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anhoume avatar image
anhoume asked

Temperature compensation float or bulk?

Hi! I have got a new set of batteries. I'm now trying to set the MPPT chargers to the correct setting for the batteries. The manufacturer spec shows different temperature compensation values for bulk and float. What would be the recommended compensation value to enter in my chargers?

Float Charge:13.5-13.8V,recom.13.8V(-18mV/ °C)
Cycle charge:14.28-14.4 V,recom.14.4V(-30mV/ °C)

MPPT SmartSolar
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mvas answered ·

Absorb is more important than Float. I would enter -30mv/C. Float will be off by a small amount. Do you have a Digital Volt Meter that can accurately measure 13.8 volts?

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anhoume avatar image anhoume commented ·

Thank! Sounds reasonable. Yes, I also got a smartshunt connected to the bank.

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