During our build, we've made some calculation
How much energy would we need to run all of our equipment onboard.
And it seems that we did the right calculation there.
Because we never run out of electricity so far.
Sometimes we turned off the fridge, but...
Yeah we had to, but it's another story
so we'll go through all electronic system
and see how much electricity you need to run all of your stuff.
So we have off grid panels, which gives us electricity anywhere we are if the sun is shining.
And we usually not stopping at the camping sites.
What if someone stops at the camp sites?
Should they worry about the electricity that much?
Yes and no.
No - because usually you have electrical plug and you just connect yourself
and you have all the electricity you need
Just make sure that the cable is not too thin and not too long.
The longer the cable, the more waste you have.
But, sometimes we stopped at the camping sites and they said:
Hey! We have spot, but not with electricity.
So that was...
Even if they had plug for us, we don't have the charger. Converter for the batteries.
So it wouldn't work for us in any way
Because we've wild travellers.
But if you are the guy who likes camping sites, you are more covered on this subject.
And maybe you don't even need solar panels.
What solar panels do we have onboard?
At this moment we have 2 panels. Each one 140 Watts
They are connected to the 2 batteries. Each one is 100 Amps.
And we have a 600 Watts inverter.
That's what we have.
There are different shapes and sizes of the solar panels
So check what's the best set up for your roof
Check our previous video, and see what mistakes we've done.
~Bad experience
And remember that, solar panels not going directly to the batteries and they need controller.
How did we calculate our energy need.
We made a list of things we think we will use.
Which is iPhone, iPad, reader, computers, fridge, fan, lights.
And we wrote down how many hours per day we think we will use them.
Theoretically. We were kinda guessing. Medium stuff.
And we end up with amount of power we need
So from that power, amount of Watts we need, we started to figure out how big the solar panels can be
and how many hours they can stay under... I mean...
How much energy they can produce in our area.
Yeah, remember that it will never give you 100% of output because of the some dust on the surface
some inefficiency of the cable passage and of course the tilt (angle of the roof).
I think that's the big deal.
The tilt it's the biggest deal.
Because if the panels are not staying straight.
I mean...
Or you just keep it 90*, the van can stay like that
So we just minus 30% of possible energy the solar panels can give you.
So we end up with this number we have, and we just multiply by medium hours
we need to cover the consumption we need.
And we thought... 6 hours it's possible in our area to produce that amount of energy.
And that's how we kinda...
Ended up with 280 Watts solar panels.
If your device is not showing exactly how much watts it consuming
then you can just simply multiply the voltage to amps and you will have Watt number.
If the sun is not shining at some point,
you basically divide the total amount of energy you need by 12 Volts of your system
and you will end up with the number of Amps you need to survive you kinda requirement for one day.
And in our case.
With our set up now we can survive 2 days.
But as you see what's the biggest consumption here?
The biggest is the fridge. It makes half of our consumption. Daily consumption.
It's a big kick in our energy system.
So we were comparing to compressor. Electric compressor fridge and it consumes nothing pretty much.
But costs fortune.
But I think that's what we will go for, because with that set up. With our ideal set up which you can see here...
We can survive like four or five days I guess.
Yeah, yeah...
With a different fridge.
Without sun, without moving. Just staying in one place.
If we bought that fridge straight from the beginning and we redo calculations like we are doing now.
We would most probably buy smaller panels and smaller batteries.
Yes, you can some space. Space on the roof. Some weight.
Space on the roof and some weight in the trunk.
Batteries are heavy.
We had to keep the fridge off sometimes, just to save some energy, and when it's off
we almost consuming nothing of energy there. It's always the batteries full. And it's just beautiful.
We've met some travellers on the road and they had a small van. Smaller than ours.
And they just were surfing all the time.
So they had couple of iPhones. Maybe kindle and couple of lights. That's it.
So for that set up you don't even need the solar system.
And I guess for a lot of people that will work just fine, because you need just to have small battery
and maybe a small portable solar panel or alternator.
Yeah, if you have the 50 Amps you have basically 1-2 weeks of freedom staying in one spot.
Exactly and you just put on the front on the windshield
the small solar panels and will be more then enough.
Imagine, you take a half an hour ride to the supermarket. Half an hour ride back.
Your alternator can charge 35-40 Amps straight to your batteries per hour. In one hour 40 Amps add.
So it's total the maximum. Yeah.
There are different models, but the standard one which we have now it is 35-40 Amps.
That's quite a lot. That's quite a lot.
So if we have empty batteries and we drive for 5 hours - they will be completely full.
