Your Progressive Dynamics converter needs either a lithium-compatible charge wizard upgrade (PD9160ALV) or complete replacement with a modern lithium-capable charger like the AIMS or Progressive Dynamics PD9200 series.
Replacing an F53 rear pinion seal requires specialized tools including a 1-inch drive socket, torque multiplier, and seal pullers. This is a complex 6-8 hour job that many RV owners should consider having done professionally due to the precise torque requirements and driveline balancing concerns.
Your Renogy lithium batteries showing different charge percentages indicates a communication or cell balancing issue. Check wiring connections, perform a manual balance cycle, and consider firmware updates through Renogy's app.
Motorhome E4OD may use different torque converter than truck version for heavier loads. Verify with supplier using your specific application. Provide year, engine, and motorhome designation when ordering. Replace all frictions and bushings during rebuild.
Store lithium batteries indoors above 32F at 40-60% charge. Wisconsin basement temperatures (55-65F) are ideal. Never charge lithium batteries below freezing - this permanently damages cells. Check voltage every 2-3 months during storage.