Efficiency test LTO Yinlong battery

The test ended up showing a higher efficiency than I expected, it seems nearly too high. I conducted the test with as robust of a technique as I thought I could do with the equipment that I have.
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Battery Load

https://s.click.aliexpress.com/e/_AfM7OW
This is an updated version that I haven't bought yet, but will. It has a 4 wire connection and improved connectors so will be way more accurate.
https://s.click.aliexpress.com/e/_AUNvbA
Watt meter
https://s.click.aliexpress.com/e/_9QCPWq
Power supply: This is a decent grunty supply (fairly expensive) It's not really suitable as a lab supply since it has large capacitance on the output - this means that if you are current regulating a sensitive device that has changing loads (driving an LED or something) it could temporarily overcurrent the device. Great for charging batteries or just a good constant current constant voltage supply for general purpose. 32 Volt 32Amp. I've tried the smaller form factor supplies similar to this, however they do not seem to be as good or robust.
https://s.click.aliexpress.com/e/_AV63mI

Видео Efficiency test LTO Yinlong battery канала Brendon Tait