"Every RVer who has ever experienced less-than-stellar performances from the stock converter/charger should seriously consider adding the TRUECharge2 to the 12-volt DC battery systems", says Gary Bunzer of RV Doctor. Click here to read his product review.


TRUECharge2 battery chargers feature low electrical interference and efficient, power factor corrected multistage charging. TRUECharge2 battery chargers can be mounted in a variety of positions, given their drip-proof design. TRUECharge2 battery chargers enable quick installation with easy-to-access AC and DC wiring compartments.


While factory OEM charge "converters" range from a simple single stage (constant voltage) power supply to reasonably decent 3-stage power supplies, they don't offer the intelligence of the Xantrex battery charger. The 40 Amp TRUECharge2 battery charger outperforms many standard RV converters with higher output ratings. Furthermore, this charger has output settings specifically intended for the AGM batteries installed on this coach.


Protection Features:

  • Reverse battery polarity protection
  • Drip-proof design
  • Over and under-temperature protection
  • DC over-voltage protection
  • Battery overcharging protection

She tried cleaning the machine to no avail, and we decided she would need to take the machine in for service when we got back from the camping trip.  Later on in the day, the machine was back to working properly.  What changed?  Ahh !!! (light bulb comes on), we are now running on generator power (which provides a true sine wave) instead of the factory OEM modified sine wave inverter.  Switching back to the inverter, ... problem returns.  After the camping trip I removed the modified sine wave inverter and replaced it with the Xantrex true sine wave inverter and the little lady is happy again.  Conclusion: The concept of "sensitive electronics" when used with inverters is not just a myth.  For some appliances or machines, ... the inverter does make a difference. 

The compact, easy-to-use and easy-to-install design of the PROwatt SW Series makes it ideal for use in commercial truck, RV and marine applications. With True Sine-Wave output, the PROwatt SW Series can provide power for all types of electrical loads including, variable speed power tools, advanced electrical appliances, microwaves and much more. The PROwatt SW provides household AC power anywhere.


The Prowatt SW remote provides the convenience of a simple on/off remote function to the user. It also has an automatic ignition lockout feature to shut down the inverter’s output when the vehicle’s ignition or a 12 VDC enable is not engaged. A 25’ remote cable is included with the remote panel.

Xantrex TRUECharge2 40A 3-stage battery charger

An easy to mount 15A Inline Transfer Relay provides switching between shorepower and inverter AC source. It comes with a power plug for convenient connection to the inverter GFCI and a hardwire cord for the AC input and output interface. It is available as an accessory to the Prowatt SW product line.


A real-life testimonial from the wife:  While dry camping at a beautiful lake in remote Arizona, Janet was quilting with her beloved Pfaff sewing machine.  At times, the machine would just go off on its own, leaving Janet with little control over the machine's direction.  

DC to AC & AC to DC Power Conversion

Xantrex True Sine Wave Inverter & 3-Stage Battery Charger

Seller post-delivery upgrades significantly enhance the comfort and convenience of this coach.

Xantrex provides mobile power solutions for all types and classes of both motorized and towable recreational vehicles. Xantrex products provide clean, quiet AC power so you don’t have to constantly rely on shore power or a noisy generator to enjoy the comforts of home in your RV.


The PROwatt SW Series feature True Sine-Wave AC output with 1000 continuous watts. With high surge capability, the PROwatt SW Series provides the necessary current to startup demanding electrical loads such as variable speed power tools, advanced electrical appliances, microwaves and much more. In addition to dual GFCI AC receptacles, the PROwatt SW Series include an innovative USB connection for providing power to most USB chargeable devices. The PROwatt SW Series offers many safety features not found in similar inverters.  

2014 Winnebago Adventurer 32H For Sale

Performance Features:

  • 12V models available in 20A, 40A and 60A
  • Microprocessor-controlled, multistage charging algorithms
  • Settings for two and three-stage charging
  • Settings for flooded, gel, AGM or lead-calcium batteries
  • Auto-ranging universal input voltage (90-265 Vac, 47-63 Hz) is also compatible with a generator or other low-quality power sources
  • Temperature-compensated charging when installed with the Battery temperature sensor accessory (included)
  • Power factor corrected for efficient charging
  • Battery-equalization feature
  • Ability to charge ‘dead’ batteries​