I HAVE A DYNUM SUPER CUB ELECTRIC RTF I RECEIVED AS A B-DAY PRESENT AND IAM HAVING PROBLEMS GETTING THE ENCLOSED DYNUM LI-PO BATTERY (1250Mah 3-CELL 11.1V 10C DISCHARGE)TO FULLY CHARGE. THE ENCLOSED DYNUM BALANCE CHARGER,CHARGER'S LIGHTS NEVER CHANGE COLORS AS STATED IN THE MANUAL EITHER. THE FACRORY CHARGE LASTED 10 MIN APPROXIMENTLY ( LOW I PRESUME FOR THI BATTERY) AND FOLLOWING CHARGES ONLYLAST APROXIMENTLY 5 MIN. ANY SUGGESTIONS ON HOW TO SOLVE THIS PROBLEM.