RAM Promaster
Embrace #vanlife – or get more work done. Whether your Dodge RAM Promaster takes you to work or play, ample on-vehicle power makes it possible.
American Power Systems, Inc. provides the unmatched ability to quickly and properly charge any commercially available battery type for Promaster, including lithium-ion. We also lead the industry with power-at-idle solutions for Promaster and other vocational vehicles.
Our solutions include single high output alternator upgrades (up to 360 amps); dual alternators brackets and kits; and smart, CAN-equipped alternator regulators to ensure optimal power system performance and longevity. We also supply high-idle switches and additional components to get your van ready for work or adventure—no matter where you’re headed. So whether you need a Dodge Ram Promaster replacement alternator, a secondary alternator or both -- plus a dual alternator bracket and high idle controls -- we've got you covered.
Selected DC power upgrades for Dodge RAM Promaster are featured below. Please contact us about your specific application to learn more or to make a purchase.
Output: Volts | Output: Amps | Solutions by Series | Alternator Position | Mount(s) |
48-56 volts nominal | 160 amps | 160 HPI Series High Output Alternators | Secondary position with APS bracket (typical) | Application specific |
28 volts nominal | 185 amps | 185 HPI Series High Output Alternators | Secondary position with APS bracket (typical) | Tangent |
12 volts nominal | 255 amps | 255 HPI Series High Output Alternators | Direct OE replacement; secondary position with APS bracket (typical) | Application specific |
12 volts nominal | 300 amps | 300 HPI Series High Output Alternators | Direct OE replacement; secondary position with APS bracket (typical) | Application specific |
12 volts nominal | 360 amps | 360 HPI Series High Output Alternators | Direct OE replacement; secondary position with APS bracket (typical) | Application specific |
- May be installed with minimal disruption to OEM components
- Use existing mounting points
- May be installed on a separate drive system to avoid interference with the original, OEM drive. (For example, we can create a split system operating at two different voltages.)
- Include complete installation instructions
- More power at idle: Our high idle switches allow end-users to access more power at vehicle idle with the flip of a dash-mounted switch. These are often sold as part of a dual alternator kit.
- Better batteries: APS recommends high-quality AGM, or lithium-ion battery solutions, when developing configurations.
- Additional power components and accessories: APS also provides components including DC to DC boost converters, DC to DC step-down converters and battery isolators, to ensure dependable power to all vehicle equipment and systems.

Please contact us to make a purchase or inquire about solutions for your application.