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Bms- any idea what these balance values mean?


sunset1
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59 minutes ago, tetrasection said:

That means it only starts balancing when the voltage of one of the batteries reaches above 3.50V and stops balancing when below 3.50V

Problem with these BMS's is the balancing current is tiny, only 0.03A...

Hi tx. what is wrong with slow current? 

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18 minutes ago, sunset1 said:

Hi tx. what is wrong with slow current? 

Slow balancing. Imagine charging your batteries with 2500W of panels, you'll get about 50A of current, divided by your 14s batteries is around 3.6A per battery.

So in that scenario the balancing current would be less than 1% of the charging current.

Might be fine for brand new matched cells but if your cells are even a bit unbalanced I highly doubt that would be enough to balance them during a single charge cycle.

So I personally would add a cell balancer to this BMS. You get 14s balancers like the one I linked to in your other thread do 0-5.5A balancing, basically the bigger the imbalance the more current it supplies. 

Edited by tetrasection
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