Product Description


As Lithium-Ion Batteries increase in popularity, WFCO knows that our customers want flexibility. The WF-9540LiS Lithium Switch
provides the most DC Circuits in the market (17) to allow for the growing number of DC devices needed in today’s large and luxury,
feature-packed motor homes and fifth wheels.

The Lithium Switch allows customers the versatility to change charging modes between lead-acid and lithium batteries by simply sliding a switch. Easy to use, the WF-9540LiS provides a convenient, long-term option that eliminates the hassle of swapping out a whole unit.

Exclusive choice of four DC circuit connection modes – Quick Connect Terminals, Screw Terminals, Wire Pigtails, or WAGO Connectors – allows installers to select their preferred wiring connection for speed and ease of installation. Additionally, the 9500LiS Series features a zero-clearance, front ventilation system so there is no wasted space around the unit.

Every model is designed to comply with FCC Class B, which means that the converters do not cause interference with televisions, radios, or other signals. The WF-9540LiS model also brings you the convenience of built-in AC and DC distribution. Two 50 Amp main AC breakers and a total of up to twelve AC branch circuits, when using duplex breakers, can be installed. Seventeen DC branch circuits, including three 30 Amp and fourteen 20 Amp, have LED lights that illuminate to indicate open circuits.


Additional Information

Converter Type

Power Center

Input Voltage/Hz

105-130 VAC, 60 Hz

Output Power


Charging Modes

2-Stage Intelligent Charge, 3-stage Intelligent Charge (VRLA/AGM)

Intelligent Charging Stages

Absorption, Bulk, Storage (VRLA/AGM)

Battery Adaptability

AGM, Lead Acid, Lithium-Ion

Voltage Output

13.2 – 14.6 VDC, 13.6 – 14.6 VDC

Bulk Charge Voltage (4 Hrs.)


Absorption Charge Voltage


Float Mode (Trickle Charge Voltage)

13.2V DC (trickle charge voltage)

Cooling System

2-Fans Zero Clearance

Efficiency (full load)


Overload Protection

Auto recovery on normal load, Current limiting & shutdown

Short Circuit Protection

Auto recovery on normal load

Over Temperature Protection

Auto recovery on normal load

Reverse Polarity Protection

Fuse Protected, Replaceable by fuse of same rating

Protection Features

Over Temperature, Overload, Reverse Polarity (fuse), Short Circuit

AC Main Breaker

50 A

AC Circuits (twin breakers)

Two- 50A Mains with up to 12 AC Branch Circuits

Built-in Strain Relief


DC Circuits (Quantity)

17 (3 30A Max & 14 20A Max)

Case Color


Case Material



FCC Class B compliant, UL

Input Current


Input Power



11.85″ W x 14.57″ H x 9.72″ D


7.71 lbs.

Warranty Period

Two Year Limited Product Warranty