Bike:
. eZee Sprint GTS
. LI Bat. Phylion XH370-10J DC37.0V
. 1,050 miles ...10 months old
. After the first 200 miles the controller failed and I replaced it

Problem:
. after replacing the controller everything worked fine. However, gradually the distance/time before the controller yellow and then red light came on kept getting shorter/sooner. My last ride in Sep. (before winter set in) only got me about 2 miles on the flat and then a 1/4 mile uphill before the red came on and sytems shut down. I was able to turn everything off for awhile and then go again but only for a short while.
. It appears that the bat still has 42 volts left when I test it both when I start and finish.
. I just charged the bat after being stored inside after 4 months. I tested 42V when I started, it took 25 minutes to charge....then it tested 42 V again after the charge was complete.

Questions:
1. What is the expected life of lithium batteries?
2. Has anyone had a similar problem?
3. Could it possibly be another controller problem?

My next step will be shipping the battery/charger to the dealer (300 miles away) to have them do tests...

Any help would be appreciated......thx