@brownest_Ant @BitchinRob I had to look up what a #Pylontech battery was.
Adding a link to a review below for anyone else that might be interested in #BackupBattery technology. No idea about the trustworthynes of the review, so “caveat emptor” applies.

https://www.solarchoice.net.au/products/batteries/pylontech-battery-review/