Battery charge versus remaining usable charge
This seems like a silly question, but I know it's actually complicated and may not be something anyone can really answer. That said, is there any way to know how long a set of batteries will last bas...
Forum Discussion
bkenobi wrote:I'm a little late to this party and this is slightly off topic but I found THIS to be a very useful tool. I have used mine to monitor my battery voltage while connected to a charge timer, fridge temp, temperature swings in the house, attic temps, etc. I'm currently using it to monitor the humidity in a storage shed.
I had 2 ideas to track voltage and was curious if others had a different approach.
1) I could buy a cheap 0-99vdv digital meter off ebay and mount it in a cabinet to see what the current charge was.
2) I could use a microcontroller (eg, arduino) to read voyage and track it over time to see if it holds correctly.
I could actually do both pretty easily. Has anyone else done either and found it useful?
If you know how to use it and design circuits around it it's well worth the $7.
