Buying Guide
6 Best Progressive Dynamics RV Converters for Lithium Batteries in 2026: A Practical RV Guide
Six genuine Progressive Dynamics converters compared for lithium: which have a lithium charge mode, which do not, amps, input watts and price, $213 to $295.
By Hardcastle's RV Editors
10 min read6 products evaluated
Progressive Dynamics makes more RV converters than any other brand, and the part number tells you almost everything about lithium readiness. The newer 9300 series has a selectable charge mode for lithium, AGM and flooded batteries, while the older 4000 and 4600 series were designed around lead-acid charging and their listings never mention lithium at all. Picking the wrong series means a lithium battery that charges slowly, or stops short of full.
We compared six converters sold under the Progressive Dynamics or Inteli-Power name, from the 30A PD9330V at $213 to the 80A PD9380V at $295, and we left out the many look-alike replacements that only mention the brand in their titles. The comparison focuses on what the listings actually state: the lithium charge voltage, whether the charger idles at a lower float, input watts and cost per amp.
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
- Inteli-Power PD9360V 9300 Series Converter, 60 Amp leads this shortlist for most trailers with one or two lithium batteries. 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, 1,000W input, 80A, 1,300W input, 30A, 500W input. Confirm the exact model and included components before ordering.
- Trade-off to plan for
- Must be switched out of lithium mode for flooded batteries
The Practical Shortlist
A road-tested-thinking look at 6 options, organized around the job each one suits best.
Best Overall for Lithium
Inteli-Power PD9360V 9300 Series Converter, 60 Amp
most trailers with one or two lithium batteries
Our take Check price for Inteli-Power PD9360V 9300 Series Converter, 60 Amp (opens in a new tab)
Best for Large Lithium Banks
Progressive Dynamics Inteli-Power PD9380V 9300 Series Converter, 80 Amp
large lithium banks and rigs with inverters
Our take Check price for Progressive Dynamics Inteli-Power PD9380V 9300 Series Converter, 80 Amp (opens in a new tab)
Best Budget With Lithium Mode
Inteli-Power PD9330V 9300 Series Converter, 30 Amp
small trailers with a single lithium battery
Our take Check price for Inteli-Power PD9330V 9300 Series Converter, 30 Amp (opens in a new tab)
Best Replacement for Older Rigs
Progressive Dynamics PD4060KV Inteli-Power 4000 Series Converter with Charge Wizard, 60 Amp
older rigs with lead-acid batteries and a 4000-series slot
Our take Check price for Progressive Dynamics PD4060KV Inteli-Power 4000 Series Converter with Charge Wizard, 60 Amp (opens in a new tab)
Best Mid-Size Lead-Acid
Progressive Dynamics PD4045KV Inteli-Power 4000 Series Converter with Charge Wizard, 45 Amp
lead-acid rigs that need 45A in a 4000-series slot
Our take Check price for Progressive Dynamics PD4045KV Inteli-Power 4000 Series Converter with Charge Wizard, 45 Amp (opens in a new tab)
Best for Replacing Parallax or WFCO
Progressive Dynamics PD4645V Inteli-Power 4600 Series Converter/Charger with Charge Wizard, 45 Amp
replacing a failed Parallax, Magnatek or WFCO section
Our take Check price for Progressive Dynamics PD4645V Inteli-Power 4600 Series Converter/Charger with Charge Wizard, 45 Amp (opens in a new tab)
Why Each Pick Made the Cut
Best Overall for Lithium1 of 6
Inteli-Power PD9360V 9300 Series Converter, 60 Amp on Amazon (opens in a new tab)
Inteli-Power PD9360V 9300 Series Converter, 60 Amp is the better fit when most trailers with one or two lithium batteries.
Best for
- most trailers with one or two lithium batteries
Why it made the shortlist
The intended use case is most trailers with one or two lithium batteries. The documented setup centers on 60A, 1,000W input, blue lithium mode, 14.4V, 13.6 to 14.7 VDC.
