WFCO 8955 Lithium Upgrade: Compatibility & Options

Is Your Model Already Lithium-Compatible?

Not every WF-8955 variant supports lithium. Before you buy a replacement, identify your exact model by looking at the label on the back of the power center. Find the model number and note any suffix.

The matrix below shows which WFCO 8955 models work with lithium batteries and how.

Model	Lithium Ready	Auto-Detect	Configuration	Source
WF-8955	No	No	Lead-acid only; WFCO directs lithium buyers to upgrade solutions	wfcotech.com product listing
WF-8955E	No	No	Lead-acid only; WFCO directs lithium buyers to upgrade solutions	wfcotech.com product listing
WF-8955EB	No	No	Lead-acid only; WFCO directs lithium buyers to upgrade solutions	wfcotech.com product listing
WF-8955-AD	Yes	Yes	Auto-detect lithium and lead-acid; charges at 13.2 to 14.6 VDC profile	wfcotech.com WF-8955-AD spec page
WF-8955-AD-MBA	Yes	Yes	Replacement board assembly (55A). Auto-detects battery type and adjusts charge profile automatically. Bulk 14.4V, Absorption 13.6V, Float 13.2V.	wfcotech.com WF-8955-AD product page
WF-8955-AD-REP	Yes	Yes	Converter replacement kit (microprocessor + board, 55A total), not a complete power center housing. Auto-detects battery type and applies correct charge profile. Rated 940W per WFCO's spec sheet and product page (Amazon's retail listing for this SKU states 950W; confirm against the current wfcotech.com spec sheet before relying on either figure).	wfcotech.com WF-8955-AD product page; Amazon listing (wattage discrepancy noted)
WF-8955LiS	Yes	No	Manual lithium switch (not auto-detect). Technician or owner manually selects lead-acid or lithium mode before use.	wfcotech.com product listing
WF-8955ELiS	Yes	No	Manual lithium switch (not auto-detect). Technician or owner manually selects lead-acid or lithium mode before use.	wfcotech.com product listing
WF-8955PEC	Unknown in WFCO catalog	No	Found only in Progressive Dynamics cross-reference as a WFCO equivalent. Does not appear in WFCO's direct product search. If you have this model, contact WFCO support directly.	progressivedyn.com converter cross-reference guide

How to read this table: If your model is WF-8955, WF-8955E, or WF-8955EB (base models), you have a lead-acid-only converter. If it is WF-8955-AD or WF-8955-AD-MBA or WF-8955-AD-REP, you have auto-detect technology built in and are ready for lithium now. If it is WF-8955LiS or WF-8955ELiS, you have a manual switch and must set it correctly before connecting lithium. If you see WF-8955PEC on your label, cross-reference with WFCO support since that model does not appear in WFCO's public catalog.

Replacement and Upgrade Options

If you have a base WF-8955 or WF-8955E and want to add lithium capability, you have four main paths.

Option 1: WF-8955-AD-MBA (Board Assembly Only)

What you get: The replacement board assembly with auto-detect technology. This is the upgrade-in-place option if your existing power center housing is in good shape.

Part number: WF-8955-MBA
Output: 55 amps at 13.2 to 14.6 VDC (lithium range)
Auto-detect: Yes. Recognizes lithium and lead-acid automatically without user input.
Charge profile: Bulk 14.4V DC, Absorption 13.6V DC, Float 13.2V DC
Installation: Requires opening the power center and swapping the board. Suitable for someone comfortable with 12V DC wiring.
Cost factor: Lower cost than full replacement, but assumes housing and other components are serviceable.
Lithium compatibility: Yes, full support

Option 2: WF-8955-AD-REP (Converter Replacement Kit)

What you get: A replacement converter/charger kit with auto-detect technology, built to install into your existing power center housing. This is a converter replacement kit, not a complete power center enclosure -- Amazon's own listing title for this part identifies it as a "Converter Replacement Kit." If you need the full housing (breaker panel, distribution box, and enclosure), confirm with WFCO or your retailer which part number covers that before ordering.

