There is no need to drain lithium batteries fully before recharging, meaning less maintenance, though they are subject to catch fire if overcharged.

CNN: NTSB: Faulty Dreamliner battery was not overcharged

For conventional companies, archives are an expensive problem: they need curating, maintenance, storage space, and no-one can ever judge what will be significant in the future.

BBC: Radio

There is no need to drain lithium-ion batteries fully before recharging, meaning less maintenance, though they can catch fire if overcharged.

CNN: Quick fix for Dreamliner looks less likely, experts say