Terminal Size for 4 AWG Wire on a Progressive Dynamics Converter
Updated 07/31/2026 | Published 07/22/2026
Products Featured in This Question
Question:
I have a PD4045PK and purchased the PD4045CSV from etrailer as a replacement converter for my lithium battery upgrade. I am looking to upgrade the wiring from the battery to the terminals on the mighty mini and wanting to know what terminal size fits properly? I am looking to upgrade to 4awg as I see other responses from your team indicate 4awg is the largest to use. Thank you.
asked by: Blake K
Expert Reply:
Hey Blake!
Upgrading to 4 AWG wire is a great choice to run from your battery to the terminals on your power center. That'll help to minimize any voltage drop happening along the run of wire between the battery and the converter. You will use 1/4" eyelet terminals for the 4 AWG wiring to match up with the battery connections. You can use Spectro Ring Terminal # SWC57025 for that and you'll just want to make sure the cables are properly crimped and routed to protect from chafing. You'll also want to confirm your fuse or circuit breaker is sized appropriately for the wiring change.
How long is your battery cable run from the battery to the power center?
Product Page this Question was Asked From
Progressive Dynamics 4000 Series Mini RV Converter w/ Charge Wizard and AC/DC Distribution Panel
- Power Converter
- Converter and AC/DC Panel
- Manual Switch
- 12V
- 45 Amps
- AC to DC
- AGM
- Gel
- Lead Acid
- Lithium
- RV
- Multi-Stage Charge
- Progressive Dynamics
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Victron Phoenix VE.Direct Inverter - NEMA 5-15R - 1,000 Watts - 12V
- Q&A: Troubleshooting Weak Brakes on Tandem Axle Trailer
- Q&A: Recommended Replacement Converter for a Elixir ELX-45
- Q&A: Is There a Lithium Converter Replacement for the WFCO WF-8735P
- Q&A: Can 45 Amp Progressive Dynamics Panel Replace a 30 Amp Panel
- Q&A: Solution to Replace WFCO 8735P to Charge Lithium Batteries
- Q&A: What Replacement Converter Do I Need for a Series 7300 Model 7345 Converter?
- Q&A: What is the Difference Between the Progressive Dynamics PD4045KA and PD4045KV Converters
- Article: Trailer Wiring Diagrams
- Article: What are the Common Types of Propane Fittings Used on RVs?
- Article: 30-Amp and 50-Amp RV Service: What's the Difference?
- Article: How to Measure for Travel Trailer and Fifth Wheel Steps
- Article: Trailer Lighting Requirements
- Article: Redarc Tow-Pro Elite Full Review
- Article: How Does an RV Water Pump Work?
Micheal
7/29/2026
This unit worked great in my Lance 1181 it has the ability to charge lithium or led acid batterys I have a solar panel charger but agree with your choice in upgraded wiring. The panel and converter were a great match and E-trailer experts have given me great advice on my panel and flat tow needs