Yes just one decade is I think barely broken in if treated properly, see dozens over 15 years one 18years, and those that get cap tested are well over 90% SoH.
The oldest one still shows as over 100% name plate rating, did not get benchmarked until 7-8 y.o.
But all depends on care parameters, none of these were in a propulsion use case, all House banks where 2C loads are considered abusive, charging usually well under 0.5C.
Top quality maker of course also required of course
Besides those two GBS, Sinopoly, CATL and A123 (now Lithium Werks / Valence / Super B) have proven themselves long-term.
But beware the distribution channels are very dodgy
direct from the maker is best to try to get Grade A or B worst case.
The oldest one still shows as over 100% name plate rating, did not get benchmarked until 7-8 y.o.
But all depends on care parameters, none of these were in a propulsion use case, all House banks where 2C loads are considered abusive, charging usually well under 0.5C.
Top quality maker of course also required of course
Besides those two GBS, Sinopoly, CATL and A123 (now Lithium Werks / Valence / Super B) have proven themselves long-term.
But beware the distribution channels are very dodgy
direct from the maker is best to try to get Grade A or B worst case.