QC20 battery won't charge after replacement
Because the original battery was drained minutes to hours after charging, I chose to replace it with the following battery, which I found after some research: Product on Amazon
After soldering on the new wires everything seemed fine. The battery successfully powered the headphones and I can now listen to music again. But the battery won't charge: it blinks red. The Bose Help guide says there is an error, but I can't figure out what's causing it.
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