What separates it on paper is selectable lithium, AGM and flooded modes in one converter. Against the other 5 picks, the useful comparison starts with 60A, 1,000W input and blue lithium mode, 14.4V. Those details show whether its configuration suits the job better than a neighboring recommendation.
Before committing, account for must be switched out of lithium mode for flooded batteries. 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, 1,000W input
- Blue lithium mode, 14.4V
- 13.6 to 14.7 VDC
Pros
- Selectable lithium, AGM and flooded modes in one converter
- Costs $26.44 less than the 60A PD4060KV
- Blue mode charges at 14.4V then idles at 13.6V
- 60A suits most travel trailers with up to two batteries
Cons
- Must be switched out of lithium mode for flooded batteries
Best for Large Lithium Banks2 of 6
Progressive Dynamics Inteli-Power PD9380V 9300 Series Converter, 80 Amp on Amazon (opens in a new tab)
Choose Progressive Dynamics Inteli-Power PD9380V 9300 Series Converter, 80 Amp for 80A refills a 300Ah lithium bank in about three hours.
Best for
- large lithium banks and rigs with inverters
Why it made the shortlist
Progressive Dynamics Inteli-Power PD9380V 9300 Series Converter, 80 Amp is positioned for large lithium banks and rigs with inverters. The documented setup centers on 80A, 1,300W input, four-color charge modes, 13.6 to 14.7 VDC.
The feature doing most of the work here is 80A refills a 300Ah lithium bank in about three hours. Against the other 5 picks, the useful comparison starts with 80A, 1,300W input and four-color charge modes. Those details show whether its configuration suits the job better than a neighboring recommendation.
The practical constraint here is 1,300W input draws about 11 amps from shore power. 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
- 80A, 1,300W input
- Four-color charge modes
- 13.6 to 14.7 VDC
Pros
- 80A refills a 300Ah lithium bank in about three hours
- Lithium mode charges at 14.4V then idles at 13.6V
- Constant-voltage magenta mode gives full load for powering gear
Cons
- 1,300W input draws about 11 amps from shore power
- More converter than a one-battery trailer needs
Best Budget With Lithium Mode3 of 6
Inteli-Power PD9330V 9300 Series Converter, 30 Amp on Amazon (opens in a new tab)
Inteli-Power PD9330V 9300 Series Converter, 30 Amp makes the shortlist because cheapest converter here with a lithium mode at $213.
Best for
- small trailers with a single lithium battery
Why it made the shortlist
This model is aimed at small trailers with a single lithium battery. The documented setup centers on 30A, 500W input, blue lithium mode, 13.6 to 14.7 VDC.
The most useful documented advantage is cheapest converter here with a lithium mode at $213. Against the other 5 picks, the useful comparison starts with 30A, 500W input and blue lithium mode. Those details show whether its configuration suits the job better than a neighboring recommendation.
The main limitation to plan around is about $7.10 per amp, highest in the 9300 series. 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
- 30A, 500W input
- Blue lithium mode
- 13.6 to 14.7 VDC
Pros
- Cheapest converter here with a lithium mode at $213
- Same four charge modes as the larger 9300 units
- 500W input is gentle on a 15 amp shore circuit
- Compact 30A fits small trailers and pop-ups
Cons
- About $7.10 per amp, highest in the 9300 series
- 30A is slow for batteries above 100Ah
Best Replacement for Older Rigs4 of 6
Progressive Dynamics PD4060KV Inteli-Power 4000 Series Converter with Charge Wizard, 60 Amp on Amazon (opens in a new tab)
The strongest case for Progressive Dynamics PD4060KV Inteli-Power 4000 Series Converter with Charge Wizard, 60 Amp is reverse battery protection with replaceable fuses.
