If you purchased the batteries from Hobby King submit a warranty claim through the website. Make sure you have photos of the warranty label on the battery (its the barcode label with "warranty" above it). Also include in the same frame shot all cabling with battery attached to the charger/checker with enough detail to read the display.
I have had 2 of these in the last year and had no issue with obtaining "credit" refund, just make sure your photos are honest and include all they ask for.
Do it ASAP so that you can get your credit to purchase replacements, you wear the freight unfortunately
