Battery voltage remains on Smart MPPT after battery removal

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ahib asked Nov 7, '21

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 SmartSolar battery solar

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Answer 1 · 2021-11-07T11:55:27Z

seb71 answered · Nov 07, 2021 at 11:55 AM

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

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ahib commented · Nov 07, 2021 at 12:47 PM

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

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seb71 ahib commented · Nov 07, 2021 at 03:10 PM

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.

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