Poida MPPT setting changes for LiFePo?


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Murphy's friend

Guru

Joined: 04/10/2019
Location: Australia
Posts: 673
Posted: 08:28am 17 Dec 2024      

  flyingfishfinger said  

Is anyone using this MPPT for LiFePo batteries? If yes, what settings are you using?

Cheers,
R



I have been using Poida's MPPT ever since he published it first about 3 1/2 years ago.

This is with my 25KWh Lithium battery bank. There were no problems with the MPPT once I had it set up to run reliably.

My settings are, as per the menu posted back then:

G - zero Iin sensor 123 ADC counts
H - zero Iout sensor 119 ADC counts
I - max battery Volts 57.5V
J - Absorb voltage 56.0V
L - maximum Current 50A
M - night power 5W

O - NO Equalisation

S - Float voltage 55.5V

The remaining menu letter settings are left as Poida posted them in his message, dated 08 Sep 2020

I have never observed battery bank voltages higher than 56V, the MPPT changes to float once that is reached.