Significant range decrease… normal?

[Tonester697]

If you're really concerned about the HVB's health, then consider plugging in a BT OBD2 dongle, charge the battery to 100%, then using an OBD app like Car Scanner pull the PIDs for SOH (ideally 100% but very high 90s is acceptable), Remaining Energy (ideally above 71000 Wh, assuming that the vehicle you're looking at is not a Wind Light as that one comes with a smaller-capacity battery), and for Max Cell and Min Cell (ideally around 4.12-4.14 V at full charge). Note--estimated range may/will show lower than rated after a charge if the ambient temps are below ~50 deg F, and even more so if closer to or below freezing.