Products > Test Equipment
Estimating battery life with an instrument?
mdredmond:
Hi folks,
I searched but didn't find anything...
I'm looking for an instrument that can help me estimate battery life for a device I'm designing. This will be a sleepy device that spends most of its time in light or deep sleep, with occasional wake-ups to take sensor measurements and radio those to a server. I think what I need is a "source measure unit" but I'm not familiar with these. Ideally it would be something that powers my device and profiles current consumption and total mAh usage over time as the device does its thing. My budget for such a thing would be sub-$10k USD.
Any ideas?
tautech:
Welcome to the forum.
Joulescope is industry standard for this need.
https://www.joulescope.com/
mahyarJbr:
Hi
you can use Fluke 289 True RMS Logging Multimeter you can buy it from Fluke website or websites like Amazon, mme-ae or aabtools
Shonky:
What supply voltage and current do you need to measure?
At the very cheap end of the scale a Nordic Power Profiler can do up to 1A at 5V so for a single cell lithium coin cell or single Li-Ion kind of device it could do what you need. It auto ranges down to about 100nA precision.
Its under USD100 but might do what you need - you haven't really detailed your power requirements.
pdenisowski:
https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/dl_application/pdfs/Predict-the-lifetime-of-your-battery_ac_en_3684-0299-92_v0100.pdf
https://www.rohde-schwarz.com/us/applications/power-consumption-analysis-tool-for-r-s-ngx-power-supplies-application-note_56280-1171639.html
https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/dl_application/application_notes/1sl380/1SL380_e_Power_Consumption_Analysis_Tool.pdf
:)
An NGM should be sufficient (and cheaper than an NGU) for this application.
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