Part number: WF-8955-AD-REP
Output: 50 to 55 amps
Power: 940W per WFCO's spec sheet and product page. Amazon's retail listing for this SKU states 950W. Treat 940W (manufacturer spec sheet) as the primary number and confirm against the current wfcotech.com listing before relying on either for a load calculation.
Auto-detect: Yes. Current-generation microprocessor logic recognizes lithium and lead-acid automatically.
Charge profile: Lead-acid/AGM mode uses WFCO's three-stage profile (Bulk 14.4V DC, Absorption 13.6V DC, Float 13.2V DC). Lithium mode uses a separate two-stage profile (Charge Mode 14.6V DC, Power Mode 13.6V DC), per WFCO's manual section "Lithium Two-Stage Smart Charging." These are not the same profile.
Warranty: WFCO provides a 2-year warranty per FAQ
Mounting: Standard power-center footprint; check your existing cutout before ordering
Installation: Requires disconnecting shore power, unbolting the old unit, and removing/installing all wiring. Typically a technician install.
Cost factor: Higher than board-only, but gives you a fresh, warranted system.
Lithium compatibility: Yes, full support. Built for auto-detect from the factory.
Manufacturer list price: $309.99 (as of 2026-09-18, per wfcotech.com)

Option 3: Progressive Dynamics PD4655V

What you get: An alternative converter from a different manufacturer, marketed as a WFCO 8955 equivalent.

Part number: PD4655V
Output: 55 amps
Auto-detect: No. This unit uses a 3-pin internal jumper to set the charge profile. The jumper must be set manually by a qualified technician: "center-to-LI" for lithium, or to the other pin for lead-acid.
Lithium support: Yes, with configuration. Per Progressive Dynamics' technical documentation, the PD4655V supports LiFePO4 when the jumper is set to the lithium position. Units made after January 2023 ship set to 14.4 VDC (lithium-ready default). Older units may require jumper adjustment.
Key difference from WFCO-AD models: The PD4655V is not an auto-detect unit. There is no automatic battery-type sensing. The jumper position is fixed until changed. This is a usability difference, not an incompatibility. You get full lithium capability; you set it once and it stays set.
Jumper adjustment: Do not attempt to move the jumper yourself unless confident with DC board work and power disconnection. WFCO or Progressive Dynamics support can walk you through it, or a qualified technician can perform the change. Improper placement causes incorrect charge voltages and battery damage.
Charge profile when set to lithium: The unit maintains 14.6V (or 14.4V, depending on manufacture date) for LiFePO4 requirements.
Lithium compatibility: Yes, verified in manufacturer primary docs (progressivedyn.com FAQ, cross-reference, 4600 jumper manual). Full support with manual jumper configuration.

Option 4: Progressive Dynamics PD9160ALV (LiFePO4-Specific Unit)

What you get: A converter designed from the ground up for lithium batteries, with no lead-acid option.

Part number: PD9160ALV
Output: 60 amps
Auto-detect: No, and not needed. This unit is lithium-only.
Charge profile: Preset for LiFePO4 charging (absorption 14.6V, float 13.2V, bulk current limited to prevent BMS cutoff).
Best for: RV owners fully committed to lithium with no lead-acid legacy equipment.
Lithium compatibility: Yes, 100%. The entire design is optimized for LiFePO4. No jumper configuration needed.
Cost factor: Premium pricing for a lithium-dedicated unit.
When to choose this: If you are certain you will never go back to lead-acid, this eliminates jumper-misconfiguration risk.

What Auto-Detect Models (WF-8955-AD) Can Do That Others Cannot

The WF-8955-AD board and replacement kit use microprocessor-based battery-type detection. When you first plug in a lithium battery, the converter measures the open-circuit voltage and charge acceptance curve, identifies the battery chemistry, and automatically selects the correct charge profile. If you later swap to lead-acid, it will re-detect and switch back. This is genuine convenience: no jumpers, no technician visit, no misconfiguration risk.

The PD4655V is fully capable of charging lithium correctly, but only once the jumper is set and stays set. The PD9160ALV is also fully capable, but assumes you will never use lead-acid again. Neither has the auto-switching behavior of the WF-8955-AD.

Confirm Your Exact Model Before Ordering

Look at the label on the back or bottom of your power center:

Is there a suffix after "8955"? (Look for "-AD", "-MBA", "-REP", "LiS", "ELiS", or "PEC".)
Is there a WFCO name and model on the label, or do you see "Progressive Dynamics" or another brand?
Write down or photograph the exact model number.

If you see WF-8955 with no suffix, you have a base unit and need an upgrade. If you see WF-8955-AD, you are already done and ready for lithium without replacement. If you see WF-8955LiS or WF-8955ELiS, you have the manual-switch version and are ready for lithium, provided you set the switch to "lithium" before connecting a lithium bank.

