3 ms·

How many kwh do you need? These are just over $1000 - https://signaturesolar.com/eg4-lifepower4-v2-lithium-battery-48v-100ah-server-rack-battery-ul1973-ul9540a-

• cogman10 2y ago
  Holy cow! 5kwh for $1k is amazing!
• aidenn0 2y ago
  That is not a UPS.
  • MichaelNolan 2y ago
    What’s the difference between a regular battery with a smart inverter and a UPS? It’s just that the UPS is an all in 1 box right? Or is there something else that a ups has?
    • aidenn0 2y ago
      Firstly, the linked battery doesn't have a smart inverter, so still not a UPS. An online UPS will also have a AC-DC converter (rectifier) in addition to the DC-AC converter (inverter). It usually also has fans to cool those since they are running continuously, even when AC power is available. An offline UPS is basically an online UPS with a relay, so that if the AC power is working, all of the UPS circuitry is bypassed. This reduces the usage of the DC electronics and increases the efficiency when power-loss is rare (since the AC->DC->AC path will always dissipate some power). A line-interactive transformer is like an offline UPS, but with voltage conditioning (e.g. via an autotransformer) to handle voltages that are a bit low or a bit high. Consumer UPSs are (almost all?) either offline or line-interactive.