After a full evening of lights, fans, and slide cycles, it's frustrating when the battery is still low in the morning. Choose your charge mode, watch the LCD, and help your battery catch up overnight so your 12V power is ready for the basics.
Most stock converters decide when to charge harder and when to back off, so you don't always know what your battery is actually getting. This adjustable converter puts you in control with three selectable modes: fixed voltage, 2-stage, and full 3-stage smart charging. Pick the approach that fits the way you're using your rig, whether you want hands-off charging and maintenance or you want the converter to stay right where you set it.
With 55 amps available, you can roll in after a drive, run your lights, water pump, slides, and still have the battery catching back up while you sleep instead of limping into the next day. It also supports flooded, AGM, gel, and lithium batteries by letting you manually adjust voltage. So instead of one generic charging pattern on every setup, you can dial in the output your battery calls for, and your setup behaves the way you expect in an RV, a boat, or anywhere you need dependable 12V power.
When your converter keeps jumping between charging modes, your 12V system can feel unpredictable: lights subtly change, fans ramp up and down, and you're left wondering if something is wrong or if it's just the charger doing its thing. Fixed voltage mode solves that by letting you choose one steady output voltage and hold it there, so your gear gets consistent power instead of riding along with boost, normal, and float changes. You get fewer "why did that just change?" moments, you can match a specific voltage your battery prefers, and your voltage stays steadier when multiple loads are going.
The built-in LCD screen shows real-time output voltage, making it easy to confirm that charging is happening at the level you expect. No matter if you're plugged into shore power, running a generator, or testing on the bench, you can watch the voltage climb, settle, and hold where you set it.
The compact, deck-mounted design works for mid-size systems and heavier daily draws. The temperature-controlled fan helps manage heat without adding unnecessary noise. Built-in current limiting, overload, and short-circuit protection support reliable operation whether you're charging overnight or pushing current during short generator runs.
Customer Satisfaction Score:
96% were satisfied with this product
4% of customers were not satisfied
Ratings & Reviews
Do you have a question about this Power Converter?
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.









Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.