Trying to understand why my solar PV batteries have failed so soon?

[PaulM47 (PaulM)]

@MikeD

Gassing off of lead acid batteries is way more hazardous than lithium. Pb batteries need good ventilation, in a basement this is not normally the case.

@PaulM47

I’ve opted to purchase four ‘wet’ leisure batteries, locate them in an outside cabinet and re-locate the solar gear onto the inside of the wall behind the cabinet

…is my solution described further up the discussion.