While we were making video about electrical stuff on the van
We discovered this device that we didn't have
It's pretty much the same company we have everything: solar panels, batteries, pretty much the whole system
But we didn't have this one and when we contacted NDS company
Surprisingly they checked our videos and like:
-Look, you don't have this device that can be good upgrade for your van
Because it will optimise the work of alternator, solar panels
And pretty much we can charge our batteries from the plug as well
So it can be quite convenient even if don't stay in the camp sites that much
What's the other way of charging the batteries?
There are other ways of course. There are plenty of them.
One of them is portable small generator that you just bring it outside. Turn it on.
It's consumes nothing. Almost nothing. Quite cheap and it can charge your batteries.
Some of them have a plug, so you can just connect directly there 220.
So you don't even need to have inverter in this case I guess.
Some of them have 12 Volts output, so you can charge directly your batteries from that thing.
That could work. Imagine if there is not much sun and you just put it on. Turn it on.
If you want to be parked on the beach for weeks, you can put that thing sometime once in 3 days and charge your batteries completely.
Yeah. It's really small. It's really compact, so you can store it really nicely.
It's small like a briefcase, you can walk around with it :)
There are different types of batteries, but the most used ones in camper there are deep cycle ones.
There are different types there.
They are nice to keep the energy but they are not nice with the pricing.
They are pretty expensive.
Really expensive.
In case you have more then one battery you can connect in parallel, so you kinda double your power reserve
so you can stay more out without needing to recharge them.
Or you can connect in series, so you can double the voltage.
And you can also connect parallel with series all together mixing up like you want.
Remember that batteries don't like to be discharged to zero.
We wouldn't even go like less then 20 or 30 percent
because it will influence the amount of cycles you have and lifetime of your batteries.
Yeah, and discharging to zero without recharging the battery, you might even throw the battery.
How do you know when you need to recharge the battery?
How much is 20 percent? How do you know that it's 20%?
You need to look for the stars and see the north pole star. No. Just kidding.
In our case we have iManager that do all the job for us.
It's pretty much shows what we have on each battery and it swaps for us from one to another
or put on charge both of them.
So it's quite useful device. The nice thing it will disconnect automatically the batteries if the voltage is going to low.
Less than 11 or something...
And that's what you want to know is.
How much voltage you have.
If you don't have this iManager pretty much you can go for voltmeter.
That's what you need to install and that will show you the voltage of each battery.
And of course the switch from one to another or to put in parallel both of them or shut down all the system.
If you connecting the batteries together
make sure that they are more or less same age, same capacity.
So basically the same batteries. You don't want to connect old with new.
And remember that air temperature influence a lot the capacity of the output of the batteries.
So don't expect too much from the batteries if you travel to the North Pole.
We have 200, but we are thinking that we have 160.
I'm not considering last 40A at all on the batteries.
Yeah, let's keep them there. Safe.
Talking about inverter. You can limit yourself to 12 Volts and probably for a lot of people that can be more than enough
if you just using your iPhone and maybe couple of lights there.
But in a lot of cases maybe you wanna use more powerful tools, more powerful equipment and that's why you need an inverter.
Yeah. We have one.
It's 600Watts. We chose it because we were thinking same way. How much energy we can use at the same moment.
So we add up everything and we end up with a number. Okey, let's take this.
But at this moment I think we should...
Our conclusion is - we need bigger one. At least 1000 Watts inverter.
Yes, and another point we have 600 - don't think that you can plug 600 thing and it's gonna run forever. No.
You need to leave some gap. Like for example when we were building the camper we used the drill which was 550Watts.
We turn it on - it starting to run and then it turns off
because it's not keeping up with the high constant consumption I guess.
So if you want to use 800 Watts - take 1000. You need to give a bit of space.
And remember that every inverter consumes some power
so don't go for the higher number, for 3000 Watts inverter, because it will consume quite a lot.
Even our inverter 600 Watts consumes 0.7 Amps. Just to stand by.
So for that reason we will install the switch.
So kinda turn on the inverter only when we need use the computer or other electrical things and turn off after.
Can you explain the difference between pure sin wave and modified wave inverters?
Modified wave is pretty cheap and pure sin wave is basically pure and clean energy as you have at home.
Why you want to use pure sin. Where you want to use pure sin inverter is
for devices which have kinda engine or rotor inside.
For example the blender will run much smoother and with less buzz with less noise and less overheating.
They tested. They are kinda okey, you can use the computer, but there is a high risk it will overheat the charger.
Yeah. Since our computer is not cheap and I don't want to waste, to kinda burn it or something.
So basically I wasn't even thinking. I just bought pure energy.
