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WFCO WF-9500LiS Series Power Converter

wfcotech.com/support/product-downloads

Last updated: 20 September 2026

What we found

  • Matched to 9 batteries, by setting each maker's published figures against the other — neither names the pairing.
  • 5 specifications are published for it, each with the source it was read from.
  • No matching recall was found in the records this catalogue holds from 7 regulators.

Assembled from the evidence on this page. Every figure and count below is shown with the source it was read from.

Other findings

Lithium absorption voltage
13.6 V absorption, held until the power is cycled

This is accomplished by reducing (from bulk mode) the output voltage to 13.6 VDC and remaining at this voltage until the power is cycled to the converter.

Source: forestriverinc.com/files/component-manuals/Electrical/WFCO - Power Converter Model WF-9500LiS Series Operator Manual.pdf

Lithium bank size caveat
Over 200 Ah may need the power cycled to restart bulk

If your application requires longer than 4 hours (such as a larger battery bank > 200 Ahr), a simple cycling of power will reset the timers.

Source: forestriverinc.com/files/component-manuals/Electrical/WFCO - Power Converter Model WF-9500LiS Series Operator Manual.pdf

Lithium bulk duration
Bulk runs 1–4 hours; the hour minimum is for cell balancing

For a full battery, the bulk stage has a minimum time requirement of 1 hour, which allows the lithium cells inside the battery the time required to “balance”. For an empty battery, the bulk stage has a maximum time requirement of 4 hours.

Source: forestriverinc.com/files/component-manuals/Electrical/WFCO - Power Converter Model WF-9500LiS Series Operator Manual.pdf

Lithium bulk voltage
14.6 V in bulk, in lithium mode

This is accomplished by boosting the output voltage to 14.6 VDC and allowing the maximum current to flow as required by the loads.

Source: forestriverinc.com/files/component-manuals/Electrical/WFCO - Power Converter Model WF-9500LiS Series Operator Manual.pdf

Lithium mode indicator
An amber LI light shows it is in lithium mode

When the switch is set to the Lithium mode, the amber LED at the top of the switch will be “on” indicating LI (Lithium).

Source: forestriverinc.com/files/component-manuals/Electrical/WFCO - Power Converter Model WF-9500LiS Series Operator Manual.pdf

United States — CPSC

We did not match this product to any recall in the data we hold from CPSC, last checked September 20, 2026. Check CPSC’s own search: cpsc.gov/Recalls

United States — NHTSA & Coast Guard

We did not match this product to any recall in the data we hold from NHTSA or the US Coast Guard, which we hold records from but do not yet check on a schedule. Check NHTSA’s own search: nhtsa.gov/recalls

European Union

We did not match this product to any recall in the data we hold from the European Union, last checked September 20, 2026. Check the European Union’s own search: ec.europa.eu/safety-gate-alerts/screen/search

United Kingdom

We did not match this product to any recall in the data we hold from the United Kingdom, last checked September 20, 2026. Check the United Kingdom’s own search: gov.uk/product-safety-alerts-reports-recalls

Australia

We did not match this product to any recall in the data we hold from Australia, last checked September 14, 2026. Check Australia’s own search: productsafety.gov.au/recalls

Canada

We did not match this product to any recall in the data we hold from Canada, last checked September 20, 2026. Check Canada’s own search: recalls-rappels.canada.ca/en/search

France

We did not match this product to any recall in the data we hold from France, last checked September 20, 2026. Check France’s own search: rappel.conso.gouv.fr

None of these is a statement that the product is safe or unrecalled — only that our searches found nothing. Each regulator’s own search is linked above.

Compatible batteries

Vehicles the manufacturer names for this charger

  • Forest River Prime Time AvengerManufacturer documented

    Forest River publish this converter's manual in the 2026 Avenger's own Electrical component list. They list THREE converters for the model — the WF-8700-AD, the WF-9500-AD and the WF-9500LiS — and do not say which floorplan or option package carries which, so this names what the maker documents for the model and not what is in any particular trailer. Read the part number off the front panel label of your own unit.