Can you charge your batteries using a power bank?

[Fatboy]

Just looking at the new Ecoflow Delta 2, I like the fact it can be fully charged in around an hour. Has anyone got one of these Jackery, Ecoflow etc and if they plug into your EHU point will they top up the leisure batteries. The one I’m looking at is 1024w/hrs and will run at 1800w so seems a handy way of keeping the batteries topped up. Recharging it would be off for a pint or a coffee and plugging in with the owners permission and a tip of course

 

[Reallyretired]

Indeed you can. My motorhome is in storage with solar but no ehu. When we had the snow the solar was not functional and the batteries did go down a fair bit. Just charged the Ecoflow at home and took it to the store, plugged it in for a couple of hours and all was fine. Obviously you need a 13A plug to blue socket lead.

 

[Langtoftlad]

Would it not be more cost effective to replace your leisure batteries with lithium ones.
The only reason I can think of where a Jackery type would be better is if you need power in more than one location or vehicle...

 

[Reallyretired]

Would it not be more cost effective to replace your leisure batteries with lithium ones.
The only reason I can think of where a Jackery type would be better is if you need power in more than one location or vehicle...

The portable charging as in my previous post would not be possible. Cost would be higher as none of my bits have a lithium profile. It's only to run a hairdryer.
I have also used the ecoflow at home.
It wouldn't work for@fatboy either

 

[Reallyretired]

The portable charging as in my previous post would not be possible. Cost would be higher as none of my bits have a lithium profile. It's only to run a hairdryer.
I have also used the ecoflow at home

It wouldn't work for Fatboy either.

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[GMLS]

Just looking at the new Ecoflow Delta 2, I like the fact it can be fully charged in around an hour. Has anyone got one of these Jackery, Ecoflow etc and if they plug into your EHU point will they top up the leisure batteries. The one I’m looking at is 1024w/hrs and will run at 1800w so seems a handy way of keeping the batteries topped up. Recharging it would be off for a pint or a coffee and plugging in with the owners permission and a tip of course

Yup.I have just bought the new Anker 767 with some fold away solar panels and trying it out on all sorts of things inc charging the camper.Tried it on all my power tools and thanks to the 2400w inverter, runs them all Also runs my portable induction hob.

 

[Langtoftlad]

OK... so if I have 2x 100Ahr batteries drained to 50%... would one of these Ecoflow thingies replenish my leisure batteries?

Would it have to invert to 230v then back down to 14v via the charger or is a direct connection possible?
If plugging in to your EHU socket, what loss is suffered.

 

[Jo662]

I have had the EcoFlow Delta for a couple of years, and have charged my leisure batteries up a few times in the winter and it works a treat. Especially if you are stuck in one place and no solar .
I just plug it in as you would EHU.

 

[Fatboy]

OK... so if I have 2x 100Ahr batteries drained to 50%... would one of these Ecoflow thingies replenish my leisure batteries?

Would it have to invert to 230v then back down to 14v via the charger or is a direct connection possible?
If plugging in to your EHU socket, what loss is suffered.

That’s what I need to know, I think I would get about 3/4 of a charge from one but once the eco is flat I can charge it back up in around an hour

 

[Fatboy]

Would it not be more cost effective to replace your leisure batteries with lithium ones.
The only reason I can think of where a Jackery type would be better is if you need power in more than one location or vehicle...

I would agree if my Yuasa batteries were not brand new but these things are 200 quid each it’s a shame to remove them and put them on ebay

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[SpeedyDux]

OK... so if I have 2x 100Ahr batteries drained to 50%... would one of these Ecoflow thingies replenish my leisure batteries?

Would it have to invert to 230v then back down to 14v via the charger or is a direct connection possible?
If plugging in to your EHU socket, what loss is suffered.

I have bought an Allpower one with claimed 1.5Kwh capacity. It can be used to connect to the EHU socket though I haven't needed to try that yet.

The manufacturer's blurb says that using the 230v output via the built-in inverter is 85% efficient, so the power loss suffered would be 15%.

Correct me if I am wrong, but on those figures when mine has 100% charge, it should be able to charge both your 100Ah batteries from 50 to 100%.

 

[Langtoftlad]

inc charging the camper

Bearing in mind the Anker is twice the capacity (and twice the price of the Ecoflow) did it fully replenish a depleted leisure battery... and what size leisure battery.

Can anyone do the conversion to compare specs ? What is 1024watt hours in terms of a 100ahr leisure battery?

 

[Fatboy]

Bearing in mind the Anker is twice the capacity (and twice the price of the Ecoflow) did it fully replenish a depleted leisure battery... and what size leisure battery.

Can anyone do the conversion to compare specs ? What is 1024watt hours in terms of a 100ahr leisure battery?

1024w/hr divide by 12 is 85amp/hr but not sure if that is 85a/hr usable ie it’s a 100a/hr battery less 15% efficiency

 

[Reallyretired]

I have investigated the output from the ecoflow battery, stepped up to 230v by the ecoflow inverter and then stepped down again by the van charger EBL99 and the total losses are of the order of 30%. Not an efficient way of doing it, but convenient.

 

[Fatboy]

I have investigated the output from the ecoflow battery, stepped up to 230v by the ecoflow inverter and then stepped down again by the van charger EBL99 and the total losses are of the order of 30%. Not an efficient way of doing it, but convenient.

As you say convenient, if it’s not needed then no worries if it is I carry a spare 70 amps with me

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[GMLS]

Bearing in mind the Anker is twice the capacity (and twice the price of the Ecoflow) did it fully replenish a depleted leisure battery... and what size leisure battery.

Can anyone do the conversion to compare specs ? What is 1024watt hours in terms of a 100ahr leisure battery?

It's 110ah but wasn't fully depleted.It was just a bit of an experiment to test it out with different things running Inc the fridge.As pointed out above not an efficient way but great as a backup especially with the solar panels which I can connect to the leisure battery and/or powerbank when parked up.

 

[autorouter]

1024Wh is equivalent to 1024 /12 = 85Ah at 12V. If you are using it to charge a lead-acid/gel/AGM battery then you will only get about 70 to 80% charge efficiency. In other words to add 50Ah to a battery you need to put in about 70Ah, because the charging process is only about 70 to 80% efficient.

So 1024Wh ie 85Ah will only add about 85 x 0.7 = 60Ah to the battery, and with charger efficiency losses etc you'll be lucky to get 55Ah into the battery from one full charge of the Ecoflow. So it's going to take two visits to take two 100Ah batteries from 50% to 100%.

However if there's no solar and no access to hookup, a 'power station' like an Ecoflow is a good option.

 

[Fatboy]

1024Wh is equivalent to 1024 /12 = 85Ah at 12V. If you are using it to charge a lead-acid/gel/AGM battery then you will only get about 70 to 80% charge efficiency. In other words to add 50Ah to a battery you need to put in about 70Ah, because the charging process is only about 70 to 80% efficient.

So 1024Wh ie 85Ah will only add about 85 x 0.7 = 60Ah to the battery, and with charger efficiency losses etc you'll be lucky to get 55Ah into the battery from one full charge of the Ecoflow. So it's going to take two visits to take two 100Ah batteries from 50% to 100%.

However if there's no solar and no access to hookup, a 'power station' like an Ecoflow is a good option.

Still kind of works for me given it only takes an hour or so to charge. Boost on a morning and again overnight if needed