I have just bought my MacBook Pro 15" Retina new this week. When storing the charger I wrapped it as described on the support page, but now I've noticed that in some places in the power cord (charger to MacBook) there are small lumps.

Do not wrap it around the charger, too tight and not the best way to store it. you let it losely in large circles. The bumps are not serious but may become the beginning of a crack, do not twist the cord to get the lumps out.

IMHO the worst way to store, transport, any Mac notebook charger is to wrap the cord around the transformer block as described on the Apple website and documentation. This only leads to the cord braking and as you have noticed some lumps.

I wrap the cord around my hand loosely in big loops never putting any strain on either end of it. I also let the cord hang loose before I start wrapping it around my hand. This allows the cord to twist naturally as I wrap. When un-wrapping I also hold it up to let all the twists work there way out. This has worked for me with all the AC adapters for Mac computers I've owned.

As they said in the Movie "Its A Catcha 22". If and when the cord on the charger breaks Apple deems that Abusive treatment and Abusive treatment, accidental damage, is not covered by the warranty.

The only time the charger is replaced under the warranty is if it fails to supply power to the system and the cord or transformer brick has not been damaged in any way.

Discussie stuk. As seen the price nobody will be very interested to do paperwork about such a thing.. As LowLuster says Catch22 (there was once a super good movie with this name...).

Lex