Features

• 110V Units Available in 15, 35, 45, 55, 60, 75, 85, 100, 120 Amps
• An exact replacement for the WF-9800 Series
• 220V Units Available in 55, 75, and 100 Amps
• Built-in 3 Stage charging and fixed single output modes
• Suitable for charging ALL battery types, including Lithium, Lead Acid, and AGM
• Fixed output mode voltage can be set between 13.0 Vdc and 16.5 Vdc
• LED Indicator light
• Temperature controlled Quiet fan cooling
• Reverse Polarity, Overload, and Thermal Protection
• 2-Year Manufacturer warranty

The PowerMax PM3 Series converts 110V AC shore or generator power into clean 12V DC power—so you can run 12-volt equipment and charge your RV battery bank at the same time. Built with 3-stage smart charging plus an adjustable power supply mode, PM3 converters are designed to perform reliably across real-world conditions and keep your batteries properly charged and maintained.

These units are a great fit for RVs, automotive, marine, car audio, and other applications that require dependable battery charging and steady 12V power.

Key Features

• AC to DC conversion: 110V AC in → stable DC out
• 3-stage smart charging to help charge efficiently and maintain battery health
• Adjustable power supply mode for applications that need a consistent DC output
• Clean DC power for sensitive 12V electronics
• Available in a wide range of amperage sizes  

Models and Output Options

PM3 Series converters are offered in multiple DC output voltages, including 12V, 24V, and 48V. 220V AC input models are also available for different power systems. Need higher output? PM3 units can be configured in series or parallel (application-dependent) to support higher power demands.

The PM3 12V Series is compatible with LiFePO₄ (lithium) batteries. In fixed mode, it’s optimized for fast charging while supporting long-term battery performance—ideal for RVers and other users who need to recharge a large battery bank quickly between uses (RV, off-grid, communications, and more).

PowerMax offers multiple amperage options to match your setup and charging goals.

Trusted by Many Lithium Battery Brands

PowerMax converters are commonly recommended by lithium battery manufacturers, including brands like Battle Born, RELiON, Lithionics, LifeBlue, and others.

 Tech Specs (PM3-LK Series — All Models)

• DC Output Voltage (No Load, approx.): 14.6V / 13.6V / 13.2V
• Fan Control: Proportional
• Protections: Reverse polarity, overload, and thermal protection
• Dimensions (L×W×H): 7.8" × 9.5" × 3.5"
• Use Case: AC-to-DC converter / battery charger for 12V systems 

Model Comparison (Select Your Amperage) 

 Quick Picking Tip (Optional, but helps conversions)

• 35–45A: Smaller battery banks / lighter 12V loads
• 55–65A: Most common upgrade range for many RVs
• 75A: Faster charging for larger banks
• 100A: Big battery banks or fast turnaround charging