Since my old, dirt cheap battery charger broke down, I disassembled it and was surprised not to find any integrated circuit in it:
Obviously, I'm now looking for a replacement. Now, there are advanced battery chargers which advertise:
... provide longer lasting, better performing batteries ...
But I'd rather ask in this community: What are the specific advantages of the more expensive models? I guess they're limiting the charging current? But if they only inform me on fully charged batteries I'd rather stick to the cheap chargers.
I'm slightly unsure if this is the right place to ask such a question (it sounds like buying advice) -- let me know if not.