DavidEM
Senior Member
Bear with me guys as this post is going to be involved and technical.
Several years ago I noticed that the WFCO 9855 that came with my 2021 Axis was only charging at 5-10 amps into my 200 Ahs of AGM batteries when discharged to 70% SOC. I Replaced it with a PD9260 and the charging current shot up to 30-40 amps under similar conditions.
So I concluded that the WFCO charger was really a fixed voltage, one stage charger and the PD was a decent three stage charger. That of course soured me on WFCO chargers.
Fast forward to today when I am considering replacing my AGMs with 300 Ahs of Li batteries. Do I need a new charger? I rarely charge with the converter as I don’t have shorepower where I store my RV and I don’t want to run the generator for just charging. Solar panels keep the batteries up just fine.
But when I do want to charge after I switch to Li, how will the PD work? It has the Charge Wizard feature which from what I have read holds the output at a high voltage for an hour to top off your batteries. This feature was probably designed for LA batteries, but wouldn’t it work the same to top off Li batteries?
Any thoughts or experiences would be appreciated.
David
Several years ago I noticed that the WFCO 9855 that came with my 2021 Axis was only charging at 5-10 amps into my 200 Ahs of AGM batteries when discharged to 70% SOC. I Replaced it with a PD9260 and the charging current shot up to 30-40 amps under similar conditions.
So I concluded that the WFCO charger was really a fixed voltage, one stage charger and the PD was a decent three stage charger. That of course soured me on WFCO chargers.
Fast forward to today when I am considering replacing my AGMs with 300 Ahs of Li batteries. Do I need a new charger? I rarely charge with the converter as I don’t have shorepower where I store my RV and I don’t want to run the generator for just charging. Solar panels keep the batteries up just fine.
But when I do want to charge after I switch to Li, how will the PD work? It has the Charge Wizard feature which from what I have read holds the output at a high voltage for an hour to top off your batteries. This feature was probably designed for LA batteries, but wouldn’t it work the same to top off Li batteries?
Any thoughts or experiences would be appreciated.
David
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