I know this has been asked, and the answer is always the same. You can't use a blu charger on a 510 because the polarity is switched. So if I understand correctly, I can just switch the red and black wires in the blu charger, and it should work fine on a 510 battery? I'm never going back to blu, and I see no reason to throw away a perfectly good charger if that's all there is to it?
Thanks for any info.

Thanks for any info.