Back in 2020, I purchased an inexpensive 16 AH LiFePO4 battery from Amazon, made by Miady. Initial testing indicated that it was optimistically specified, as it tested to be 15.24 AH, but that wasn’t bad given it was about a third the usual price. I wound up using that battery as my primary power source for many POTA activations over the next two years.
The last time I charged it was on December 20, 2022. Giving it a full charge this morning, I found that 0.357 AH was required. So the battery had self-discharged 0.357/15.24 or 2.3% over a period of 158 days.
Just goes to show how low the self-discharge of a LiFePO4 battery is – about 5% per year!
