DIY Battery Voltage Tank-o-meter

ricericerice;9945673 said:

I'm still kinda new around here, hope i posted this in the right section.

For on-the-go battery voltage testing for mech mod users. A cheap, fun, and easy project.

I basically cut open a carto, soldered wires to the postive and negtive terminals inside. I than soldered it to voltage meter. Than stuffed the whole thing into a carto tank.

Make sure you get a carto tank with plastic top and bottom caps, because you have to etch in some grooves (I used a mini-dremel) to let the voltage-meter fit in the tank. I had metal caps and it sucked very bad to make the grooves. Also make sure the carto-tank is tall and wide enough, the dimensions of the meter are listed in the product info.

Link to $2 dollar voltage meter $1.93 0.36" Display 3-Digit 3~30V Voltage Tester for 18650 Battery - red LED at FastTech - Worldwide Free Shipping

The tank-o-meter is accurate when compared to my Fluke multimeter.

Got inspiration from a french e-cig forum and a reddit thread

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