Best for
- older rigs with lead-acid batteries and a 4000-series slot
Why it made the shortlist
For older rigs with lead-acid batteries and a 4000-series slot, this is one of the more relevant configurations in the shortlist. The documented setup centers on 60A, 4000 series, charge Wizard, no lithium mode listed.
Its case starts with reverse battery protection with replaceable fuses. Against the other 5 picks, the useful comparison starts with 60A, 4000 series and charge Wizard. Those details show whether its configuration suits the job better than a neighboring recommendation.
The trade-off worth checking first is listing never mentions lithium or a charge voltage. 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
- 60A, 4000 series
- Charge Wizard
- No lithium mode listed
Pros
- Reverse battery protection with replaceable fuses
- Variable-speed fan and thermal protection are included
- Compact, lightweight body suits older converter slots
- Electronic current limiting protects against overloads
Cons
- Listing never mentions lithium or a charge voltage
- Costs $26.44 more than the 60A PD9360V
Best Mid-Size Lead-Acid5 of 6
Progressive Dynamics PD4045KV Inteli-Power 4000 Series Converter with Charge Wizard, 45 Amp on Amazon (opens in a new tab)
Progressive Dynamics PD4045KV Inteli-Power 4000 Series Converter with Charge Wizard, 45 Amp is the better fit when lead-acid rigs that need 45A in a 4000-series slot.
Best for
- lead-acid rigs that need 45A in a 4000-series slot
Why it made the shortlist
The intended use case is lead-acid rigs that need 45A in a 4000-series slot. The documented setup centers on 45A, 4000 series, reverse battery protection, no lithium mode listed.
What separates it on paper is costs $235.54, the cheapest non-9300 model here. Against the other 5 picks, the useful comparison starts with 45A, 4000 series and reverse battery protection. Those details show whether its configuration suits the job better than a neighboring recommendation.
Before committing, account for no lithium mode or voltage is stated in the listing. 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
- 45A, 4000 series
- Reverse battery protection
- No lithium mode listed
Pros
- Costs $235.54, the cheapest non-9300 model here
- Electronic current limiting and thermal protection are built in
- Variable-speed fan keeps noise down during long charges
- Fuses are easy to replace if reversed
Cons
- No lithium mode or voltage is stated in the listing
- Costs $22.54 more than the lithium-ready PD9330V
Best for Replacing Parallax or WFCO6 of 6
Progressive Dynamics PD4645V Inteli-Power 4600 Series Converter/Charger with Charge Wizard, 45 Amp on Amazon (opens in a new tab)
Choose Progressive Dynamics PD4645V Inteli-Power 4600 Series Converter/Charger with Charge Wizard, 45 Amp for lists Parallax, Magnatek and WFCO sections it replaces.
Best for
- replacing a failed Parallax, Magnatek or WFCO section
Why it made the shortlist
Progressive Dynamics PD4645V Inteli-Power 4600 Series Converter/Charger with Charge Wizard, 45 Amp is positioned for replacing a failed Parallax, Magnatek or WFCO section. The documented setup centers on 45A, 4600 series, four-stage Charge Wizard, replaces Parallax and WFCO.
The feature doing most of the work here is lists Parallax, Magnatek and WFCO sections it replaces. Against the other 5 picks, the useful comparison starts with 45A, 4600 series and four-stage Charge Wizard. Those details show whether its configuration suits the job better than a neighboring recommendation.
The practical constraint here is listing never mentions lithium batteries or a charge voltage. 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
- 45A, 4600 series
- Four-stage Charge Wizard
- Replaces Parallax and WFCO
Pros
- Lists Parallax, Magnatek and WFCO sections it replaces
- Four-stage charging is aimed at longer battery life
- Easy installation is stated in the listing
- Charger will not boil the battery
Cons
- Listing never mentions lithium batteries or a charge voltage
- Costs $24.67 more than the 60A PD9360V
How We Built This Shortlist
Each pick was assessed across 5 criteria weighted for real-world use.
