Computer doesn't recognize replacement MacBook Pro battery

I bought the battery repair kit for a mid-2012 13” MacBook Pro and installed it. (The original battery was not holding charge well at all and the computer was a little bit slow, but didn’t appear to have other problems.) After a few days with the new battery, the computer started shutting off apparently at random. I tried SMC and PRAM resets, but the problem came back. Then, a few days after that and while the charger was plugged in, the computer stopped recognizing that there was a battery installed altogether. I tried taking the battery out and putting it back in, at which point it recognized the battery was there, but again, a while after I began charging it, the same thing happened — it did not recognize that a battery was installed. At that point I returned the old battery, which functions exactly as it did before. Does this sound like a problem with the specific replacement battery, or something to do with my computer?

EDIT: have added a screenshot from coconutBattery, showing information for the replacement battery.