Cord doesn’t work... can’t charge batteries

So I really needed these batteries for my outdoor camera so as soon as I got the package (aka today), I immediately opened it and I began to follow the instructions. I managed to charge two batteries before the cord refused to work anymore. Mind you, I needed 4 charged batteries in total, I only have two...so basically I can’t use the remaining batteries cause I need a new cord to charge them ... so yes their use is wasted. I’m gonna need a replacement or a refund. Save your money and don’t waste time on this like I did.

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