I have a Yaesu FT-250R HT and an accompanying CD-47 drop-in desktop charger. I am having a problem. I left the HT on and the battery drained completely. Now, when i drop the battery pack into the charger I just get a blinking yellow LED. I no longer get a steady red LED indicating that its charging.

Does this mean my batter pack is wiped out ? Or is there a problem with the charger itself ? I can;t seem to find any info on this online. I can;t even find a manual for the CD-47 on Yaesu's website. It's a fairly new charger, i only bought this HT + charger a year or two ago.