DIY Digital Battery Balance Monitor

I want to share a simple battery balance monitor that I have designed & assembled

It uses (2) digital voltage meters (~$3.00 ea.) & a DPST (dual pole single throw) switch (~$2.00)

Each meter is connected to & displays the voltage in 1/2 of the battery pack

So, if both meters display the same voltage reading
…it indicated that the battery pack is “in balance”