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Is There a Lithium Converter Replacement for the WFCO WF-8735P  

Question:

Do you have a Lithium power converter replacement that will fit the WFCO WF-8735P power panel?

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Expert Reply:

I spoke with Progressive Dynamics and they informed me that you cannot replace just the converter section and you would need a new panel, the Progressive Dynamics Mighty Mini AC/DC Panel and Converter/Smart Charger part # PD4045KA.

The Progressive Dynamics Mighty Mini AC/DC Panel and Converter/Smart Charger now comes with a lithium switch.

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Conner L
Matt R. profile picture

Matt R.

11/15/2021

You’re suggesting replacing a 35 amp panel with a 45 amp panel. Why? Wouldn’t Progressive Dynamics panel # PD 4135k be a better replacement? Replacing a 35 amp for a 35 amp. It can be used with lithium ion batteries and lead acid batteries with a flip of a switch built into the panel.

LesD profile picture

Les D.

11/22/2021

According to Progressive Dynamics website the PD4135 Power Center is the direct replacement for the WFCO 8735 and includes Lithium charging. However, if you had multiple high amp-hour batteries you may want the 45-amp model to charge those batteries in typical time.
KurtL profile picture

Kurt L.

2/24/2022

I'm considering making the same change. If the existing converter is 35 amp, will upgrading to a 45 amp converter require potential changes to the wiring?
LesD profile picture

Les D.

2/24/2022

I spoke with my contact at Progressive Dynamics about your inquiry and he said that if you upgraded from 35 amp to 45 amp, then your 45 amp (charging amperage to batteries) charger would need 8 to 6 gauge wire especially if Lithium charge levels. Your trailer may already be wired for with sufficient wires. This also depends on the distance from the charger to the batteries. Shorter distances may only require lighter gauge wire.

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