Powermax PM3-55LK 55 Amp 12 Volt Power Supply (Replacement for WFCO WF-9855) Battery Charger with 3 Stage Smart Charging Mode, Built-in Cooling Fan and LED Indicator Light, Lithium Compatible

A lot of reviews mention how loud it is. Well, it is certainly louder than the original one. However, to replace the original one it would be at least double the price. We call that a push. Ease of install will vary depending on your rig. For mine I needed to get another piece of ground wire as the lug is in a different location the the original one. That said, if you think you will ever need to adjust the voltage be mindful on where those switches are when you install it. Otherwise, it works well.

My new batteties would do a nose dive with the old converter! This was properly set for voltage and charge rate and it does the job. very easy install. Excellent get one>

I use this unit as a solar charger for a backup system. It installs easily and it has a very high build quality. Since it is being used for a back up it will probably not get a lot of use, However I expected it to behave flawlessly when I need it to.

Good item

Great

Just got yesterday a week ahead of when they said and I hook up today works looks great

Yes it will charge lithium’s but you must leave it switched to “fixed output” and adjust it to 14.4 volts. Once the battery achieves this voltage you must manually turn it off, as there is no “float” charge in “fixed” setting. Think of it as a 50 amp power supply with a stable voltage output in “fixed” mode. If the switch is placed in 3 stage it will not charge lithium’s correctly (even if you set the V in the in fixed mode). It seems to time out and go to a pre set lead acid absorption mode (too low for lithiums) regardless of what the “bulk” voltage is set at. I can only assume that it will charge lead acid fine in 3 stage plus you can set bulk voltage. Fan goes on and off as needed and not too loud.

Im pleased with this product good power and decent price. Dont know the lifespan but hopefully years to come.

Let me start off by saying as an avid bowfisherman, we are very hard on our equipment.. I have had 7 or 8 over the years, upgrading and replacing. I have one hooked up to my work bench to Power my 12v audio system and a power port for working on electronics, and 2 in my pontoon for my 24v troller. Ive never really had any issues with the powermaxes themselves, especially for what Ive put them through on my boats lol.

Good converter