I think it won't be too long before we see LTO starting batteries that last so long you can take it with you to a new car. Just need to get rid of those pesky ol' lead salesmen. ?Lto batteries buy every test I've seen are safer than lead acid ever hear someone you know tell a story of a hydrogen explosion can be like a bomb. A carpenter I knew said they were jumping a dozer and boom!! He said it was miracle no one was hurt and lto I'd say is the safest currently in use but not technology in development.