Buying Guide
6 Best RV Converter Chargers for Lithium Batteries in 2026: A Practical RV Guide
Six RV converter chargers for lithium batteries compared by charge mode switching, 55 to 100 amp output, and lithium voltage, with picks from $60 to $269.
By Hardcastle's RV Editors
11 min read6 products evaluated
Swapping lead-acid for lithium is only half the upgrade. The converter charger decides how fast that new bank refills on shore power or a generator, and whether it ever reaches a true full charge. Many factory converters hold a single 13.6V output that suits lead-acid storage but leaves LiFePO4 cells sitting well short of full.
This roundup focuses on the charger side of the job: how each unit switches into a lithium profile, what voltage it uses to bulk charge, and how much current it can push. We picked six units from a 55 amp manual-mode replacement up to 100 amp chargers built for big banks and generator runs, so you can match charge speed to how you actually camp.
Hardcastle’s RV field notes
The Rig Fit Check
A quick way to connect the shortlist to the space, workload and ownership details that matter after the box arrives.
- Start with the job
- Progressive Dynamics PD9360V 9300 Series 60 Amp Converter leads this shortlist for most trailer owners with 100 to 300Ah lithium. Use that fit as a reference point, then compare the alternatives against your own space and workload.
- Specs that separate the picks
- The first details to compare are 60A, 1000W input, 100A regulated output, 65A, 4-stage charging. Confirm the exact model and included components before ordering.
- Trade-off to plan for
- Priciest charger in this comparison
The Practical Shortlist
A road-tested-thinking look at 6 options, organized around the job each one suits best.
Best Overall
Progressive Dynamics PD9360V 9300 Series 60 Amp Converter
most trailer owners with 100 to 300Ah lithium
Our take Check price for Progressive Dynamics PD9360V 9300 Series 60 Amp Converter (opens in a new tab)
Best High-Output
PowerMax PM4-100A Deck-Mount Converter Charger, Lithium Compatible
big lithium banks charged mainly by generator
Our take Check price for PowerMax PM4-100A Deck-Mount Converter Charger, Lithium Compatible (opens in a new tab)
Best Mid-Size Upgrade
RecPro 65A RV Power Converter and Battery Charger
owners wanting a modest charge speed boost
Our take Check price for RecPro 65A RV Power Converter and Battery Charger (opens in a new tab)
Best 100A Value
MWXNE 100A RV Power Converter with Mode Switch
budget buyers with a big lithium bank
Our take Check price for MWXNE 100A RV Power Converter with Mode Switch (opens in a new tab)
Best Budget 100A
VEVOR 100A RV Power Converter Battery Charger
buyers comparing capacity, compatibility, included components and storage needs
Our take Check price for VEVOR 100A RV Power Converter Battery Charger (opens in a new tab)
Best Manual Mode Lock
Rugaest WF-9855 55 Amp Converter with Manual Lithium Mode
solar-equipped rigs replacing a WF-9855
Our take Check price for Rugaest WF-9855 55 Amp Converter with Manual Lithium Mode (opens in a new tab)
Why Each Pick Made the Cut
Best Overall1 of 6
Progressive Dynamics PD9360V 9300 Series 60 Amp Converter on Amazon (opens in a new tab)
Progressive Dynamics PD9360V 9300 Series 60 Amp Converter makes the shortlist because dedicated lithium 2-stage mode with clear voltages.
Best for
- most trailer owners with 100 to 300Ah lithium
Why it made the shortlist
This model is aimed at most trailer owners with 100 to 300Ah lithium. The documented setup centers on 60A, 1000W input, lithium mode: 14.4V bulk, 4 LED-coded charge modes.
The most useful documented advantage is dedicated lithium 2-stage mode with clear voltages. Its Lithium mode: 14.4V bulk specification sits at between the lower and upper ends of the comparable range in this 3-product comparison. Treat the battery platform and included charger as part of the fit, not just the headline number.
The main limitation to plan around is priciest charger in this comparison. Confirm whether the battery and charger are included with the exact package. Check platform compatibility and published runtime against the area or workload you need to cover.
Key dimensions & specs
- 60A, 1000W input
- Lithium mode: 14.4V bulk
- 4 LED-coded charge modes
Pros
- Dedicated lithium 2-stage mode with clear voltages
- LED color shows which profile is active
- Auto storage mode after 33 hours of light use
- Separate AGM and flooded lead-acid modes
Cons
- Priciest charger in this comparison
- 60A is slower than the 100A picks for large banks
Best High-Output2 of 6
PowerMax PM4-100A Deck-Mount Converter Charger, Lithium Compatible on Amazon (opens in a new tab)
The strongest case for PowerMax PM4-100A Deck-Mount Converter Charger, Lithium Compatible is 100A output refills large banks quickly.
