Simple case to make an inline volt meter with Power Pole connectors and an easy to find LED volt meter.

I designed this to make an inline voltage monitor when using batteries.

As well as the printed parts, you will need:

1x 0.28" LED volt meter module - easily found on eBay / AliExpress etc (see photos for dimensions).4 x Anderson Power Pole connectors, plus a crimping tool or soldering equipment.2 x short (~5cm) lengths of wire, make sure they will handle the expected current.Glue (probably).