10kw solar and Lithium bank required.

barryd

barryd

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After boasting about how great my single 120ah AGM battery I got off @RichardHelen262 for fifty quid with my MPPT controller and 100w panel I now fear it's not enough.

The reason for that is Mrs Bingo. She got that used to having off grid leccy in the legendary summer of 2022 she just can't stop using power. Her technology arsenal has increased also as has her data allowance. So she's always streaming stuff, charging laptops, smartphones and all sorts day and night like electricity grows on trees or something!

I can see what's going to happen if this Indian summer nobody promised doesn't materialise. She will carry on as normal and my beloved AGM battery will finally drop below the 12.0v level of battery Armageddon! Worse than that. After travelling since June we may have to find "A hookup". :(

What do I need? 😎
 
barryd said:
After boasting about how great my single 120ah AGM battery I got off @RichardHelen262 for fifty quid with my MPPT controller and 100w panel I now fear it's not enough.

The reason for that is Mrs Bingo. She got that used to having off grid leccy in the legendary summer of 2022 she just can't stop using power. Her technology arsenal has increased also as has her data allowance. So she's always streaming stuff, charging laptops, smartphones and all sorts day and night like electricity grows on trees or something!

I can see what's going to happen if this Indian summer nobody promised doesn't materialise. She will carry on as normal and my beloved AGM battery will finally drop below the 12.0v level of battery Armageddon! Worse than that. After travelling since June we may have to find "A hookup". :(

What do I need? 😎
Click to expand...
Sizewell B?
 
My fridge and invertor take 100amps a day on stand by. A coffee takes 10amps and a breakfast for 2 takes 30amps. Then we get up !!! Van now harvest 1kwh a day but need more.
ABBA daba doo , more more more !
Victron just tells you to buy buy buy and them blue things are like chaz and daves song rabbit they just won't stop talking

NICE.
 
A rule of thumb solar guide is that you require 2w of solar for every 1ah of battery.

Don’t know how much of the 120ah AGM battery is usable but if it’s 80% or 96ah then maybe more solar is required.

We have a 200ah Lithium solar generator (200ah usable although net 160ah after inverter efficiency loss) and a 400w portable solar panel array and a 100ah lead acid battery (50ah useable) with a 100w fixed solar panel.

Why all the charging by Mrs Bingo at night? Isn’t daytime when the sun is out sufficient?

Could be worthwhile picking up an Ecoflow River 2 for around £230 (current late August sale price) which should cover all of Mrs Bingo’s charging needs and you can charge it up daytime using the 12v habitation socket when the solar panel is doing its stuff. It will also power the 12v TV. You can then use the leisure battery for essentials of lighting, water pump and heating pumps or fans only.
 
Brilliant replies thanks but I feel a bit bad as my post was a bit tongue in cheek. 😁

The set up we have has been brilliant but probably mainly because of my decades old habit of being a bit frugal. Even our telly only draws 14w and my laptop not under stress around 12w. It's like being on hookup in our van normally April to September but this summer I reckon Mrs B is on a mission to ruin that. 😁
 
10Kw of solar requires around 70m2 and will generate around 55kw of energy on a good summers day.

So a motorhome 2.4m wide would have to be 29m long.

Sadly the longest rigid vehicle permitted on U.K. roads is 12m.

So assuming say 80% roof coverage allowing for skylights and other roof fixtures the maximum available area possible is 23m2 so the maximum possible solar panel spec is 3.25Kw and assuming the panels are flat on the roof you will generate around 13Kw on a good sunny U.K. summer day.

Basically when on hook and if we don’t use heating but do use hot water we use around 6Kw daily.

Working back you require around 10m2 of solar panelling on the roof to provide this. And the means to store the power.

Which actually is feasible on the roof of a 7.5m motorhome.
 
Barry, give her a choice of get rid the energy using devices, if she says no, I’d say that is grounds for divorce 🫣
 
Moped said:
10Kw of solar requires around 70m2 and will generate around 55kw of energy on a good summers day.

So a motorhome 2.4m wide would have to be 29m long.

Sadly the longest rigid vehicle permitted on U.K. roads is 12m.

So assuming say 80% roof coverage allowing for skylights and other roof fixtures the maximum available area possible is 23m2 so the maximum possible solar panel spec is 3.25Kw and assuming the panels are flat on the roof you will generate around 13Kw on a good sunny U.K. summer day.

Basically when on hook and if we don’t use heating but do use hot water we use around 6Kw daily.

Working back you require around 10m2 of solar panelling on the roof to provide this. And the means to store the power.

Which actually is feasible on the roof of a 7.5m motorhome.
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But surely there must be a way in this technological age to produce a kind of "condensed" super panel. One that's maybe only twelve inches square but with the use of a Flux Capacitor concentrates the energy and amplifies it to 1.21 Gigawatts. I bet I could run my Marshall stack off that. 😎
 
Robmac said:
Barry, buy Michelle a Peloton type exercise bike for use next to the van. Tell her you want her to maintain that beautiful, trim figure and be healthy forever.

But also rig up a dynamo and hook it up to the batteries. She'll never know. :)
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Oooh there she goes! Spent an hour or so up the front doing something on her laptop while draining my phone battery via it's hotspot. Down she comes, satellite on, TV on, laptop on her knee plugged into the inverter now, phone on. It never ends! Im just sat here with a lowly phone. 😳

She knows it's gonna rain tomorrow all day. What happened to Books? 🤣
 
barryd said:
Oooh there she goes! Spent an hour or so up the front doing something on her laptop while draining my phone battery via it's hotspot. Down she comes, satellite on, TV on, laptop on her knee plugged into the inverter now, phone on. It never ends! Im just sat here with a lowly phone. 😳

She knows it's gonna rain tomorrow all day. What happened to Books? 🤣
Click to expand...
Had the same problem last week with a female, but she was 12 y.o.
 
barryd said:
Oooh there she goes! Spent an hour or so up the front doing something on her laptop while draining my phone battery via it's hotspot. Down she comes, satellite on, TV on, laptop on her knee plugged into the inverter now, phone on. It never ends! Im just sat here with a lowly phone. 😳

She knows it's gonna rain tomorrow all day. What happened to Books? 🤣
Click to expand...
Just go and get a fancy new lithium for heavens sake :p

Try one of these and then let me know if it's any good, or the pro option one. :ROFLMAO:

https://www.fogstar.co.uk/collectio.../products/fogstar-drift-300ah-leisure-battery
 
mark61 said:
Just go and get a fancy new lithium for heavens sake :p

Try one of these and then let me know if it's any good, or the pro option one. :ROFLMAO:

https://www.fogstar.co.uk/collectio.../products/fogstar-drift-300ah-leisure-battery
Click to expand...

That would fit I think actually. However I could get 10 AGM batteries off Richard off here for that! 😁

I'm just going to let her get on with it. When she finally uses up all the ampies I'll book us onto a posh site at £60 a night or summat. She hates spending money so that'll teach her!

To be fair all summer despite it being shite it's never been below 12.4. but, BUT! Winter is coming! 😂
 
barryd said:
But surely there must be a way in this technological age to produce a kind of "condensed" super panel. One that's maybe only twelve inches square but with the use of a Flux Capacitor concentrates the energy and amplifies it to 1.21 Gigawatts. I bet I could run my Marshall stack off that. 😎
Click to expand...
Mount panels vertically on the side walls and back of the van. Mount panels over the windows or they become tiltable:)

Oh yes and fill the roof and bonnet :)

Or do like me and carry a 1Kw genny for it/when needed 😂😂😂😂
 
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