Battery on Bald Engineer

How to Profile Battery Usage for IoT Devices

Sat, 25 Jun 2022 13:08:00 +0000

When running on a battery, it is important to know what parts of your circuit draw the most current. Profiling is a process where you look at sections of code or interactions with hardware to see how much power each requires. In this video, James shows four tools (and their tradeoffs) when profiling IoT or Edge Machine Learning devices. See if it makes more sense for you to use a Digital Multimeter (DMM), Power Supply with history graphs, an oscilloscope

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UPS ESR Battery Measurements | Workbench Wednesdays #32:

Tue, 15 Dec 2020 22:57:00 +0000

As batteries age, their ESR goes up. Eventually, they will no longer be serviceable. A battery measurement tool like the Hioki BT3554 lets field service technicians monitor the help of batteries over time. In this video, see how it can be used to measure a live UPS battery. This episode was sponsored by Hioki.

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Energy Density of 9V battery vs. AA batteries

Wed, 23 Mar 2016 13:00:53 +0000

Previously I wrote up why the 9V battery sucks. As I thought more about that post, I realized, I never explained how much energy is in a 9 V battery versus say a couple of AA batteries. For this post, I am going to break down the energy stored in a 9 V battery, the small rectangular kind and compare it to what you get with 6 AA batteries. Yes, it takes up a little more space, but you might be surprised by the difference.

9V Batteries Suck -- And why you shouldn't use them.

Fri, 14 Feb 2014 12:00:37 +0000

Smoke detectors beep when their backup battery dies, which always seems to occur in the middle of the night (at least for me.) These backup batteries are usually a small rectangular 9V. They have become popular choices for electronics projects. If you need your Arduino project to last longer than a day, this isn’t the battery you want to use. Here’s why. What is a 9V Battery The 9v battery comes in a standard package about 25mm wide, 16mm tall, and 47mm long. On top there are standard snap-style connectors. The design of these connectors prevents you from attaching the battery backwards.

Measuring Battery Capacity

Mon, 09 Apr 2012 17:19:01 +0000

Why is choosing a simple AA battery such a daunting selection process? Manufacturers are keen on giving their products different names and brag about the chemical technology that makes them up. However, it is nearly impossible to make package-to-package comparisons of the battery’s capacitor. Denis Hennessay has a GREAT write up on Measuring Battery Capacity with an Arduino. In addition to full details on how his project works, Denis even shares the results of several AA batteries. Nice!

The next step in wearable fabrics: fabric batteries

Wed, 08 Feb 2012 02:22:38 +0000

Researchers at the Polytechnic School of Montreal have figured out a way to turn a battery into a flexible material. Each strand of the “battery” is 0.6V. While exciting, it has one major drawback before commercialization: it isn’t waterproof yet. How to: Weave a flexible battery into fabric material - Electronic Products.