question

ahib avatar image

Battery voltage remains on Smart MPPT after battery removal

Hello all,

Does anyone know why on a 100/20 MPPT, having removed a battery pack, but with the PV still connected, the app still shows 13.5V in float mode for Battery? Testing the voltage across the terminals confirms this. Is the controller trying to do something it shouldn't? Having a problem sensing presence or lack of a battery?


Thanks

MPPT - Solar Charge Controllerbatterysolar
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1 Answer
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seb71 answered ·

The problem is that you should not disconnect the battery while the PV array is still connected.

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Ok thanks. Can you expand a little? Will this damage anything? Or just will it confuse the app until it's given another battery?

There is a risk to damage the charge controller if it is connected to the PV array, but not connected to the battery. So avoid doing this.