Hello, Sorry for a newbie Q. If I have a 340ah Lithium LifeP04 12V battery in my camping trailer... its BMS set to 5% (for a drainage of 95% = 323 usable amp hours)... it is hooked to an inverter claiming to have 88% efficiency... how many AC watts (@ 120V) can I expect in theory, or... heaven-forbid, in reality... before the battery drains to that 5% level? I thought this was a simple question but I am getting a wide range of answers from different sources and everyone is 110% confident that they are correct and everyone else is wrong. WhoDaThunk?! Is there an online calculator to do this for lithiums (meaning, not hardcoded to a max drainage of 50%)? Thanks very much for any help you can give me. BTW, I know that I am severely reducing my charging cycles by draining to 5% but even with that reduction, I don't boondock enough that I would expect to use up all those charging cycles for 7-10 years. Thus, I would rather get the maximum amp hours I possibly can on each charge can rather than extend the life of the battery far beyond what I will ever be able to use.