Best True 30A Converter · 1 of 6
Progressive Dynamics PD9330V Inteli-Power 9300 Series Converter, 30 Amp

- 30A at 13.6 to 14.7V
- Lithium and AGM modes
- Constant 13.6V mode
Our take
Pick this if you are replacing a failed 9300 series converter or want a lithium-aware 30 amp box without changing the rest of the panel.
Why it made the shortlist
The Progressive Dynamics PD9330V is a 30 amp converter that takes 105 to 130 volts AC at 500 watts and puts out 13.6 to 14.7 volts DC at up to 30 amps. Its listing describes four modes shown by colored lights: a flooded lead-acid mode that boosts to about 14.4 volts, a two-stage lithium mode that idles at 13.6 volts, an AGM mode that absorbs at 14.7 volts, and a constant 13.6 volt mode. It is priced at $213.
What works
- Dedicated lithium mode idles at 13.6 volts after charging
- Four selectable modes cover flooded, AGM, lithium and fixed
- Named original-brand 9300 series part, not a lookalike
- Constant-voltage mode can run loads with no battery attached
Watch out for
- Costs $93 to $103 more than lookalike 30 amp boxes
- Feature text gives no warranty term or dimensions
- The catch
- The caveat is that the listing does not state dimensions or a warranty term in its feature text, and it needs the matching 9300 series bay.






