Progressive Dynamics PD9380V
#4 in StandaloneFull review
The pick for an RV owner who wants a lithium ready deck mount converter with a remote pendant in the box. Its 80 A output suits a big lithium bank.
Amazon $290$290
3.6/5
A low cost standalone converter for owners who are comfortable setting a charge voltage by hand. A common budget replacement for a WFCO 9855 class unit.
- 55 AOutput
- YesLithium mode
- StandaloneBuild
- 2 yearsWarranty
Check price at Amazon$143
Price checked November 3, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Among the lowest prices per amp of any brand-name converter
- Adjustable fixed voltage mode lets you set the exact charge voltage your lithium battery maker asks for
- Proportional fan stays quiet at light load
Cons
- Lithium charging is a manual fixed voltage setting, so a mistake with a lead acid battery can overcharge it
- Two year warranty
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its build. How we rank explains each one.
Specifications
| Model number | PM455LK |
|---|---|
| Charging | |
| Output | 55 A |
| Lithium mode | Yes |
| Multi-stage charging | Yes |
| Build | |
| Build | Standalone |
| Fan runs only as needed | Yes |
| Remote or display | No |
| Weight | 7 lb |
| Warranty | 2 years |
Alternatives in this build
PowerMax PM3-55LK
#5 in StandaloneFull review
A low cost standalone converter for owners who are comfortable setting a charge voltage by hand. A common budget replacement for a WFCO 9855 class unit.
Amazon $137$137
Progressive Dynamics PD9360V
#7 in StandaloneFull review
The pick for an RV owner who wants a lithium ready deck mount converter with a remote pendant in the box. A direct upgrade for an old PD9100 or PD9200.
Amazon $259.99$259.99
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