kabbro wrote:
Oops, thought of another question: if when I take the battery into a battery shop and they test it and if they say it’s “good”, then presumably the problem would be a failing converter?
Yes.
If you have a voltmeter you could find out right now by looking for 13.6 volts on the battery or to the cable if you disconnect a battery cable.
Is the battery warm and bubbling?
If you have a 10+ amp portable battery charger you could bring it along to use in place of the converter depending on the time you have to get this sorted out.
