You are not telling the information that is needed.

1). Is the 902 charger set for Lithium Polymer? YES
2). Are you using the Li-xx Discharge function? YES
3). You did not specify the discharge rate you have the charger set for. 500mAh

Time indicates that the Safety Timer has triggered. This is set in the User Setup and defaults to 120 minutes. End means that the charger has finished.

I found that the safe time was set to only 120min. I changed to 720min.
Now my Bantam is charging at full my packs.

Thanks
Henrique