Sonny you say your batteries are good but the error you describe indicates low batteries. If you have a digital voltmeter or can borrow one. set it to 200 volts dc and plug the leads into the two outter holes of the charger plug located under the front of the joystick. Fully charged you should be reading 25-27 volts, if you are reding less than 22 volts then the batteries need charging. Now with the meter still plugged in to the joystick plug in your on-board charger. when it is on and charging you should be reading anywhere from 25-30 volts. If you are not then the charger is not putting our the correct voltage and your batteries aren't getting charged correctly. After a full charge (the yellow light on the charger turns green) you should get 25-27 volts on the meter. If all of the voltages check out then you have another problem that I need more information to venture a solution Hope this helps you
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Sonny you say your batteries are good but the error you describe indicates low batteries. If you have a digital voltmeter or can borrow one. set it to 200 volts dc and plug the leads into the two outter holes of the charger plug located under the front of the joystick. Fully charged you should be reading 25-27 volts, if you are reding less than 22 volts then the batteries need charging. Now with the meter still plugged in to the joystick plug in your on-board charger. when it is on and charging you should be reading anywhere from 25-30 volts. If you are not then the charger is not putting our the correct voltage and your batteries aren't getting charged correctly. After a full charge (the yellow light on the charger turns green) you should get 25-27 volts on the meter. If all of the voltages check out then you have another problem that I need more information to venture a solution Hope this helps you