BP Monitor - Power Supply Conversion

Walgreens WGNBPA-22A BP Monitor adapted to use 6VDC wall power supply.

Walgreens WGNBPA-22A Blood Pressure Monitor made by HoMedics does not have a socket for an external power supply. This monitor eats AAA batteries too fast for my liking.

I have a DC Power supply from my old BP Monitor (same manufacturer: HoMedics) and used an existing Thing: 3128785 to make the battery box connections and designed my own battery cover & base so the monitor would sit firmly in the table.

The Battery Cover/Base is held in place with packing tape.

Doing it this way does not modify the machine which would otherwise void the Limited 5 Year Warranty.

Thingiverse Links:
AAA Battery Adaptor For External Power - Thing: 3128785
BP Monitor Battery Cover & Base Walgreens WGNBPA-22A Thing: 6483654

[SquareRootOfNegativeOne]

Always make sure the outside of the barrel is negative. I've come across a couple over the years that are positive. I have a label maker that is outside positive and had to flip a replacement wall wart with it. Even the markings on the wires like the white dash lines don't always indicate positive or negative. Best to use testers and check.

[Rickmakes]

I wonder if this would run directly off 5V USB power.

[pmelchman]

Interesting how the battery symbol still showed one bar…. Things that make you go Hmmmm