Hoiedt RV Power Converter WF-8955-AD-MBA 55A 13.6V Main Board — 3-Stage Charging, Quiet Cooling

The Hoiedt WF-8955-AD-MBA is a 55-amp, 13.6V RV power converter main board designed to replace WF-8955 series units and reliably convert AC shore power to DC battery charging for travel trailers.

This direct-replacement main board assembly restores on-board DC power and three-stage battery charging in compatible RVs and power centers. Engineered to meet original-equipment voltage standards, the WF-8955-AD-MBA supports both lead-acid and lithium-ion batteries and is compatible with a number of WF and Parallax series converters. It prioritizes efficient charging, quiet cooling, and built-in electrical protections to keep RV systems stable while parked or connected to shore power.

How does this converter board restore my RV's electrical system?

Installed in place of the failing or damaged main board, the WF-8955-AD-MBA reestablishes AC-to-DC conversion and delivers steady DC output to the RV's 12V circuits and battery bank. It uses a three-stage charging algorithm to charge batteries more efficiently than a basic single-stage charger.

• Output current: 55 A and output power up to 950 W for typical RV loads.
• Nominal charging voltage: 13.6 V to maintain battery health.
• Three-stage charger stages: bulk, absorption, float for balanced charging.
• Compatible with lead-acid and lithium-ion battery chemistries.

Which RV models and converter series will this main board work with?

The WF-8955-AD-MBA is designed as a direct replacement for multiple models and power centers, simplifying repairs without major rewiring. It fits common WF-8955 family members and several Parallax power center units used in many travel trailers.

• Direct compatibility: WF-8955, WF-8955-MBA, WF-8955-AD-MBA, WF-8955AN.
• Also compatible with: WF-8900, WF-8900-AD, WF-8955PEC series.
• Interchangeable with Parallax 7145 and 7155 power center main boards.
• Simplifies repairs by matching voltages and connector arrangements to originals.

What protections and design features keep the unit safe and quiet?

This converter board integrates multiple electrical safeguards and a thermal-controlled fan so the unit operates reliably under varying loads. The housing is built from durable aluminum alloy to aid heat dissipation and extend service life.

• Protections include over-voltage, overload, overheating, overcurrent, leakage, and short-circuit safeguards.
• Thermal fan runs only when needed to reduce noise and power draw.
• High-strength aluminum alloy shell improves cooling and durability.
• Simple wiring: typically two screws, three AC wires, and two DC wires for installation.

How easy is installation and who should install it?

Physical replacement is straightforward when your replacement board matches the original part number, and the common wiring layout keeps labor minimal. For safety and warranty alignment, professional installation is recommended unless you are experienced with RV electrical work.

• Typical installation requires only two mounting screws and a few AC/DC wire connections.
• Interchangeable part numbers: WF-8955PEC and WF-8955-AD-MBA make sourcing simpler.
• Professional installation ensures correct settings and secure connections.
• Always disconnect shore power and batteries before beginning service.

Who is this for? The Hoiedt WF-8955-AD-MBA main board is for RV owners, technicians, and fleet maintainers who need a reliable, OEM-compatible replacement for failing WF-8955-series converter boards. It suits travel trailers and power centers that require a 55A, 13.6V charging solution with built-in protections and quiet operation. Choose this unit when you want a direct-fit repair that restores three-stage charging and long-term durability without complicated modifications.