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Old 04-19-2024, 01:08 PM   #1
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Replace Lead Acid Batteries with LifePo4

I have 2 - 100AH Flooded and thinking about upgrading to LifePO4 2-100AH
Trailer Specs:
-180 Watts solar
-Go Power Solar Controller GP PWM 30UL-manual states compatible with LifePO4 with a BMS
-True Sine Wave Inverter WF-5110RS - 1000 Watts
-WFCO WF-8955PEC 55amp converter

I have found online that this converter is "supposedly" not compatible with lithium but I also read it will still work. The issue it may not fully charge to 100%?
We do not boondock very much so I really don't want to replace any parts but I will if need be or should I just stick with Lead acid? Thank you.
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Old 04-19-2024, 01:44 PM   #2
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Your current converter will charge the LiFePO4 batteries to about 80% and then very slowly charge them fully. However, your Go Power Solar controller will fully charge the batteries and provide enough voltage for the LiFePO4 batteries to balance the cells. If you wish to upgrade your converter, there is an upgrade for you model, that will be fully lithium compatible.
WF-8955-REP Converter Replacement Kit

I have a WFCO 8735 converter that is not lithium compatible, and 150W solar with the Go Power 10A controller. Between the two, they charge my 2 100Ah LiFePO4 batteries without any issues.
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Old 04-19-2024, 01:50 PM   #3
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I'm doing to do same. I'm keeping the FLA's till they go bad, they've served me well past 5 years. Adding a 100ah LiFePO4. Keeping old converter, installing a battery bank switch to switch charging/use on the converter between the 2 battery banks. The GoPower charge controller allows for charging 2 separate battery banks, of 2 different chemistires, and should bring the Li battery up to 100%. Have to run cables from the Li battery to the Gopower controller. Should not be too difficult other than running new cables beneath trailer.
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Old 04-19-2024, 02:09 PM   #4
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Thank you very much
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