Best for
- big lithium banks charged mainly by generator
Why it made the shortlist
For big lithium banks charged mainly by generator, this is one of the more relevant configurations in the shortlist. The documented setup centers on 100A regulated output, adjustable lithium output, standalone deck mount.
Its case starts with 100A output refills large banks quickly. Against the other 5 picks, the useful comparison starts with 100A regulated output and adjustable lithium output. Those details show whether its configuration suits the job better than a neighboring recommendation.
The trade-off worth checking first is needs heavy cables and a correctly sized fuse. Confirm the exact model number and included components before ordering. Check dimensions, compatibility and maintenance needs against the way you plan to use and store it.
Key dimensions & specs
- 100A regulated output
- Adjustable lithium output
- Standalone deck mount
Pros
- 100A output refills large banks quickly
- Adjustable output for lithium voltages
- Thermal and reverse-polarity protection built in
Cons
- Needs heavy cables and a correctly sized fuse
- Charge stages less documented than the PD9360V
- Overkill for a single 100Ah battery
Best Mid-Size Upgrade3 of 6
RecPro 65A RV Power Converter and Battery Charger on Amazon (opens in a new tab)
RecPro 65A RV Power Converter and Battery Charger is the better fit when owners wanting a modest charge speed boost.
Best for
- owners wanting a modest charge speed boost
Why it made the shortlist
The intended use case is owners wanting a modest charge speed boost. The documented setup centers on 65A, 4-stage charging, lead and lithium compatible, same line runs 35A to 100A.
What separates it on paper is 65A is a step up from stock 55A. Against the other 5 picks, the useful comparison starts with 65A, 4-stage charging and lead and lithium compatible. Those details show whether its configuration suits the job better than a neighboring recommendation.
Before committing, account for lithium mode selection not documented. Confirm the exact model number and included components before ordering. Check dimensions, compatibility and maintenance needs against the way you plan to use and store it.
Key dimensions & specs
- 65A, 4-stage charging
- Lead and lithium compatible
- Same line runs 35A to 100A
Pros
- 65A is a step up from stock 55A
- 4-stage routine includes a maintenance stage
- RV parts brand with several sizes
Cons
- Lithium mode selection not documented
- Sparse listing compared with Progressive Dynamics
Best 100A Value4 of 6
MWXNE 100A RV Power Converter with Mode Switch on Amazon (opens in a new tab)
Choose MWXNE 100A RV Power Converter with Mode Switch for push switch selects the lithium profile.
Best for
- budget buyers with a big lithium bank
Why it made the shortlist
MWXNE 100A RV Power Converter with Mode Switch is positioned for budget buyers with a big lithium bank. The documented setup centers on 100A output, liFePO4 and lead-acid modes, fixed 13.0V, 14.6V, 16.5V.
The feature doing most of the work here is push switch selects the lithium profile. Its Fixed 13.0V, 14.6V, 16.5V specification sits at the lower end of the comparable range in this 3-product comparison. Treat the battery platform and included charger as part of the fit, not just the headline number.
The practical constraint here is lesser-known brand, no UL listing documented. Confirm whether the battery and charger are included with the exact package. Check platform compatibility and published runtime against the area or workload you need to cover.
Key dimensions & specs
- 100A output
- LiFePO4 and lead-acid modes
- Fixed 13.0V, 14.6V, 16.5V
Pros
- Push switch selects the lithium profile
- Automatic Boost, Normal, and Trickle stages
- Extra fuses included in the box
Cons
- Lesser-known brand, no UL listing documented
- 16.5V setting is unsafe for 12V lithium
Best Budget 100A5 of 6
VEVOR 100A RV Power Converter Battery Charger on Amazon (opens in a new tab)
VEVOR 100A RV Power Converter Battery Charger makes the shortlist because dedicated LiFePO4 charging mode.
Best for
- buyers comparing capacity, compatibility, included components and storage needs
Why it made the shortlist
This model is aimed at buyers comparing capacity, compatibility, included components and storage needs. The documented setup centers on 100A output, liFePO4 and lead-acid modes, six listed protections.
