Lionel is great standing behind the 990 and 993 units. No questions asked, RA issued and back to Lionel it goes. The idea of a back up 990 is a good one. Mine went back January 15th, called Lionel on Friday, February 16th for a status check and was told they had a few units ahead of mine. I wish I had thought of getting a back up. This is NOT a complaint as I have nothing to complain about, just lamenting not having a back up. One is on my list to buy.
I have no complaints about the life of the rechargeable batteries.
Mike