On blog we found comparison between 2 inverters
and modified wave is basically kinda car with square wheels and pure sin is with round wheels.
Both of them are going, both of them are fine
but one is jumpy experience, but still going, when the another one is just smooth and nice ride.
I hope everyone survived on modified wave.
A bit technical here. Volts are measurements of the strength, so how strong is your system.
And Amps is basically how much current you have going through the...
Kinda the speed. If you have one lamp - it consumes one thing, if you have five lamps it consuming another thing.
And if you adapt too many lamps your cable might heat up and burn.
So it's not a bad idea to install some fuses. It's like a speed limit thing.
If you just overtake, you will get this fine. It burns.
But it doesn't burn the cable it burns the fuse.
Yeah and there are different, like: highway, super highway.
Different speeds. It's complicated.
So you choose the right cable for you and right fuses for the thing. Exactly.
The cables very important. We did some research, we spoke with electrician today.
Basically, what confused me a bit.
I was thinking that: Okey for 12 volts you need thinner cable and for 220 volts it's bigger number - you need bigger cable.
And in reality it's completely not opposite. It's completely slightly not correct.
Basically if you have 100W consumption on 12 Volts you need much thicker cable, than if you would have 100W on 220V.
Exactly. I didn't knew that.
So be careful when you install on one cable, on one line too many electronic devices
like fridge, light, chargers and everything all together.
Because it should be quite thick to be able to bring enough power and not overheat.
Especially the cable from the battery. Maybe which goes to main hub for 12 Volts.
You don't want to put too many thing of that cable because... In our case the fridge it's kinda big consumption thing.
35 Watts. Yeah so we need at least 1mm square cable for that one.
Yeah but in our case it's good that we installed like different kinda branches.
So to the lights there is one cable, to the fridge there is another cable, so it's all separated, so we are kinda safe.
Check out the table and see how big the cable you would need. Exactly.
That's why on these electrical cable lines they are going up to 1.000.000 volts, so there is no loss at all.
They are quite thick should be? No, it doesn't mean.
Because you have so high voltage, you amperage can be low, so it's not heating up the cable and it's quite efficient.
It's a smart move for them. Maybe we should increase here a bit of power.
So let's have a look on the Macbook charger and we see it's 87W
but in reality when you connect it to the outlet, it's not consuming 87W all the time.
As soon as the batteries are getting full, it starts to consume less
and when the batteries completely full it's not consuming anymore the...
But when it's overheating it consumed more I guess. Yes.
So what we've done... We drove in the night.
We parked and we decided to check all our equipment in the night when there is no sunlight
and the solar panels don't give any input to the system.
We could just disconnect the cables but it was kinda more adventurous thing. You know...
We start from turning off everything apart of the inverter, so we see how much the inverter consumes.
Yeah and after we will connect slowly the phone, the iPad, computer.
We'll just go through scenarios which might happen in your life.
We took some blender, another type of blender. If you want to make a cake.
We don't keep them onboard. No we just took them for curiosity.
And took even screen here. Imagine you put screen here instead of the mirror.
Let's see how much the inverter takes.
So, in complete darkness - it's minus 0.7Amps.
Now we turn on the strongest LED lights which are five lamps and they are basically consume you 2 Amps.
Now we have the LED on the wall 100% on and you can see it consumes 2.3Amps.
It's quite a lot, it's more than the LED light here above the kitchen.
If we will put 25% it consumes very little, so that's probably the best way to use it.
And the same you can see for the under the table stripe.
When it's 100% it consumes quite a lot.
25% - it drops drastically and it's just 0.3 Amps.
From now on we'll keep the lights on and we start to test other things. Yeah.
So we have lights while we doing it. I wanna see how much fan consumes.
Okey. Now it's the minimum spinning and it's minus 3. Almost nothing.
Let's go up.
It's full on.
That's maximum speed. That's 3.2 Amps. It consumes quite a lot when it's running full speed.
Let's see how much fridge consumes.
Straight to minus 6.3 Amps.
So the main reason of having two batteries and solar system is to be able to work on the road.
And right now I have 18% on the computer, so for sure as soon as I connect it will start to charge.
We have minus 9 Amps all around. It goes up and down.
That means that computer consumes around 6.2 Amps.
Which is... If you take 6.2 and multiply by 12 Volts, you will have 74 Watts. Which is this one is 87.
When the batteries are charged and it's closed - it's not consuming anything.
As soon as you open the screen and the screen lids up, it consumes 2 Amps more or less.
Additional when the batteries are full.
You kinda going to sleep and you have 2 iPhones on charge all the time.
Yeah.
Without light you have 5.4. For 10 hours - it's 50 Amps.
