Hello Ben,
TLDR. Even with G3 inverter Solax can guarantee it with support lead acid and the customer support is horrendous as the 'specalists' I've spoken to seemed to have difficulty with what lead acid was thinking it was a brand of battery not a type.
If you want lead acid sell your Solax...
Hi Ben, that's fair enough then. I wouldn't have done that myself personally or recommend that to my customers, as the customer service and warranty process s**t show they have in the off chance it develops a problem in the future, was enough to steer me far away from the company for future...