Looking for members knowledgeable in solar system i.e. 12v lithium battery, pure sine wave invert etc

davidhk129

davidhk129

Well-Known Member
I live in a small town where power outage is common. Whenever we have gusty wind, heavy thunderstorm, heavy snow fall we will brace for power outage. It's not fun when it happens in Winter.
I have done a lot of googling about this subject of solar system.

My goal is to have a power backup to run my portable space heaters. I have 3 of them, most of which are 1500 w variety.

I am foregoing the solar panels. ( maybe later.) I am not planning a diy solar system to the entire house.
Instead, I want to get a 12v 100ah lithium battery, a 2000w pure sine wave inverter and a 10a battery charger ( for charging up the lithium battery.)
I understand how to connect the battery with the inverter.
The idea is to be able to plug my portable space heaters to the inverter during power outage. That's all I want to achieve.
Will the above products capable to run all 3 portable space heaters or do I need a "bigger" inverter?

I know absolutely nothing about solar system and electricity was my worst subject at school.
Your input will be most appreciated.
 
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Hi David no mate it will just about run 2 , the maths is 1500 x 3 = 4500 watts but that does not leave any spare I would find a 5000w inverter if you can , you know the best way is a hybrid system of solar panels and wind turbines running a bank of batteries the controller will charge batteries and power your mains in the house
 
Thank you very much.
Able to run 2 space heaters is better having no heat in Winter during power outage.
Perhaps I'll get a 3000w inverter.
 
Hi David I would play safe and get one with power to spare
Could you not run a generator the honda one are very quiet and have sine wave , you can get them to run off propane a 19kg bottle will run a 2000w honda gen for 24 hours
 
Gas generators are way over my budget. They average minimum C$900 each.
Can't find your EU model in Canada.
 
A "12v 100ah lithium battery" is going to do next to nothing for you. That's 1,200 watts for as long as it goes before discharge. If you want actual heat, a fire or a propane generator is the answer, not batteries, sorry. Heat is very energy intensive.
 
RE : A "12v 100ah lithium battery" is going to do next to nothing for you. That's 1,200 watts

I dug out the space heater owner manuals and checked for the power output specs.
It turns out that one uses only 950w. one can be switched from 1500w to 750w, one can be switched from 1500w to 1000w.

Question :
Does that mean a 12v 100ah battery will not be able to run BOTH a 750w and a 950w space heaters at the same time?
 
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davidhk129 said:
RE : A "12v 100ah lithium battery" is going to do next to nothing for you. That's 1,200 watts

I dug out the space heater owner manuals and checked for the power output specs.
It turns out that one uses only 950w. one can be switched from 1500w to 750w, one can be switched from 1500w to 1000w.

Question :
Does that mean a 12v 100ah battery will not be able to run BOTH a 750w and a 950w space heaters at the same time?
Click to expand...
Yes. 950+750=1,700w The maximum that your 100ah battery can supply is 1,200w, and that is the maximum (I am assuming that your battery at 100ah capacity can supply a max of 100 amps). You have a deficit of 1,700-1,200=500w. How Long can your 12v battery supply 100amps? Not all that long, at a guess. I'd be surprised if you got the full hour.
 
Car batteries are no good for what you need they give max amps as a burst like when you start your car
Leisure battery gives amps over a long time so this is why we have a bank of batteries and solar and wind turbines to keep them charged
 
David I was just thinking trucks have a night heater that uses a cup of fuel a night on full heat . Amazon do these as portable unit they can as 12 or 24 volt , these may be the way to go
 
holtneil said:
David I was just thinking trucks have a night heater that uses a cup of fuel a night on full heat . Amazon do these as portable unit they can as 12 or 24 volt , these may be the way to go
Click to expand...
Found this in Amazon.ca:

HCALORY 12V 5KW-8KW Diesel Air Heater All-in-one Single Hole with Remote Control​

$217.12
Affordable. May be an alternative.
Is it safe using indoors? No danger of gas poisoning?
Thank you.
 
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My mate used one I think it has a little exhaust that will need to go to the out side my mate used to aim the pipe up the chimney , they pump out a lot heat so does not need to be on all the time
 
Any heater that burns fuel, gas or diesel or kerosene (or wood or coal), must have the exhaust vented out of the house. Otherwise you will suffocate.

Solar and wind power systems cannot be relied on in winter, because there may be no sunshine or wind for several days (or weeks). Anyway, you would need really enormous batteries for even a few days of power. If you are "off grid", you need a gas or oil system of some kind with a storage tank. (Or, of course, install a wood or coal fire.)

I advise you to study up on the basics of electricity. This is fundamental to life in the modern age. Start with school textbooks, or there are a multitude of educational videos on Youtube.
 
I've ran kerosene and propane heaters indoors many times just have to either open a window or set up a simple exhaust, either way you can only run them for a few minutes at a time. Not ideal but better than freezing your nuts off lol
 
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