EF ECOFLOW 800W Alternator Charger, 3-in-1 Fast DC-DC Charger for Portable Power Stations, Car Battery Charger & Jump Starter 8× Faster Than Cigarette Chargers, Charges 1kWh in 1.3 hr

Love this charger! Opens up so many alternative ways to keep batteries charged up while away from standard power supplies. Solar, alternator, battery banks, electric generators, these are all options. I’m discovering new ways to use it all the time.

Installed into my 2004 Silverado 1500, and I get full 800 watts in. Install was easy. The product is very robust.

Absolute game changer. Recharges my Delta Max at a full 800w of power while im driving to work. I just plug it in and forget it and its charged when i get to work. Use the ecoflow delta all day at work, plug it in on my way home and its charged.Cable is really stiff so is a bit hard to run the cable but was able to get it hidden well in my Promaster.Had to set the charging voltage to match my running voltage otherwise it will charge when your car is off.

I'm using this to expand the storage capacity of my Ecoflow Delta 3 plus. I have this running in 24v mode connected to a pair of 100AH LiFePo4 batteries. I plan to expand that battery string to 4 and eventually 6 to get longer runtime at a lower cost than Ecoflow's add-on batteries.This works well for what I wanted accomplish. The device itself is pretty large for what it does. It stays cool.I fully dislike having to use a separate tool to disconnect the cables. There are many existing locking cable harness connector designs that require no tools. One time, the mobile app showed some communication issues with this device and suggested that I reset it at the power button. A reset took care of the issue, but it could happen in a less convenient time.

Out of the box first impressions: Unit is a little larger than I anticipated/visualized but I can make it fit. Did a dry-fit installation this afternoon. From start to commissioning was less than 2 hours. Now I still have to dress in the cable on the inside of the vehicle, but getting through the firewall of my Dodge Grand Caravan using an existing grommet was very easy thanks to the very flexible and slightly slippery cable loom. One of the easiest cable pulls this old cable guy has ever done. Just use a small stiff wire like solid ground or even a coat hanger and plenty of tape to push through.Connections to the battery were equally simple, the in-line fuse block is small enough to tuck in anywhere and I found a good spot next to the battery to route directly into the driver's side footwell. From there it was simple to run along the rocker panels to the back where I have my Ecoflow Delta Pro battery installed. I mounted the unit inside a homemade storage box sized to fit in the stow-and-go well with the Delta Pro right next to the box. The cable that runs from the alternator charger to the battery is fairly short but long enough for my installation. That may change as the build evolves.Commissioning was easy and straightforward. Starting the vehicle brought the charger online. As soon as I opened up the Ecoflow App it detected a new device, figured out what it is and right away began charging the Delta Pro! Of course nothing was set up so it jumped to the default 800 Watts current. I had to quickly reduce the max charge current to 25 Amps because I don't want to overload my alternator (I plan on upgrading to a heavy duty alternator soon). 25 A is still pumping in 350 Watts @ 14 volts input so plenty of power. In fact I will probably leave the max current between 25 and 40 A even with an upgraded alternator just to keep from pushing the batteries too hard, because slower charging is still better for the life of the batteries anyway.This minivan build is one of those things that just happens. I'm using a lot of parts and ideas I used for car camping in my Cherokee, and adding on a few like this. I like that the installation was so simple after working with more complicated setups that required a lot of different components that take up a lot of wall space. This was literally two cables and two boxes, one of which takes a fraction of the space of more complicated setups.

Didn't come with the adapter for the ecoflow delta pro... totally ruined my trip when I found out the week before setting out that I needed it.

Works great. One thing to know though… if you’re idling (especially if you’re running AC) you’re not going to get 800w or anything close. If idling with the AC on you’ll get from ZERO WATTS to 500-600 watts depending on the load the vehicle is drawing. The only way I see 800w is while actually driving not at idle.

This is an amazing product. I run a HCalory 8Kw Diesel heater for 10 hours using approx 50% of my EF Delta 3 battery. Connecting the battery to the 800W Alternator Charger recharges the battery from 45% to 100% in about 50 minutes. I basically let the truck run for 50 minutes at idle, or when I am off-roading and the battery is at 100%. This allows me to extend my overland time. Love it and recommend it.