Upgrading to lithium or replacing a converter should not mean flipping switches or rewiring your panel. This power center automatically detects your battery type and charges it correctly without extra setup. Great Prices for the best power converter from WFCO. WFCO 40A Auto-Detect RV Power Center with 30A Main and 13 DC Circuits part number WFC72GR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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WFCO Power Converter
- WFC72GR
40 Amps
AGM
Gel
Lead Acid
Lithium
12V
WFCO
Converter and AC/DC Panel
Multi-Stage Charge
Automatic Switch
AC to DC
RV
Upgrading to lithium or replacing a converter should not mean flipping switches or rewiring your panel. This power center automatically detects your battery type and charges it correctly without extra setup.
Highlights
Charge Lithium or Lead-Acid Automatically: Auto-detect technology selects the correct charging profile.
Protect Your Battery Investment: Multi-stage charging helps reduce overcharging and undercharging.
Power Your Coach Loads Reliably: 40A DC output with stable AC input range.
Save Space in Tight Install Areas: Zero-clearance cooling design.
Manage AC and DC Circuits in One Panel: 30A main, up to 9 AC branch, and 13 DC fuse circuits.
Troubleshoot Faster: LED indicators and blown-fuse window show system status at a glance.
Features to know about
Auto-Detect Battery Charging
The built-in microprocessor recognizes whether your system uses lithium or lead-acid batteries and automatically applies the correct charging profile. There are no switches to flip or modes to select when upgrading or replacing batteries.
Zero-Clearance Cooling Design
Front-to-front airflow and a 2-speed fan allow this power center to operate without rear clearance. That makes it easier to install in tight RV compartments while keeping components cool under load.
Specs
Input:
Voltage: 105-130 VAC, 60 Hz
Current: 8A
Power: 685W
DC Output:
40A (lead-acid)
40A or 37A (lithium-ion)
Charging Profiles:
Lead-acid: 3-stage intelligent charging
Lithium-ion: 2-stage intelligent charging
Lead-acid voltage range: 13.2V to 14.4V DC
Lithium voltage range: up to 14.6V DC
Bulk: 14.4V (up to 4 hours)
Absorption: 13.6V
Float: 13.2V
Distribution:
AC main breaker: 30A
AC circuits: 10 total (1 main + up to 9 branch)
DC circuits: 13 (three 30A max, ten 20A max)
Dimensions:
Overall: 9-5/8" wide x 13" tall x 8-7/16" deep
Rough opening: 7-13/16"W x 11-5/16"H x 7-3/8"D
Weight: approximately 5 lbs
Certifications:
UL listed
FCC Class B compliant
2-year limited warranty
WF-8540-AD-S WFCO 40A Auto-Detect RV Power Center with 30A Main and 13 DC Circuits
WARNING: This product contains chemicals, including lead, known to the State of California to cause birth defects or other reproductive harm. Wash hands after handling. For more information, go to www.p65warnings.ca.gov.
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Hey Jeff - yes, you absolutely can switch brands as long as you match the service rating and verify the cutout size so you don't have to make big changes to the cutout (trimming or filling a gap).
All three of these models you were looking at - # WF46FR 40A horizontal, # WF86FR 55A horizontal, and # WFC72GR 40A vertical - are designed for standard 30A shore power setups. Not the heavier duty 50A found in bigger RVs.
I recommend checking your cabinet opening size and orientation so you... view full answer...
Hey there Kevin, if you’re trying to avoid trimming or adding filler panels, matching orientation is the safest move, and it really comes down to checking the cutout size or the model converter you currently have.
If your current panel is vertical (taller than wide), the # WFC72GR 40A is a common size, fitting a cutout of 7 13/16" Wide x 11 5/16" tall x 7 3/8" deep.
If it’s more standard horizontal setup (wider than tall), then the # WF86FR 55A is a common size, fitting a cutout of 12-3/16"... view full answer...
Good morning Dana.
With a 300Ah lithium bank, a 40A converter / power panel like the one in the WFCO # WFC72GR will work - but recharge times will be longer compared to a higher-output unit. It really depends on what battery bank you have, and if you plan to stay hooked up to shore power or use a generator for a few hours where the batteries will need to charge up quickly.
