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Everything is brand new. The charger and the battery.. Never been used
@drew tucker You need to contact customer services via "Live Chat" at the bottom of the web page.
Follow the colored wires and make sure red goes to red and black goes to black from the charger to the battery. Sometimes if you try to charge without a battery connected it spikes the output higher than normal and when you connect a battery it forces the output circuitry of the charger negative a little and can give that error. Turn it off, wait a few minutes and try again.