No-Cost Confirmation: Check Your Existing Unit First

Before spending money on a replacement, verify what you have:

Turn off shore power and main breaker.
Locate the label on the back panel of your power center.
Note the exact model number (e.g., "WF-8955", "WF-8955-AD", "WF-8955LiS").
Cross-reference against the matrix above.
If your model is WF-8955-AD, WF-8955-AD-MBA, WF-8955-AD-REP, WF-8955LiS, or WF-8955ELiS, you already have lithium capability. No replacement required. If it is base WF-8955, WF-8955E, or WF-8955EB, you will need an upgrade when you add lithium.

Many RV owners install lithium batteries without realizing their converter is already auto-detect capable, then buy an unnecessary replacement. Checking the label first saves hundreds of dollars.

Charge Profile Specifications for the WFCO-AD Models

The WF-8955-AD auto-detect converters run two separate, differently-named charge programs depending on which battery chemistry they detect. Applying the lead-acid profile to a lithium bank (or vice versa) defeats the purpose of the auto-detect feature.

Lead-acid and AGM mode ("Three-Stage Smart Charging"):

Charge Mode (bulk): 14.4V DC
Power Mode (absorption/normal operating voltage): 13.6V DC
Storage Mode (float/trickle): 13.2V DC
Maximum output current: 50 to 55 amperes

Lithium mode ("Lithium Two-Stage Smart Charging"):

Charge Mode: 14.6V DC, held one to four hours depending on battery state and load, to balance the lithium cells
Power Mode: 13.6V DC, the default/resting voltage
Maximum output current: 50 to 55 amperes

Source for both profiles: WFCO's WF-8900-AD Series Power Center manual, sections "Lead Acid & AGM Three-Stage Smart Charging" and "Lithium Two-Stage Smart Charging." The lithium charge-mode voltage (14.6V) is higher than the lead-acid bulk voltage (14.4V) -- these are not the same number despite both landing in a similar range. Battle Born, Renogy, and other lithium packs specify absorption/charge voltage in the 14.2 to 14.6V range and a resting/float voltage in the 13.2 to 13.6V range, so the WF-8955-AD's lithium mode (14.6V / 13.6V) lands within published battery tolerances -- but verify against your specific battery's manual, since some models cap absorption lower than 14.6V.

Why WFCO Points Base Models to "Lithium Ready Solutions"

If you look at WFCO's web pages for the base WF-8955 or WF-8955E, you will see text saying "For a lithium ready solution, click here." This is WFCO's way of acknowledging that those models are lead-acid-only. They are not broken; they simply lack the microprocessor logic to auto-detect battery type. The company actively directs customers who need lithium to the -AD variants or aftermarket solutions like the PD9160ALV.

Summary: Which Option Is Right for You?

You have WF-8955-AD (or -MBA or -REP) already: Do nothing. You are ready for lithium right now.

You have WF-8955LiS or WF-8955ELiS: You are ready for lithium, but you must set the manual switch to "lithium" before connecting a lithium bank. Do not switch back and forth without turning off power.

You have base WF-8955, WF-8955E, or WF-8955EB, and you want lithium: Choose one of the four upgrade paths above. The WF-8955-AD-REP is the most straightforward if you want a new unit with warranty. The WF-8955-AD-MBA is the most economical if your existing power center housing is sound. The PD4655V is a solid alternative from a different manufacturer if you prefer jumper-based configuration. The PD9160ALV is ideal if you are all-in on lithium and never want to support lead-acid again.

You have WF-8955PEC and are unsure: Contact WFCO support at wfcotech.com/support/faq. Provide the full label information, and they will tell you the exact lithium upgrade path for your unique model.

Where to Buy

Converter Replacement Kit

WFCO WF-8955-AD-REP Converter Replacement Kit

Auto-detect converter/charger replacement kit for the WF-8955 power center (lithium and lead-acid). 940W per WFCO spec sheet (Amazon lists 950W; confirm current spec before relying on either figure), 50/55A output, 2-year warranty. Installs into your existing power center housing, not a standalone enclosure.

Check Current Price on Amazon

Board Assembly Only

WFCO WF-8955-AD-MBA Replacement Board Assembly

Replacement board assembly for the WF-8955 power center. 55A, auto-detects lithium and lead-acid. Lower cost than the full kit when the existing housing is in good shape.