SmartSolar MPPT 100/50 battery settings to charge Ecoworthy 280Ah 12V batteries

Q&A and troubleshooting
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1

Has anyone connected a Smartsolar MPPT 100/50 to Ecoworthy LifePO4 280Ah 12V batteries? If so, I am looking for the battery settings that worked for you. I reached out to Ecoworthy Support to ask them for their recommended charge controller settings. Here’s what I received;

Absorption voltage: 14.6V
Floating voltage: 14.6V
Balance voltage: No Re-Bulk
Voltage offset: None
Absorption duration: Fixed (Adaptive/Fixed)
Maximum absorption time: 120min
Tail current: 5A
Current percentage: 1%
Auto balance: Disable (Disable/Balance once every ____ days)
Balance stop mode: Fixed time (Fixed time/Auto voltage)
Maximum balance duration: None
Temperature compensation (mV/°C): None
Low temperature cutoff (optional): discharge -20℃ charge -5℃

Unfortunately the SmartSolar MPPT 100/50 does not allow for a “Balance voltage” of “No Re-Bulk”.

Any input would be greatly appreciated.

-Hank

2

I would reduce the float voltage to 13.8V.

Possibly also set the max abs time to 4hr. Depends on the number of batteries you are charging.

3

Thanks - I am charging two batteries.