- Genuine Progressive Dynamics only
- We kept only converters sold under the Progressive Dynamics or Inteli-Power name and left out replacement boards that only mention the brand in their titles.
- Stated lithium charge behavior
- We checked each listing for a lithium mode, the charge voltage and the idle voltage, and marked those that never mention lithium.
- Amps and input watts
- We compared output amps, input watts and cost per amp, and estimated charge time for a battery from the stated 14.4 volt output.
- Series and fit
- We noted whether each model is in the 9300, 4000 or 4600 series, since that decides what older converter sections it replaces.
- Mode switching and cautions
- We read the manufacturer cautions in each listing, such as not charging flooded batteries in lithium or AGM mode.
What Matters Before You Choose a Progressive Dynamics RV Converter for Lithium Batteries
Key buying criteria so you get the right fit the first time.
Lithium charge mode and voltage
Lithium iron phosphate batteries want about 14.4 to 14.6 volts to charge fully, and a lead-acid converter profile that floats at 13.6 volts can leave them partly charged. A selectable lithium mode makes the converter hold the right voltage, as the 9300 series blue mode does at a nominal 14.4 VDC. Look for the exact lithium voltage in the listing, and avoid assuming that a part from the 4000 or 4600 series supports it.
Idle voltage after the charge
Once current falls, a good lithium profile drops to a lower voltage, 13.6 VDC in the 9300 series blue mode, so the battery is not held at a high voltage for weeks. Holding a lithium battery at a high float stresses it, and a lead-acid float is designed for different chemistry. Check whether the listing describes an idle or float stage and its voltage.
Amps versus battery capacity
Output amps set how fast the bank refills, and part of the output is also feeding your lights, pump and fridge. A 60 amp converter refills 240Ah in roughly four hours with no other loads, while a 30 amp unit needs eight. Match amps to about 20 to 30 percent of your battery capacity if you want to charge in a reasonable time, and subtract the loads you run.
Input watts and shore power
A converter draws input watts from your shore supply, and 1,300 watts at 120 volts is about 11 amps, a lot on a 15 amp circuit with other things running. Generator-fed rigs need to watch this too. Read the input wattage in the listing, and confirm that your pedestal or generator can supply it along with the air conditioner and other loads.
Series and physical fit
The 4000, 4600 and 9300 series differ in how they mount and which older sections they replace, so the listing for the PD4645V names Parallax, Magnatek and WFCO parts it replaces. A converter that does not fit your panel needs a new panel or wiring. Read the compatibility list, and check the model number against the one on your existing unit.
Mode cautions and manual switching
A multi-mode converter is only as safe as the mode you leave it in. The 9300 listing warns not to recharge flooded batteries in the lithium or AGM mode, and says not to store the vehicle for long in the magenta constant-voltage mode. Read the caution lines in the listing, and note the LED color that matches each mode so you can check it quickly.
Match a Progressive Dynamics RV Converter for Lithium Batteries to Your RV
By Lithium Bank Size
| Your situation | Recommended pick | Why |
|---|---|---|
| One 100Ah lithium battery, small trailer | PD9330V | 30A with a lithium mode at $213 |
| One or two lithium batteries up to about 200Ah | PD9360V | 60A, lithium mode, $269 |
| 300Ah or larger bank, or an inverter | PD9380V | 80A, about three hours to refill 300Ah |
| Lead-acid only, 60A in a 4000-series slot | PD4060KV | No lithium mode listed |
| Lead-acid only, 45A mid-size | PD4045KV | $235.54 with thermal protection |
| Replacing a failed Parallax or WFCO section | PD4645V | Lists the sections it replaces |
Scroll sideways to see every column.
