ANY Battery can be defective, or prematurely die a natural death, but at least with LFP’s some come with a ten (or even 11year) warranty….I admit this is purely anecdotal, but when my comparatively pricy 18 mo old single 200a/h LFP for some reason developed a premature shut-down at 20% SOC, it was simply replaced under warranty with no questions asked…I load tested the replacement and it’s actual capacity was at 215a/hrs….Bottom line is there’s just no certainties in life, but reputation often matters - “you just gotta pick your own poison” - lol
3 tons