This surrogate battery lets you experiment with your battery interface. Alter voltage, measure power usage, inject external power etc.
Designed by RossGK Tangibles in CanadaThis seller is taking a break until Oct. 11, 2024. Sign up below to get an email when they're back!
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Pausing the store for six weeks to manage a house move! Rest assured that I'll be back in October (or sooner if things go smoothly). Thanks for you support over the last few years.
What is it? Makers, hackers, prototypers - we often cobble together a system from existing parts on hand, or spend some time analyzing a system and need to get our fingers (and test tools) inside the…
Read More…Makers, hackers, prototypers - we often cobble together a system from existing parts on hand, or spend some time analyzing a system and need to get our fingers (and test tools) inside the gear. These little dummy-battery items make a bunch of things easier for us.
Note: see AA, AAA and CR2032 coin-cell versions in my Tindie store.
Hack a battery interface - Say you have a 4-cell battery pack, but your circuit only needs 4.5 volts. Four cells (4 x 1.5) is nominally 6Volts, but replacing one of the batteries with a shorted-out dummy will give 4.5V instead. Short out two positions for 3V etc.
Analyze a circuit - Perhaps you have a device running on a two-AA battery pack and you want to measure the current. Use a 3-cell pack instead, and replace one battery with an open-loop dummy. You can put your meter in series easily to test the current consumption.
Inject external power - Maybe you have a device that uses up expensive batteries and you want to use a wall-wart supply instead. Use an open loop dummy battery, plus a shorted cell in a two-cell pack which lets you inject external power. [CAUTION - don't mix external power with an actual battery]
Analyze prototype behavior - to analyze the operation of a device as the power fades out, or perhaps to chart power usage in different operational modes. You could use one open-loop dummy battery, and shorted ones for any other positions. This way you can use a combination of external power, volt meter, ammeter etc to do a thorough analysis.
In many situations I found myself soldering up test wires on new prototypes. With a couple of dummy cells I could switch quickly between test and operational mode with my projects.
Its simplicity is what makes it great. No fancy components or complex hook-ups, just pop it into your existing gear without wasting time.
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