The most useful documented advantage is dedicated LiFePO4 charging mode. Against the other 5 picks, the useful comparison starts with 100A output and liFePO4 and lead-acid modes. Those details show whether its configuration suits the job better than a neighboring recommendation.
The main limitation to plan around is not a WF-9800 bay drop-in. Confirm the exact model number and included components before ordering. Check dimensions, compatibility and maintenance needs against the way you plan to use and store it.
Key dimensions & specs
- 100A output
- LiFePO4 and lead-acid modes
- Six listed protections
Pros
- Dedicated LiFePO4 charging mode
- Copper cable included
- Fan runs only when hot
Cons
- Not a WF-9800 bay drop-in
- Charge stage details are vague
Best Manual Mode Lock6 of 6
Rugaest WF-9855 55 Amp Converter with Manual Lithium Mode on Amazon (opens in a new tab)
The strongest case for Rugaest WF-9855 55 Amp Converter with Manual Lithium Mode is mode stays locked, no auto-detect confusion.
Best for
- solar-equipped rigs replacing a WF-9855
Why it made the shortlist
For solar-equipped rigs replacing a WF-9855, this is one of the more relevant configurations in the shortlist. The documented setup centers on 55A, 950W, push-button lithium lock, 14.6V, fits WF-9855 bays.
Its case starts with mode stays locked, no auto-detect confusion. Its Push-button lithium lock, 14.6V specification sits at the upper end of the comparable range in this 3-product comparison. Treat the battery platform and included charger as part of the fit, not just the headline number.
The trade-off worth checking first is 55A is the slowest charger here. Confirm whether the battery and charger are included with the exact package. Check platform compatibility and published runtime against the area or workload you need to cover.
Key dimensions & specs
- 55A, 950W
- Push-button lithium lock, 14.6V
- Fits WF-9855 bays
Pros
- Mode stays locked, no auto-detect confusion
- Dedicated 14.6V lithium charging
- Fits WF-9855 series deck-mount bays
- Variable-speed fan stays quiet at low load
Cons
- 55A is the slowest charger here
- Only a 2-year warranty
How We Built This Shortlist
Each pick was assessed across 5 criteria weighted for real-world use.
- Lithium profile documentation
- We favored units that publish their lithium bulk and float or idle voltages, since a lithium label without numbers tells you little.
- Mode switching method
- Each charger was classed by how it enters lithium mode: LED-indicated selection, a push button lock, a switch, or an adjustable output.
- Charge current versus bank size
- We matched each unit's 55 to 100 amp rating to typical RV bank sizes and to common BMS charge limits.
- Install path
- We noted whether a unit drops into an existing WF-9800 bay or needs a standalone mount with new cables and fusing.
- Value per amp
- Price per amp of charge current was compared alongside brand track record and documented protections.
What Matters Before You Choose an RV Converter Charger for Lithium Batteries
Key buying criteria so you get the right fit the first time.
Lithium bulk voltage
Bulk voltage is the level the charger pushes to fill the battery. For 12V LiFePO4 it typically sits between about 14.2 and 14.6V; much lower and the battery never reaches full, much higher risks tripping the BMS. Look for an exact lithium voltage in the listing, such as 14.4V or 14.6V, rather than a generic lithium compatible phrase.
How the charger leaves bulk
Lithium does not need the long float stage lead-acid wants, and holding it at a high voltage for weeks adds stress. Better chargers drop to an idle or storage voltage near 13.4 to 13.6V once current tapers. Check whether the listing describes what happens after the battery is full, as the PD9360V does with its idle and storage modes.
Charge current versus BMS limit
A 100 amp charger refills a big bank fast, but many 100Ah batteries are rated for only 50 amps of charge current, and the BMS may cut off or stress cells if exceeded. Add up the rated charge current of every battery in parallel and keep the charger at or below it. Find the figure under max charge current on the battery spec sheet, not the discharge rating.
Mode selection reliability
Auto-detect chargers guess battery type from voltage behavior, which solar input or a heavy load can throw off. A push button or switch removes that guesswork but has to be set correctly once. Look for an indicator light or label that shows which mode is active so you can confirm it at a glance.
Fixed voltage modes and their risk
Several budget chargers offer fixed outputs up to 16.5V for special cases. That figure is well above what a 12V lithium or lead-acid battery should see, so selecting it by mistake can trigger BMS protection or damage cells. Treat any fixed mode above about 14.6V as off limits unless the battery maker tells you to use it.
