Lithium is finicky. When it decides to go unstable it can be quite catstrophic. 140F doesn't seem that high though so it may be possible. Just sitting in a sunny parking it could get it that hot in Texas.
1700 cycles sounds low but it isn't. If electric cars have a 250mile range, and the driver puts on 12,000 miles/year (national average), thats 48 recharge cycles a year. So 1700 cycles would last 35 years. More than enough time. hmmm......These electric thingees are coming along.
next we will have a BobIstheBoredBatteryGuy.com