I wanted to test my small 4.2 Ah LiFePO4 battery and inline watt meter, so I repeated the test procedure above. The TSX was started on the lead acid battery, then I moved electrical over to the LiFePO4 battery, and disabled the alternator by unplugging the 4-pin connector.
Using
this LiFePO4 battery and
this inline watt meter, I recorded the results below. They are displayed on the right half of the spreadsheet and compared to the original numbers on the left. Toward the end of testing, the LiFePO4 became warm and puffy, and voltage began to sag. It's unknown why this happened, as peak current was under 33 amps. Also note that some of the higher drawing accessories pulled less current in the second test. This is likely due to battery issues and inadequate grounding from the 3 alligator leads I used.
