Warning: if you have not used this MBP for a while, check how it does look like.

I kept mine for backwards compatibility (such as Rosetta and old FireWire). I cleaned up my drawer today.

See how it looked like today: http://666kb.com/i/do60coz0kn5z5txd5.jpg

The battery was most severely blown up, crashing the body shell. I’m glad it did not burn the house to ashes.

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Are there more than one A1278? Mine is the MacBook Pro 13” from 2010, which has no access door, but just a single body shell (613-8316-A)

Hopefully those are of better quality. Those newer MBP have keys that flat that the surface is quickly torn down (partly missing surface by abrasion or poor quality after 10 months was considered by Apple service as normal and out of warranty)