Just got a XP ORX with the 9x5 HF coil and the coil battery won't charge. The control battery charged up fine but when i try to charge the coil battery the light on the coil blinks every three seconds like it is charged when it is only 30 % charged. The light never stayed on continually like it says in the manual when i first hooked it up and yes i have it hooked up the right way. Thanks, Jim