Best way to charge Ecoflow battery bank

[BOOMEL]

I have a Rapido v68 with following config:

• On-board ECU
• Two Banner 100 agm batteries in parallel
• Victron 75/15 mppt controller
• Victron shunt (about to install)
• 100 watt solar panel on roof

I want to use the roof solar panel to charge my ecoflow 500 wh battery bank (river max) and thought about the following options. Would be grateful for opinion on best option and cable requirements

1. Use 12 volt adapter and charge from this off grid. I am concerned that this will drain down agm batteries, however shunt should tell input / output. I will need auxiliary on for this to work and associated draw down
2. Use the load from mppt controller. Not sure what cables I will need for this. My understanding is that it charges batteries first and then passes charge down load function. From the load would I use some kind of 12 volt conversion or a mixture of cables to solar input on ecoflow

Which do you think is best option?

Regards

Mike

 

[Carpmart]

Your MPPT will convert solar panel voltage to that needed to charge a battery, indeed probably charging your AGMs at present. I’ve no idea if the ecothingy will allow a direct connection to a solar panel(s) but it may?

I’d suggest you get a B2B charger which will provide a good charging solution for hab batteries and Ecothingy when travelling.

 

[Al n Val]

I agree with Harvey here as well

and just so happens i’m selling my virtually brand (used twice) new Victron Orion 12/12/30 B2B and a Vanbitz battery master

Allan

 

[jumar]

I use B2B to charge mine...or rooftop panel which I can divert from habitation battery..

 

[BOOMEL]

I use B2B to charge mine...or rooftop panel which I can divert from habitation battery..

How does the latter work, connections, cables etc?

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[BOOMEL]

I agree with Harvey here as well

and just so happens i’m selling my virtually brand (used twice) new Victron Orion 12/12/30 B2B and a Vanbitz battery master

Allan

I have a b2b, however the question was more about how what is the best way to charge ecoflow from solar panel on roof of my van please?

 

[Carpmart]

I have a b2b, however the question was more about how what is the best way to charge ecoflow from solar panel on roof of my van please?

Does the splurb with Ecobobby say you can connect direct to solar, or does it need to be a regulated post MPPT optimised connection?

As to cable larger is better always, it depends on above answer and how close you are to the solar panel or MPPT but AWG 12 or 10 would be fine.

 

[VXman]

Does the mppt have 2 separate outputs for solar? One for the AGM and one for an additional battery (often they are routed to the starter but I assume your B2B does this.

Anyway, If your 100W solar is charging 200 Amh of AGM I wouldn't of thought it would have enough power to charg th ecoflow as well. Surely the solar panel would just split it's output between the AGM and the ecoflow meaning both would take forever to reach fully charged state.

I would have thought an additional solar panel dedicated to the ecoflow might be a more simple and efficient solution. Even so 500w of ecoflow is going to take a lot of charging. What's the eco flow for?

 

[BOOMEL]

Does the mppt have 2 separate outputs for solar? One for the AGM and one for an additional battery (often they are routed to the starter but I assume your B2B does this.

Anyway, If your 100W solar is charging 200 Amh of AGM I wouldn't of thought it would have enough power to charg th ecoflow as well. Surely the solar panel would just split it's output between the AGM and the ecoflow meaning both would take forever to reach fully charged state.

I would have thought an additional solar panel dedicated to the ecoflow might be a more simple and efficient solution. Even so 500w of ecoflow is going to take a lot of charging. What's the eco flow for?

The victron mppt powers tge agm batteries and there is a separate terminal called load. My understanding is that tbe mppt charges the agms first and then the load. For me this is about topping up the ecoflow battery bank with solar from the roof. We are travelling across Europe for a month this year and the ecoflow is for hair dryers / maybe coffee machines off grid. I was quoted £4k to convert to lithium and inverter, whereas tge river max means I can use it at home and is more flexible (cost me £440). It comes with an xt60 input so I guess how do I go from loan on mppt to the xt60 input on ecoflow?

 

[Reallyretired]

The load output from the solar regulator is at 12v approx and so is not suitable to connect to the solar connection on your ecoflow, though it can connect to the 12v charging input.
The behaviour of the load output on the regulator varies. It may only have an output when the solar is producing, or it may just provide a 12v source all the time.

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[Reallyretired]

Also the river max inverter is only 600w so not really adequate for a hairdryer you need to look at the Delta range.

 

[Raul]

If you look on the mppt manual, you will see detailed description for the load output, and it’s capabilities. Those regulators are intended for street lighting, and load IS configurable in settings, but not for charging your eco flow, it will draw to much and burn the load fuse.
As mentioned already, the 100w panel is barely enough for the agm, let alone for other charging tasks. If you really want to charge it from solar, the via 12v socket it’s better as will limit the amps and only in full sun so the panel and agm contribute.

 

[ED O'DARAC]

Hi. I have added an EcoFlow Delta MK1 (1200w/100Ah) Lithium in the garage of my Carado with the two 150w solar panels feeding it directly via the solar input.
This keeps the EcoFlow topped up and I then use the mains output to "run the van" via 240v.
It isn't enough to run the fridge totally on 240v, but in the summer sun it gave 4-5 hours of complete running via 240v.
I am wanting to be completely autonomous from hookup and sites, so I shall be changing to a Delta MK2 plus an additional battery and increasing my solar to 450w (all wired in series as the Delta MK2 can take higher solar voltage).
It worked well, with virtually no wiring and allowed mains power at any time plus saved quite a bit of gas refilling over five weeks of summer sun.
I know there are cheaper, motorhome-specific/12v systems available but this is so simple and everything just works together.
I like the idea of having duplication of systems as it allows resilience and self reliance. Also, the battery system can be used at home.
I hope that helps.

 

[Tigger-Tim]

I have an Ecoflow Delta2 - bought to power my coffee maker off grid and also to better survive powercuts at home.

There's no easy way to split the solar panel on the roof. I guess I could add an extra panel, but the powerbank only drops 3% for each mug of coffee, so I'll probably just top it up via the cigarette lighter socket. Or on site when I'm hooked up.

 

[BOOMEL]

I have an Ecoflow Delta2 - bought to power my coffee maker off grid and also to better survive powercuts at home.

There's no easy way to split the solar panel on the roof. I guess I could add an extra panel, but the powerbank only drops 3% for each mug of coffee, so I'll probably just top it up via the cigarette lighter socket. Or on site when I'm hooked up.

I think you are right, just tried coffee machine, hair dryer works great. For me really beats the £4k I was quoted for lithium upgrade

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[ED O'DARAC]

Just about to change from Delta MK1 to Delta 2 and I shall add a second battery. I have my solar charging the Delta which charges the van . As ever, I want more solar and more storage....

 

[GMLS]

I've got the Anker 767 and when the van arrives plan on getting an MC4 splitter cable fixed in the garage with a diverter (solar supply comes from roof down to leisure batteries in the garage) so we can charge it there or via cigarette lighter connection in the van.Also bought these folding panels to use when we are away in the classic vw

 

[autorouter]

There's no easy way to split the solar panel on the roof.

No need to split it. You could fit an Andersen connector on the solar panel feed. Then another Andersen connector to the MH solar controller input. Yet another Andersen connector to the solar input of the power station. Then you can just unplug the MH and send the solar power to the power station. You can reconnect the MH solar controller when you take out the power station, so it stays charged up when not in use.