Review on ⚡️ Golf Cart Voltmeter - Waterproof Monitor - Blue Digital Voltage Meter Battery Gauge - DC6.8-60V - Compatible with 24V, 36V, and 48V Systems by Simo Ramsey

EDIT* One problem people can have when doing precision work is crappy wires and the ring terminal they come with is so small they're likely to have a noticeable voltage drop , especially if it bends at the first time, try soldering or replacing it first. The wires provided are like 22 gauge wire. Absolutely useless and they break so easily. I soldered some larger wires but kept the original Ting connectors. As for accuracy issues, I'm not sure, although it seems to be within a volt. I think if you go to the trouble of installing one, you might buy something better. I'm not sure what the quiescent current is because I'll just leave it on all the time.