New L14 battery doesn't charge

I bought the 3-cell battery for my Librem 14, but it does not appear to charge. I was able to use it for a bit, and it shut down. Now when I plug in the power adapter, I get a green light and when i try to boot up, it blinks and immediately turns off (and the green light goes off until I unplug and plug the adapter back in).
Anyone know how to get this straightened out?

I would recommend contacting Purism support directly via

You might need to update the EC firmware:

i tried that; had the dickens of a time getting the drive to boot but updated it. Unfortunately, it is still not working.

I will try that. Hopefully we’ll be able to figure something out.