How much solar would i need to run this A/C?

Van Living Forum

Help Support Van Living Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
B and C said:
I don't have lithium, I have agm but the amount of power going in and out can be monitored with a shunt (of sufficient size) and a smart meter to interpret what is happening.  I have a Bogart Engineering TM-2030-RV monitor with a 500 amp shunt.  Not cheap but works very well for me and a lot of other RVer's.  It has a bonus of monitoring the engine battery volts only too.  Others may point you to something much cheaper.  Buyer beware as you hope you get what you pay for.

Bogart Engineering
I've been looking around for something lithium friendly. From what I understand, since we are dealing with milivolt differences for lithium state of charge, these type of monitors aren't very accurate.  If anyone knows more please tell. I just bought a cheapo 20$ 100A shunt coulumb monitor this week. I was going to use it more to monitor the discharging and just play around with it.
 
The Bogart meter measures amps in and out. It also displays the voltage and gives a percentage of full. It is not a dumb meter. You need to tell it the battery bank size so it knows what the charge percentage is. I would call the coulomb meter one step above a voltmeter. For lithium the voltage part is probably mute but the rest is spot on. If you want to know where your batteries stand, the Bogart is the way to go.

Edit to add: I didn't buy it to throw money away, I bought it because of its' value to me. Nice to know my state of charge at a glance.
 
I just knew my ears were burning. lol

The easiest way to monitor lithium batteries is to buy lithium batteries with a blue tooth app that shows you the level of charge on your cell phone or tablet.

lifebluebattery.com

The link to the A/C is down but having it be 240 volt kinda sucks but is not insurmountable. Still there are better options.

Designing solar is easy. Put as much as you can on the roof and fill the battery bay. Learn to live with what you got because you can not improve either.
 
That statement says it all "learn to live with what you got because you can not improve either." People that have never lived off grid don't realize what they are giving up when they unplug from the grid. You are forced to move with the seasons in most cases if you want to remain as comfortable as you were when you had AC and heating 24/7 provided by the grid. If you can afford, have the carrying capacity and space for the latest tech batteries, thousands of watts of solar and a generator in case you get one too many cloudy days then you have a shot at living a nomadic life with few compromises. Odds improve dramatically if you follow the seasons. It seems to me a van would have to be well insulated, completely covered with solar cells, carry a generator, have several batteries and a mini split or extremely low wattage ac to stay cool in 100 degree outside temps and maintain interior temps in the 70's not to mention heating in below freezing, humid cloudy months like in the northwest. It is much easier in something like an already well insulated motor home or RV as you have more roof space and usually more carrying capacity. Living a nomadic lifestyle off grid is all about compromises they can be made easier but in my opinion at this time it is not possible to live in a van without making compromises. We need to stop "sugar coating" AC and heating with solar when it comes to living in a van. You ain't gonna set the thermostat to 72 degrees and forget it like you did in your sticks and bricks in your van for less than you power bill was.
 
abnorm said:
That's gonna be tough...…...He's in Hawaii !!!!!

Okay, okay

If he sends me a ticket I will go out there and fix his systems
 
jimindenver said:
Okay, okay

If he sends me a ticket I will go out there and fix his systems
:p plus room and board and a vehicle to use for running errands?  Of course it will take at least 2 weeks to get it all sorted out!
 
bullfrog said:
How much can the temperature vary in Hawaii?
It can get up to 90 degrees in the summer time at sea level. That is certainly going to be hot enough in a van to want to have some AC. Remember it is humid there.  But the temperature would rarely be so low that I would feel the need to have heat because I like 60 degree weather and it is very easy to dress for it with an extra layer if you feel chilly.
 
maki2 said:
:p plus room and board and a vehicle to use for running errands?  Of course it will take at least 2 weeks to get it all sorted out!
if i had the dough i'd gladly accommodate jim for his inspiration and knowledge!!  i'm just a poor old coot.
 
maki2 said:
It can get up to 90 degrees in the summer time at sea level. That is certainly going to be hot enough in a van to want to have some AC. Remember it is humid there.  But the temperature would rarely be so low that I would feel the need to have heat because I like 60 degree weather and it is very easy to dress for it with an extra layer if you feel chilly.
are you kidding??  90 degrees in the van "not hot enough?"  i tested it without and it gets up to 105 degrees.  even at 85 with 70% humidity, it feels like 100.  why do you think i got the twin turbo (10k btu) ac tactical system?

bullfrog: winter is coming so temps should ease off into 70s daytime and 65ish at night. but summer's a bitch in a hot van without ac.
 
Sorry, I thought people frolicked in the surf and slept in hammocks on the beach while the palms swayed in the sea breeze sipping some fruity drink. After a few of those one would wake up the next morning with sand in the wrong places ready to jump back in the surf. Please so it ain't so! LOL!!!
 
brahmon said:
are you kidding??  90 degrees in the van "not hot enough?"  i tested it without and it gets up to 105 degrees.  even at 85 with 70% humidity, it feels like 100.  why do you think i got the twin turbo (10k btu) ac tactical system?

bullfrog:  winter is coming so temps should ease off into 70s daytime and 65ish at night.  but summer's a bitch in a hot van without ac.
hey Brahomon, reread what I wrote, I said that 90 degrees was hot enough to want to have AC especially with the humidity.
 
sorry my bad maki2

bullfrog. it really is true! lol
 
Top