Powermax 110 Volt to 12 Volt DC Power Supply Converter Charger for Rv Pm3-55 (55 Amp)

Very easy to install. The item has worked perfectly as described. The only downside is the fan. It is very noisy. We have our power supply underneath in our storage compartment, but we are able to hear the fan in the kitchen. Wished I would of known that before the purchase. It gets annoying especially when your trying to sleep.

Make sure you hook the blue wire back up if it’s a replacement for RV!

It has a three stage charging system.

Good power supply for ECU programming. Holds constant voltage during ECU module programming. Auto shut off if another power source is detected. Charged fully drained battery under 45 mins. Only con in this power supply is that it doesnt have power supply voltage reading measure display, you have to use volt meter to determine the measurement under fixed voltage supply. If you are programming BMW ECUs I recommend you set the fixed voltage to 14.2 vdc so your output value on terminal 15 and terminal 30 remains between 13.6 to 14 vdc. Voltage supply only fluctuates for the first few mins.

I got this to replace my cheap supposedly 3 stage converter that only charged at 13.6V no matter what. This converter works as expected, 14.6 when batteries are low, 13.6 when filling up and 13.1 float. When the fan runs its not silent but not the loudest thing Ive heard either. Im sure this will help me recharge faster when I am boondocking on generator.

Researched the options, and this fit the bill for the OEM charger in my trailer. Works great since then, been running for nearly a year, keeping the house battery topped. I did have to modify the the housing this fits into on the trailer since its a little deeper than the original. Otherwise, hookup with new wire was easy.

After I had a professional come out & fix my wiring problem, the unit works fine.

Installed in my toy hualer works great. Definitely a upgrade from the old one.

I live in my van, so getting power from outlets to charge my batteries is pretty important. I bought this because at the time I had access to an outlet. It worked as expected. It was a little louder than I wanted, but then again, I am in a VERY small space, and I am in very close proximity in the same space as this, so my experience is going to be a bit skewed as a result. But, given what its job is, and the power levels its dealing with, I cant blame this at all for that. It needs to cool itself. I have since lost the ability to use this as that outlet is no longer accessible to me, but for the time I was able to use this, it worked flawlessly. I plan to use it more in the future.

De que dejo de funcionar y no me responden para mi garantia