Nice report and testing. Aren't these things just fancy batteries? Good pics too.
For some this is a fine addition to their camping experience.
I just can't see the advantage for me. I have a 2000w inverter and solar and two AGM. With room for two more in a pre-designed wired cubby.
So far just haven't needed two more. Plus I got an onboard genset with about 87 hours. I think.
I'll be watching for use reports and plus and minus comments. 🙂