⚡️ Renogy 20A On-Board Battery Charger for Flooded, Gel, AGM, and Lithium Batteries: Multi-stage Charging Review

I haven't connected it yet, but so far I'm disappointed with the instructions and surprised that it doesn't include a temperature sensor. It lists the part number for the sensor, but that part number doesn't show up with google results and I can't find it for sale anywhere so far. UPDATE: I spoke to Renogy and he was told that the temp sensor is not yet available for purchase and they cannot give a time frame when it will be available for sale.

Spent the whole weekend rewiring my camper to make room for this charger and all about #4 -Connect wire and custom cables. I finally did everything and after all this work and money the device doesn't work. Doesn't turn on, doesn't pass on a signal. It goes back to Revain. I noticed that another reviewer had an issue with the "on" switch. This could also be an issue with my device, but how do I know about it with totally useless incomplete instructions that say nothing about the requirements to

I bought these to properly charge the Renogy 50AH lithium home battery on my Volkswagen Euro Camper Van while driving the van. I've done quite a bit of 12v wiring on both our boat and RV, but it was almost embarrassing. The product is too big and the instructions look more like a cartoon than real instructions. This is an absolutely horrible product and a quality company like Renogy (I have a Renogy solar panel, controller and lithium battery) should be ashamed of this piece of junk. I could…

I spent at least four hours (mostly on hold) making four different calls to resolve a technical issue with this charger and each time the technicians got it wrong. They misdiagnosed a condition where the charger started charging two lithium ion batteries and then after about 5 minutes the charging current decreased until it eventually dropped to zero and the charger shut down. First they said it was a bad motherboard and then after swapping out the replacement unit only to get the same…

I bought this to charge my new LiFePO4 DIY battery in my RV. I set it up so that the charger turns on when the truck's high beams come on. Wire tips are awkward to use, but they seem to stick to the wire very well. The good news is that it works and I saw 20 amps charging current through my Victron Battery Monitor. Two stars deducted for lack of support - a forum that Renogy doesn't respond to should complement a poorly translated written guide. The DIP switch configurations in the manual are…

I chose this model so my truck can charge my RV battery without taking it home having to charge on wheels. Battery. It does its job, works and allows me to turn my 12 volt fridge on and plug it into the truck while driving. Unfortunately, the ignition lock is annoying. There is no way to mount this in the engine bay of my truck or under my truck so it is not exposed to the elements. So how the heck am I supposed to get a 12 volt ignition switch all the way to the RV? Instead, I just have to…

This Renogy 40A DC Charger is a very good product with a reasonable price. Most similar products cost over $300, but this one costs less than $200. I just hooked up this charger to charge a 12 volt 100 amp lithium iron phosphate battery (second battery) in my van from the van alternator. Setting the DIP switches was a little confusing, but I figured out the setting for a 12V lithium iron phosphate battery. My settings are s1=off, s2=on for a constant voltage of 14.1V (you can set 14.4V but I'm…

If you have a lifepo4 battery you know that charging outside of the solar panel can be a problem, this device really solves that problem. I charge a 200ah lifepo4 battery on a retractable trailer that I use for off grid camping for up to two weeks. I was looking for a charger that could be used by my 1800 watt generator or charged from shore but as it's not in my price range I found this one instead. I chose the 20A version as I don't want to put too much strain on my alternator and may also…

Charger received but delayed installation in my RV. The return window closed before I could install and test the device. I could not get the device to charge after installation even after testing and retesting the installation. I still had no output from the charger even though the green light was on. Eventually I gave up and contacted Renogy CS and sent a video of my testing, setup and setup. They sent me an RMA. After receiving the device they tested it and told me it was working fine and I…