It's the battery below, with the charger used. I have a Voc of 14.4+-.2 and a CC of 50A. The charger is a 20A. I'd also note that it was about 48 hours after disconnecting from the charger that I attached the inverter and tried to use it.

Battery: https://www.amazon.com/dp/B09NDDCJG5

Charger: https://www.amazon.com/dp/B09MKL2LCX