Today, we balance a 16s battery by using an Active Balancer from Heltec. We have seen and used these devices before but I wanted to highlight again how to use them correctly to have the most success. It is not a set and forget process.
Two out of the 16 battery cells are out of balance and I let the Heltec balancer work over night to get this all right again. I explain how to install the balance cables and check them before connecting the actual device. Also, don't get fooled by all the cells having the same voltage. It does not mean you also have the same state of charge (SOC).
The balancer should not stay connected all the time with LiFePO4 battery chemistry. Due to the very flat charge curve, the balancer can create an unbalance at lower voltages, so does the exact opposite of what is expected.
Why the active balancer only works at higher voltage of your battery.
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Voltage Trigger for automated balance function (this may not work correctly as one viewer pointed out below!) I will be doing some testing around this and advice in a future video:
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