We are testing the huge MB56 battery from Yixiang with supposedly 34kWh of stored energy!
Before we can do the capacity test, I had to fully charge this battery and this alone was a bit of a challenge. Because I set the BMS wrong, it took over a week to charge it from solar.
At 09:08 I show you how to automatically top balance this big battery just with the JK-BMS and an adjustable power supply. Very simple and convenient. I also believe, this is the fasted way to balance a new battery.
I then had to come up with a way to use both inverters at the same time to get a discharge current of around 100A. There was a bit of setup necessary to get there, but eventually, it all worked out.
We also measure the loss at the fuse and breaker at 100A as well explore the battery with an infrared camera while discharging.
MB56 DIY Kit from Yixiang: https://off-grid-garage.com/diy-kits/
Review of the MB56 DIY Kit: https://youtu.be/aKqJq6cEQoc
EVE MB56, 3.2V, 628Ah, 2.2kWh
Capacity test EVE MB56 Cells: https://youtu.be/IViC6YHfLN8
JK Inverter BMS, 300A:
Best 60V/21A adjustable power supply:
Victron Smart Shunt, best and most precise way to measure your battery voltage, current and power:
FLIR Infrared Camera for Android and iPhone. Fantastic add-on to check for hot-spots on DIY batteries and electrical installations:
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