do any of these chargers shut off when battery is fully charged?

Wow, Manufacturers make automatic chargers for my vehicles & my power tools, But for sensitive & expensive electronics - No??? That's messed up. Clearly motivated by $$$, they don't care how many batterys get ruined so they can sell more product. Not cool. Thanks bunches Apple.. NOT.

Ok, That makes sense. Thank you for clarifying. I do hope it's true. At least with Apple.

The issue came to light with me when one of my ipod type music players, Not Apple, was left on a charger too long by mistake. The battery bulged to the point of popping the case open. Again, it was not apple, but it was a high end player out of warranty 2~3 yrs.. So, after losing this unit, I got to looking at my Apple products, Not wishing for this to happen again. I do try to be conscious of time plugged into charger, but yes I have fallen asleep & forgotten.

I admit to being surprised. I own "automatic" chargers for automotive batteries as well as the power tool battery chargers that taper down to almost nothing when fully charged so as not to cook the batteries. I would think that battery powered electronics would have "something" similar... Hoping my A&K just encountered a freak one time issue.

****, I have an one Ipod classic left that's still playing, altho I do have to keep it plugged in due to battery no longer holding a charge..

I see. Still learning about Li-on..

Thanks