Back in 2002 when I got to my first duty station I purchased a Braun 8585. It still runs perfectly and the original battery still holds enough charge for 2 full shavings of my face before it needs charged again (I always just have it plugged in when i shave anyways so it never dies mid shave).

I also haven't changed the foil in about 6 or 7 years...you're supposed to do it every 18 to 24 months. Still works perfectly.

Also, my cleaner broke about 11 years ago, so it hasn't had a deep clean since then...I've disassembled it before after I dropped it and a side popped off, and it was still clean on the inside.