By Budget
| Budget | Recommended pick |
|---|---|
| Around $213 | PD9330V |
| About $236 | PD4045KV (lead-acid) |
| $269 | PD9360V |
| $294 to $295 | PD4645V, PD9380V or PD4060KV |
9300 Series Modes vs 4000 and 4600 Series
- 9300 series (lithium mode)
- Four selectable modes, with a blue lithium mode at a nominal 14.4 VDC and a drop to 13.6 VDC when current falls. The PD9330V, PD9360V and PD9380V are in this group, so they can serve either chemistry.
- 4000 and 4600 series
- Built around lead-acid charging with a Charge Wizard, and their listings never mention lithium or a charge voltage. The PD4060KV, PD4045KV and PD4645V are in this group and make sense mainly as replacements in older rigs.
For any lithium upgrade, default to a 9300-series model unless an older converter slot forces a 4000 or 4600 part.
By Shore Power Limits
| Your power source | Recommended pick | Why |
|---|---|---|
| 15 amp household outlet or small generator | PD9330V | 500W input, about 4 amps from the wall |
| 30 amp RV pedestal | PD9360V | 1,000W input fits within a 30 amp supply |
| 30 or 50 amp service with loads on | PD9380V | 1,300W input, plan for about 11 amps |
| Generator-fed with a lead-acid battery | PD4045KV | Variable fan and thermal protection |
Scroll sideways to see every column.
For Upgrading to Lithium Without a New Distribution Panel Specifically
- Look for
- A converter section that fits your existing panel, a lithium charge mode at about 14.4 volts and a way to return to a lead-acid setting. The converter does not sense battery temperature, so rely on the battery's own cold cutoff and not on the converter.
- In this comparison
- The PD9360V and PD9380V list a blue lithium mode and constant-voltage mode, while the PD4060KV and PD4645V list fitment for older panels but no lithium mode. Check the listing for fit before assuming a 9300 unit drops into a 4000-series opening.
When to Spend More
- Spend more if
- You have a 300Ah or larger bank or an inverter; the PD9380V at $295 costs $26 more than the PD9360V for 20 more amps and cuts a 300Ah refill by about an hour.
- Save if
- You have a single 100Ah battery and light loads; the PD9330V at $213 saves $56 against the PD9360V and still states a lithium mode.
Before You Bring One Home
Does my Progressive Dynamics converter work with lithium batteries?
Only the 9300 series models here, the PD9330V, PD9360V and PD9380V, state a lithium mode in their listings. The 4000 and 4600 series listings do not mention lithium, so confirm with Progressive Dynamics before using one with a lithium battery.
What do the converter's LED colors mean?
In the 9300 series, green is flooded lead acid, blue is lithium with a two-stage charge, white is AGM and magenta is constant voltage at 13.6 VDC. The listing states these colors, so read them before changing batteries.
Is the PD9380V worth $26 more than the PD9360V?
Only for large banks. The extra 20 amps cuts the refill time of a 300Ah battery by about an hour, and the cost per amp drops from about $4.48 to $3.69. For one or two small batteries, the 60 amp unit is enough.
How do I switch the converter to lithium mode?
The listing describes the LED colors and modes but not the exact switching procedure, so follow your model's manual. The mode matters, so check that the blue light is lit before leaving the converter connected to lithium.
Can a converter protect my lithium battery from cold?
No. The listings do not mention temperature sensing, so the cold-charging protection comes from the lithium battery's own BMS. If the BMS blocks charging near freezing, the converter will still run the 12V loads.
Can I store the RV with the converter plugged in?
The listing warns against storing the vehicle for long periods in the magenta constant-voltage mode. For storage, use a battery mode that idles at 13.6 VDC, or disconnect the battery if your lithium battery has a storage mode.
Bottom Line
Best overall: Inteli-Power PD9360V 9300 Series Converter, 60 Amp — best overall for lithium pick in this roundup. See the full verdicts above for every pick, with pros, cons and who each one suits.
Browse all progressive dynamics rv converters for lithium batteries on Amazon — Prime-eligible options with current pricing.