Originally Posted by Hangtownmatt

Corrado, you could be right. My only resource to charge the aftermarket battery was via the NiteRider itself. Maybe it never charged and that's where proprietary vs. non-proprietary kicks in. But for now I give up. I've run out of time and energy. The original battery still works and I'll continue using it for the time being, I find it really surprising no one else has spoken up. I got nothing on candlepower forums; nothing! So Thanks for your input.