Last updated: 20 October 2026
Battery and charging
- Input voltage
- 105-130 Volts
- Charger output voltage
- 13.6 VDC
“Make sure the converter is plugged into an AC source (105-130 Volts)”
Source: wfcotech.com/wp-content/uploads/2021/02/Updated-9500LiS-Series-Manual-RP.pdf
“In this mode an output of 13.6 VDC is provided to the DC circuits in the RV.”
Source: wfcotech.com/wp-content/uploads/2021/02/Updated-9500LiS-Series-Manual-RP.pdf
Other findings
- Lithium absorption voltage
- 13.6 V absorption, held until the power is cycled
- Lithium bank size caveat
- Over 200 Ah may need the power cycled to restart bulk
- Lithium bulk duration
- Bulk runs 1–4 hours; the hour minimum is for cell balancing
- Lithium bulk voltage
- 14.6 V in bulk, in lithium mode
- Lithium mode indicator
- An amber LI light shows it is in lithium mode
“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
“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
“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
“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
“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
Compatible batteries
These batteries are here because the published figures line up, not because anyone has said they go together — that is our reading of two documents that never mention each other, not a claim by either maker and not a test by us. Even where every figure agrees, these are not established:
- Which charge profile the charger is actually set to — several publish four or more, and only one of them is this pack’s chemistry
- What it holds the pack at once bulk charging ends, which is a different figure from the one it boosts to, and which some profiles do not apply at all
- The charge current the pack will accept, against what the charger delivers into it
- Whether the charger can restart a pack its own BMS has already disconnected
- The wiring in between — where a converter feeds a distribution panel, the pack is one load on a circuit rather than a device on the end of a lead
Worth confirming with the charger's manufacturer or a dealer before buying.
Renogy state this pack's charge voltage as 14.4 V — their datasheet reads "Charge Voltage 14.4V". Set to lithium, WFCO's manual for this converter says it reaches 14.6 VDC in bulk: "boosting the output voltage to 14.6 VDC and allowing the maximum current to flow as required by the loads." That is at or above the figure the pack asks for, where the same maker's WF-8900 tops out at 14.4 V. Bulk runs between one and four hours — the one-hour minimum is for cell balancing rather than charge — and absorption then holds 13.6 V. The lithium profile is selected by a switch on the unit, and an amber LI light shows it is in that mode. Neither company names the other, and nobody has tested this pairing.
Redodo state this pack's charge voltage as 14.4 ± 0.2 V — their datasheet reads "Charge Voltage: 14.4V±0.2V". Set to lithium, WFCO's manual for this converter says it reaches 14.6 VDC in bulk: "boosting the output voltage to 14.6 VDC and allowing the maximum current to flow as required by the loads." That is at or above the figure the pack asks for, where the same maker's WF-8900 tops out at 14.4 V. Bulk runs between one and four hours — the one-hour minimum is for cell balancing rather than charge — and absorption then holds 13.6 V. The lithium profile is selected by a switch on the unit, and an amber LI light shows it is in that mode. Neither company names the other, and nobody has tested this pairing.
Set to lithium, WFCO's manual for this converter says it reaches 14.6 VDC in bulk: "boosting the output voltage to 14.6 VDC and allowing the maximum current to flow as required by the loads." That is at or above the figure the pack asks for, where the same maker's WF-8900 tops out at 14.4 V.
Bulk runs between one and four hours — the one-hour minimum is for cell balancing rather than charge — and absorption then holds 13.6 V.
The lithium profile is selected by a switch on the unit, and an amber LI light shows it is in that mode.
Neither company names the other, and nobody has tested this pairing.
Source: forestriverinc.com/files/component-manuals/Electrical/WFCO - Power Converter Model WF-9500LiS Series Operator Manual.pdf
Renogy state this pack's charge voltage as 14.2 V — their datasheet reads "Charge Voltage 14.2V".
- Redodo 12V 100Ah HeatingFigures comparedView battery: Redodo 12V 100Ah Heating →
- Epoch Batteries 12V 100Ah Eco SeriesFigures comparedView battery: Epoch Batteries 12V 100Ah Eco Series →
Epoch Batteries state this pack's charge voltage as 14.2 V to 14.4 V — their datasheet reads "14.2V - 14.4V".
- Epoch Batteries C12460A 12V 460Ah Battery SystemFigures comparedView battery: Epoch Batteries C12460A 12V 460Ah Battery System →
Epoch Batteries state this pack's charge voltage as 14.6 V — their datasheet reads "14.6".
Vehicles the manufacturer names for this charger
- Forest River Prime Time AvengerManufacturer documentedView platform: Forest River Prime Time Avenger →
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.
Source: forestriverinc.help/#/primetimerv/guide/2026/3806-avenger/browse/component-manuals/Electrical
Sources
- WFCO WF-9500LiS Series Power Converter Operator ManualManufacturer document
WFCO Technologies
Source: forestriverinc.com/files/component-manuals/Electrical/WFCO - Power Converter Model WF-9500LiS Series Operator Manual.pdf
Retrieved September 20, 2026
- 2026 Prime Time Avenger — Electrical component manualsManufacturer document
Forest River
Source: forestriverinc.help/#/primetimerv/guide/2026/3806-avenger/browse/component-manuals/Electrical
Retrieved September 20, 2026
- Archived document
Source: wfcotech.com/wp-content/uploads/2021/02/Updated-9500LiS-Series-Manual-RP.pdf
Retrieved October 20, 2026