UPS:

Standby/Offline

Offers basic protection such as surge protection and battery backup.

Online, double-conversion

Thanks to Wikipedia.

What Pieces Of Equipment Are NOT Suitable To Be Plugged Into A UPS?

A device that exceeds the UPS's VA/Watt rating should not be plugged in, along with high drain devices, medical equipment, and aquatic equipment. An example of such items is shown below:

• Laser printers
• Space heaters
• Copiers
• Paper shredders
• Vacuums
• Curling irons
• Steam cleaners
• Hair dryers
• Kettles

Ultramax

/etc/nut/ups.conf

user = nut
maxretry = 3
[ultramax]
  driver = "nutdrv_qx"
  port = "auto"
  vendorid = "0665"
  productid = "5161"
  product = "USB to Serial"
  vendor = "WCHCH544"
  bus = "003"
  # default.battery.voltage.high = 24
  # default.battery.voltage.low = 1
  override.battery.voltage.high = 27.2
  override.battery.voltage.nominal = 24.0
  override.battery.voltage.low = 21.0
  override.battery.packs = 2
  runtimecal = 300,100,900,50
  chargetime = 21600
  idleload = 10