So it's already... 25% of the battery. Yeah.
If it's cloudy day, you will not keep your fridge all the time.
You need another type of fridge. Compressor fridge. Yeah.
Let's imagine you want a nice smoothie in the morning. I would love to have one.
We turn it on.
As we see it's written here 150 Watts and it was 11Amps more or less.
So it was 130 Watts, so it's basically more or less true.
Which is fine but at the beginning you saw it's jumping up and then dropping down.
2.9
This one actually consumed less, but I feel like if you put things and it starts to blend, it will consume more.
Pancakes. We love pancakes.
10.5
Connect the screen.
Minus 5.1
So it's only 2 Amps consumption.
So this thing consumes like 2 iPhones.
Durning the day it's really possible to sit and work on the screen
even if you put much bigger screen it is possible to sit down and use with the computer.
DJI Mavic Air battery. Starting to charge.
And surprisingly it's minus 8.2 Amps.
Quite a lot. What you can do is just to multiply Voltage
13.2 multiplied by 3.79 which makes 50 Watts.
And that's more or less what the thing was showing us the consumption.
50 Watts you diving by 12 Volts - it was 4.1-4.2.
If you want to know how much any of the devices consuming, you just multiply Voltage by Amps and you will have Watts.
And then if you divide those Watts to 12 Volts on our system, you will have how much Amps it consumes.
And then you have your batteries, which are 100 or 200 or how much you have and you start to think as...
Yeah... Simple calculation.
You have 200 Amps
if you leave you computer which is taking 8 Amps
more or less for 2 hours - it will consume 16 Amps.
And surprisingly your heater also consumes a bit of energy.
It jumps to minus 11, minus 14.
But it takes that amount of electricity only at the beginning.
Now after 5 minus, the consumption dropped to minus 4.8 Amps.
You know what surprised me the most?
No.
I'll tell you. I will tell you. The consumption of the LED stripes at 100% of power.
It's strangely but it consumes more than LED light above the kitchen.
And it's massive difference because when it's on 25% it consumes almost nothing.
But we will buy this remote control and we will test if these lamps will work. Same dimming thing.
Check it out in our refit video if it's gonna work or not.
Yeah and another point is. It's not electrical, but
These curtains they are doing great isolation of temperature.
And it means that you might use much less of your heater.
Because heater consumes quite a bit of power apart of fuel.
I feel like its not a bad idea to use one line of products all together
What I mean is from one brand
Check maybe in your area, in your country lets say, what's the main producer
For electrical supply for the vans, lets say
Yeah, and the reason is like stupid example: its like Macintosh and Windows
I went to exhibition of campers in Parma, which was couple of years ago
And I saw their [NDS] stand
That's how we discovered the website and the products
And the stand was great: solar panels were looking...
Some nice ladies I guess!?!
No, actually the "sexy" solar panels 140 Watt
So that is how I caught the brand
I didn't know that solar panels excite you that much
No, it's not but they looked quality
I am quite happy for them, I mean, they should be happy with us
Because we left quite a few Euros there
If you check out how much we spent on solar panels and all other things
But at least the stuff is good
Big importance is to use iPhone charger on 12 Volts.
Yeah. Thank what we are planning to swap
because in a lot of cases that's more than enough
and you don't want use inverter to charge your iPhones kinda.
We want to limit the use of inverter
to minimum so we will put that on/off switch
so we can use only when we need to charge computers or use some big electric devices.
For everything else is better to use 12 Volts because there is no loss of...
Because this inverter is 93% efficiency.
Where are the 7% efficiency going? Ehhh!
But if it's sunny days. There are no clouds at all, I wouldn't ever care to turn off the inverter.
If you have more than enough energy - just use it.
It's more in the winter, when it's cloudy, the days are short, then you want to save as much energy as you can.
And maybe you got like a bad week when it's raining, raining, raining.
And those LED batteries on the cupboards I think it's great solution also. It removes you headache of
passing the cables for each location and obviously you need to charge them, but it's not that often.
Why do we need computers at all?
We use them to edit, to make some videos for YouTube and for Instagram channel.
Ohhh you said Instagram. I will not stop promoting our channel, because...
You are doing great job here i think... Thank you.
Because I feel like we are putting a lot of time, a lot of effort to that thing.
To create these nice videos
and I feel like Instagram make them unseen
so we want to encourage you to see if you like the staff.
Check them out and if you like subscribe.
Voila. As usual the link button is free for now and like button as well
and if you enjoy this video, just subscribe because you might see better ones.
Because we improving here.
Drastically.
Voila. Thank you.
Arrivederci. Ciao.
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