WFCOCheng, USA Inc WF8740PBBlack 40 Amps Power Center

I love that WFCO came out with this to support installing and charging LiFeP batteries. They made the unit the same size and with exact mirror installation to the WF8740-P. However the auto detection process requires discharging the Li battery entirely and then re-charging it completely. This discharge/recharge cycle allegedly enables the AD feature to detect that the batteries are indeed Li. It’s a time-consuming process and is anything but automatic. RENOGY, on their DC-DC Chargers has a series of switches to set up the unit for the various battery types. That’s not automatic, but it is way easier. Here is the kicker, my unit did not switch over to Li Charge Mode after two discharge/charge cycles. After talking to tech support, I found out that I have to remove the unit and send it back for a firmware update. There are newer versions of this same unit that have the correct firmware, but that doesn’t help me. I got a dud. The time spent taking out the 8740-P and installing the 8740-AD was a significant project in my camper. Now I have to do it all over again. I would advise buying direct from WFCO, and making sure you get the model with the up-to-date firmware.

easy install , watch videos on youtube

Arrived late! Installed easy.

Placed this in a used 1999 Coleman sea pine pop up camper. Felt like perhaps it was overkill for what was needed but I’m so glad I went with this size. My air conditioner and power in camper works amazingly now. Well worth the money!

Swapped out my 8740-P unit with this one which has auto detect. Swap was 1:1 replacement and pretty straight forward, but after having it installed for over a week the unit stays in absorption mode with my lead acid batteries and never goes into float mode. Over charging lead acid batteries damages the batteries. This unit must not be detecting I have lead acid batteries. My older unit would always go to float 13.2V. This one is not.

Nice replacement unit for an outdated smaller camper(truck camper is what I put it in), but the directions are horrible. YouTube it and installation will go much faster..

Im building my own camper and I installed this unit for my power supply and it works great and easy to wire and install!

Easy to install.

Installed this in a van conversion and it is working perfectly. I have a background in electronics engineering so that certainly helped.

The original Wf-8735 converter failed in my 10 year old travel trailer. Decided to replace it with this newer automatically detecting version. The wiring for the units was pretty much identical which was great for an amateur like myself. Took pictures of all the wiring and labeled all wires prior to removal of old unit. Total time for the repair was about 2.5 hours. Obviously you have to cut off all power sources. The breakers need to be switched over as well as the fuses. Would have been a lot faster if I did not do all the labelling (but made the install much easier and less prone to a screw up). Replacement can be done by an average handyman like myself.

Mon convertisseur était brisé, j'avais un 30 A et changé pour un 40 A. Livraison rapide avec Prime, colis en bonne état et fonctionne très bien. j'avais vu un peu moins cher a d'autre endroit mais un délais de livraison beaucoup trop long.

Do job