150V 45A MPPT - roll your own


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rogerdw
Guru

Joined: 22/10/2019
Location: Australia
Posts: 877
Posted: 10:43am 12 Feb 2024      

I have a question about the settings  ...  particularly the "tolerance" settings.

I have only noticed my setup go into float a couple of times  ...  and with the good solar days we've had lately, I would have expected it to get to float easily enough.

I'm using an ex forklift FLA battery, 48V 980Ah which is in reasonable condition and have set Absorb to 59.6 and for 3 hrs. Tolerance is the default 3.0 volts.

Is the tolerance to allow for eg. cloud cover reducing output for a short while  ...  without restarting the Absorb timer all over again  ...  or am I completely wrong?

Thanks.