I have two Valence U27-12XP's which I pretty much screwed up by over draining it. The Valence software shows 1 of the 4 cells can't hold over 3volts in each battery. I am just a hobbyist and still learning but don't have the appetite to break these open to keep the good cells. I tried as you can see but I've given up. This community has helped me so much so I thought I'd give back. So if anyone wants these two batteries it's all yours you just need to pick them up in Brooklyn. DM here
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