Phew, close one. Realized at the last minute that the polarity is reversed (-6V) on the Tecsun PL-680 shortwave radio.
#PowerpoleAllTheThings

Finally got my hands on one of these #WestMountainRadio battery testers so that #DenCo™ can legit test its products.
It's an older version, but it's all I could find since the current model is out of stock till July. #LiFePO4 #PowerpoleAllTheThings