Battery level indicator board

[Zero]

Has anyone used one of these battery indicator boards in a build yet? KA2284.



https://www.openimpulse.com/blog/produc ... indicator/

I'm confused by the fact it has four connections as most battery boards seem to only have two. Does this mean it requires a load on it to work? Also I assume you keep the jumper connected the way it is in the picture if using DC as it seems to work for AC too?

[Daniel_N]

If i read the schematic right, input and vcc is for AC or DC, ground is ground.
So you only need to wires, one ground and one for ac or dc.

[Zero]

Ok thanks, so it's vcc and either of the ground connections for dc? Any idea about the jumper, as in the schematic it looks like putting a jumper there maybe bypasses the 1st capacitor, so with a jumper = dc and without = ac?