There’s a strange thing about batteries. Sometimes you think they will never run empty. You work with them on full power and everything is perfect. And suddenly, without warning they stop completely. No phase with half power and no slow running out of energy. Just blackness within seconds.
On the other hand there are those batteries that seem to be weak right from the start. You never trust in them but it ends up with using them for years and years. Not the power of an atomic power plant but reliable like hell. And even when the are almost empty there’s some energy left.
For some reason you never know in advance what type of battery you use. No idea whether I’d like to know in advance. Probably not. Maybe that’s what life’s about.