alt Hacker News> Do they fail outright at around 10 years, become unsafe, or do they just lose capacity?
LiFePO4 generally degrades to 80% capacity after 10 years, that's it. Safety isn't an issue.
> Do they fail outright at around 10 years, become unsafe, or do they just lose capacity?
LiFePO4 generally degrades to 80% capacity after 10 years, that's it. Safety isn't an issue.
At which point if you're short on capacity (but who knows how your demand might shift over a decade) it's not like you need to replace the original batteries to get that 20% back, you will probably be able to just expand the pack to bring the capacity up.