I have a setup with several batteries that can deliver around 40 amps of surge current. While I've installed soft starters on my two heat pumps to reduce the surge to about 40 amps each, running multiple units at once can trip the batteries. I'm thinking about using a 240V battery in UPS mode, like the EcoFlow Delta Pro Ultra, to manage that surge. However, I need it to handle a rated load amp (RLA) of at least one unit, which is around 15 amps. Are there any solutions or specific home backup batteries I should consider, or perhaps a 48V rack battery and inverter to achieve this? I've seen similar queries before but haven't found a clear answer on a suitable model.
1 Answer
When using batteries, remember that connecting them in parallel increases their current capacity. For instance, if you have five batteries that can each output 100A, together they'd provide 500A, as long as your cables and busbars can handle that much current. Just make sure your setup supports it!
That's a good point, but keep in mind that batteries provide DC while HVAC systems typically operate on AC. So, you'll need to have micro inverters if you're going AC.