Wiring and fusing for higher amps
Moving from 55 to 100 amps raises the cable gauge and fuse size you need between converter and battery. Undersized cable runs warm and drops voltage, which slows charging and can be a fire risk. Check the converter manual for required cable size and fuse rating before you buy, and budget for new cable if it exceeds what you have.
Match an RV Converter Charger for Lithium Batteries to Your RV
By Lithium Bank Size
| Bank size | Recommended pick | Why |
|---|---|---|
| One 100Ah battery | Rugaest WF-9855 | 55A is near most 100Ah charge limits |
| 200 to 300Ah | Progressive Dynamics PD9360V | 60A with a documented lithium mode |
| 300 to 400Ah, mostly shore power | RecPro 65A | 65A without rewiring for 100A |
| 400Ah or more, generator charging | PowerMax PM4-100A | 100A shortens generator runtime |
| 400Ah or more on a tight budget | MWXNE 100A | 100A with a lithium mode switch |
Scroll sideways to see every column.
By Budget
| Budget | Recommended pick |
|---|---|
| Under $70 | Rugaest WF-9855 |
| About $100 to $135 | VEVOR 100A or MWXNE 100A |
| About $150 to $190 | RecPro 65A or PowerMax PM4-100A |
| About $270 | Progressive Dynamics PD9360V |
Selectable Profile vs Adjustable Output
- Selectable profile
- You pick a named lithium mode and the charger runs its own bulk and idle voltages, which is hard to get wrong. The Progressive Dynamics PD9360V, MWXNE 100A, VEVOR 100A, and Rugaest WF-9855 work this way.
- Adjustable output
- You set the voltage to match the battery maker's spec, which offers precision but relies on you configuring it correctly. The PowerMax PM4-100A falls here.
Most owners should default to a selectable lithium profile; choose adjustable only if your battery maker specifies an unusual charge voltage.
By Charging Source
| Main power source | Recommended pick |
|---|---|
| Full hookups most nights | Progressive Dynamics PD9360V |
| Generator with limited quiet hours | PowerMax PM4-100A |
| Roof solar plus occasional shore | Rugaest WF-9855 |
| Home driveway between trips | RecPro 65A |
For Generator Charging Specifically
- Look for
- High charge current that your battery BMS can accept, plus a converter draw your generator can carry alongside air conditioning or a microwave.
- In this comparison
- The PowerMax PM4-100A delivers 100 amps from a known RV brand, and the MWXNE 100A matches that current for less money if brand history matters less.
When to Spend More
- Spend more if
- You want certainty about what voltage hits your cells; the Progressive Dynamics PD9360V publishes its lithium bulk and idle voltages plus a storage mode.
- Save if
- You have one battery and a WF-9855 bay; the Rugaest WF-9855 gives a locked 14.6V lithium mode for about $60.
Before You Bring One Home
Can I use my stock lead-acid converter with lithium batteries?
It will usually work without causing danger, but a fixed 13.6V output rarely fills a LiFePO4 battery, so you lose usable capacity. A charger with a dedicated lithium mode such as the PD9360V or the Rugaest WF-9855 fixes that.
What mistake do people make with 100 amp chargers?
Installing one without checking the battery's maximum charge current or upgrading the cable and fuse. A single 100Ah battery limited to 50 amps of charge does not benefit from 100 amps and may trip its BMS.
Is the PD9360V worth it over a 100A budget unit?
If you want documented voltages and proven RV brand support, yes. If your priority is charge speed per dollar for a large bank, the MWXNE or VEVOR 100A units deliver far more current for less money.
How do I set up the lithium mode correctly?
Read the battery's recommended charge voltage first. Then select the lithium mode on units like the MWXNE or Rugaest, or set the PowerMax output to that voltage, and confirm with a meter that battery voltage rises toward that figure while charging.
Can I charge lithium below freezing with these converters?
None of these converters has a temperature sensor that stops charging in the cold. Charging LiFePO4 below about 32F can damage cells, so rely on a battery with low temperature cutoff or a built-in heater.
Should I leave the charger on during storage?
Units with a storage or idle stage, like the PD9360V, can stay connected. With simpler units it is often better to charge lithium to full and then disconnect, since lithium holds charge well for months.
Bottom Line
Best overall: Progressive Dynamics PD9360V 9300 Series 60 Amp Converter — best overall pick in this roundup. See the full verdicts above for every pick, with pros, cons and who each one suits.
Browse all rv converter chargers for lithium batteries on Amazon — Prime-eligible options with current pricing.