Yeah, I've never charged my RX packs over .5 amps. Even that takes over an hour. They'll last a long time in the long run. And almost twice as long as my radio batts while in the RC.
I discharge mine at 1 amp. Not sure if this is normal, but it's worked well for me. It's what I was told by a trusted friend at the LHS. I've had three 5 cell RX packs for over a year now, with no signs of problems.
They're not completely different cells used in electric cars. Just a different size and different demand. The speed that you charge or discharge them determines the life of them.
Slower is always better.
You're not having fun until you break it.