GEARCESS WF-8955-AD-MBA RV Power Converter Main Board Assembly – 55 Amp (Parallax 7155/7145 Ready)

Overview

Upgrade your RV electrical system with the GEARCESS WF-8955-AD-MBA power converter main board assembly. Delivering up to 55 amps and a 13.6 V DC output, this module is designed to work with WF-8955 and WF-8900-AD series converters and is compatible with Parallax 7155 and 7145 power centers. It’s a practical solution for keeping a variety of devices powered in an RV, trailer, or camper without replacing the entire power center.

Smart, adaptive charging for varied batteries

The auto-detect feature identifies battery type and chemistry, then automatically adjusts the charging mode. This helps optimize charging without overcharging or undercharging, and it minimizes interference with other onboard electronics like TVs or radios for a smoother journey.

Three-stage charging for flexible energy management

Transition beyond single-stage charging with three nominal output modes suitable for both lead-acid and lithium-ion batteries. This approach supports different charging needs while protecting battery health and extending service life. A redesigned, quieter cooling fan operates only when needed, contributing to a calmer travel environment.

Key specifications and protection

• Power: up to 950 Watts with a 55 A output
• Output voltage: 13.6 V DC; Input voltage: 105–130 VAC, 60 Hz
• Quiet cooling fan that activates as required to maintain efficiency

Safety, reliability, and easy integration

• Built with overcharge, overvoltage, overcurrent, high-temperature, and short-circuit protections
• Specialized cooling system design lowers noise by design and keeps performance stable
• Deck-mount compatibility with a quick-install workflow—no rewiring needed; you can typically install in about 10 minutes with two screws and a few wires

Practical benefits for the road

In day-to-day RV life, this main board assembly can help power essentials like lighting, charging stations, and small appliances while you stay off-grid or on a basic hookup. The combination of automatic detection, staged charging, and protective features provides a dependable upgrade path for compatible power centers.

Compatibility and use cases

Designed to fit WF-8955-AD-MBA, WF-8955, WF-8900-AD, WF-8955-MBA, and WF-8955PEC series converters, with seamless compatibility for Parallax 7155 and 7145 power centers. It’s a thoughtful upgrade for RV enthusiasts seeking a robust, space-efficient power solution.