question

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failsafe asked

buck boost stops output current when target voltage is reached

installed 100amp Buck- Booster and programmed output at 14.6 volt 100 amp output for 400ah lithium battery's as soon as it reaches set output voltage it stops putting out amps, any ideas

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1 Answer
snoobler avatar image
snoobler answered ·

Are you saying that the instant it hits 14.6V, the current instantly drops from 100A to 0A?


If so, that's the BMS cutting you off. One of the 4 cells is over limit, and the BMS is opening the charge circuit.


Lower voltage to 14.4-14.5V and see if the behavior changes. You can easily get the battery poked full at these lower voltages as well.

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