If your cabinet allows for the larger horizontal opening, the # WF86FR 55A will recharge a larger battery bank noticeably... view full answer...
Hello Ryan, that’s where the WFCO rv converter / power distribution panel # WFC72GR really stands out.
While both the # WF46FR and # WF86FR give you standard AC/DC distribution, the # WFC72GR provides:
-13 DC circuits (3 at 30A max, 10 at 20A max)
-Up to 9 AC branch circuits, 1 main 30a AC circuit.
It’s designed for builds that need more circuits like in your situation.
Just note it has a different footprint than the others - rough opening is 7-13/16 inch Wide x 11-5/16 inch Tall x 7-3/8... view full answer...
Happy to help Bruce,
For a trailer conversion, a solid option is the WFCO 40A Auto-Detect Power Center # WFC72GR, it combines the 120V breaker panel, 12V fuse panel and converter/charger into one unit and supports both lead-acid and lithium batteries.
To complete the setup, you'll also need:
30 Amp Power Inlet # A10-30INBKVP
30 Amp Shore Power Cord # A10-3025EDBK
If you'll only be plugging into campground power, you won't need a transfer switch. Those are only necessary when switching... view full answer...
Hey Daniel! That’s one of the benefits of these newer WFCO Auto-Detect panels. You won't need to replace anything again since they are compatible with lithium.
The new models like # WF46FR, # WF86FR, and # WFC72GR all automatically detect lithium batteries and apply the proper charging profile. No switches or internal settings required.
If you’re planning a larger bank 200Ah+, you may eventually wish you had gone with the 55A model for faster recovery - but functionally, the 40A unit... view full answer...
Hey Kevin! With power centers, fitment matters just as much as amperage.
Here’s a quick breakdown on the cut-out that is required for a few popular models that work on 30A hookup:
- # WF46FR (40A – horizontal layout) Rough opening: 10-3/8" Width x 4-1/8" Depth x 7" Height
- # WF86FR (55A – horizontal layout) Rough opening: 12-3/16" wide x 11" tall.
- # WFC72GR (40A – vertical layout) Rough opening: 7-13/16" Width x 7-3/8" Depth x 11-5/16" Height
So before choosing based on charging capacity,... view full answer...
Hi Brandon, with two 12V batteries wired in parallel, stepping up to the WFCO RV converter AC/DC power center # WF86FR 55A makes sense. The extra 15 amps of DC charging capacity helps recover the bank faster - especially if you need to charge quickly such as on short generator runs.
One thing I'd check is your converter cutout space to make sure you won't have to do lots of trimming or modifications (sometimes it is inevitable though). This unit requires a hole sized to 12-3/16" wide x... view full answer...
Not a problem at all, Kyle.
The WFCO RV converter power panel # WFC72GR is still a 30A main breaker power center. The “40A” rating refers to DC charging output - not shore power input. I know, it's confusing haha.
The vertical orientation simply gives you more DC fuse circuits 13 total and more AC branch options. It installs taller than wide, so just make sure your cabinet opening supports the cutout requirement of 7-13/16" wide x 7-3/8" deep x 11-5/16" tall.
If it's going to require... view full answer...
Hey Ryan! Yes - that’s actually where the WFCO RV Converter / Power Center # WFC72GR really shines.
It provides:
-13 DC fuse circuits (3 circuits rated up to 30A, 10 circuits rated up to 20A)
-Up to 9 AC branch circuits
-30A main breaker
That bigger DC fuse layout makes it ideal for additional circuits like slide-outs, powered stabilizers, extra lighting, stereo systems, cameras, etc.
Because it installs vertically, it fits cabinets that are taller than wide. The cutout size required... view full answer...
Hey Chris - if your existing panel is taller than it is wide, that usually means you’re looking for a vertical-style replacement.
The WFCO # WFC72GR 40A power distribution panel installs in a vertical orientation and requires a rough opening of: 7-13/16 inch Width x 7-3/8 inch Depth x 11-5/16 inch Height
That taller layout makes it ideal for cabinets or cutouts where width is limited but height is available.
What are the rough measurements of your cutout? I can make sure this is the... view full answer...
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