Old_Islander
Aug 23, 2018Explorer
12V Datalogger for Troubleshooting Charging System
Before I retired, used to use little inexpensive dataloggers in our systems to track the health of the main batteries (remote solar charged instrument arrays...). I've been having battery/charging issues with my 10 year old Okanagan TC. So picked up this little guy:
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It's not as big as it looks in the pic -- maybe 4" long? Has a USB connector under a cap that plugs right into your PC. There is free downloadable software to downloading data and graphing.
More about it here: here: I picked mine up used on Ebay for just over twenty bucks including delivery.
Here's what you can see from it. This was a recent day-trip to Vancouver, requiring a 2 hour ferry ride. I've added notes showing what was happening. I've cut the graph into 2 pieces so it's large enough to read.
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and
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I have a timer set up to send shore power to the camper for 3 hours per day. Here's what a graph of that looks like:
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Among other things, it has shown me that my battery is shot. :(
Let me know if you have any questions about it.

It's not as big as it looks in the pic -- maybe 4" long? Has a USB connector under a cap that plugs right into your PC. There is free downloadable software to downloading data and graphing.
More about it here: here: I picked mine up used on Ebay for just over twenty bucks including delivery.
Here's what you can see from it. This was a recent day-trip to Vancouver, requiring a 2 hour ferry ride. I've added notes showing what was happening. I've cut the graph into 2 pieces so it's large enough to read.

and

I have a timer set up to send shore power to the camper for 3 hours per day. Here's what a graph of that looks like:

Among other things, it has shown me that my battery is shot. :(
Let me know if you have any questions about it.