I tore a little bit of the insulation off my MacBook battery charging cable, Thank god I had some electrical tape on hand, but what I find annoying is Apple charging me more than $25 for replacement cable that is quite flimsy, at least my current MacBook does not use the magnetic connector like my previous MacBook had, Apple charged me $75 to get that cable replaced. In all seriousness Apple should really should consider developing a more durable power adapter, or at the very least allow for third-party companies to produce power adapters that are compatible with the MacBook, because I despise having to pay outlandish amounts for replacement hardware.