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Showing results 1 to 11 of 11
Search took 0.00 seconds. Search: Posts Made By: OceanSeaSpray
Forum: Electrical: Batteries, Generators & Solar 22-03-2018, 13:36
Replies: 127
Views: 25,101
Posted By OceanSeaSpray
Re: How many Amps Hours do you use a day?

Correct. If you artificially force the load or the source current to be zero by switching off, then all current must go through the battery shunt and you can see all you are consuming or producing....
Forum: Electrical: Batteries, Generators & Solar 22-03-2018, 12:48
Replies: 127
Views: 25,101
Posted By OceanSeaSpray
Re: How many Amps Hours do you use a day?

Of course not. Read my previous post carefully. You need to measure two different currents and then you can deduct the third one and know how much you are: 1/ producing 2/ consuming and 3/storing.
...
Forum: Electrical: Batteries, Generators & Solar 22-03-2018, 03:53
Replies: 127
Views: 25,101
Posted By OceanSeaSpray
Re: How many Amps Hours do you use a day?

You are producing 30A. You are consuming 10A. You are charging 30-10=20A. It is the difference. You can swap the terms around to suit the two quantities you are measuring of course:

Charge =...
Forum: Electrical: Batteries, Generators & Solar 22-03-2018, 01:56
Replies: 127
Views: 25,101
Posted By OceanSeaSpray
Re: How many Amps Hours do you use a day?

Yes, you do. You need one to measure how much you produce and one to measure how much you consume. The difference between the two is what comes from or goes into the battery. Only then you can have a...
Forum: Electrical: Batteries, Generators & Solar 22-03-2018, 01:48
Replies: 127
Views: 25,101
Posted By OceanSeaSpray
Re: How many Amps Hours do you use a day?

None of the numbers are wrong and you are correct with your figures above. You need to be clear about what you are measuring: you are measuring the load on the battery only, not the total load on...
Forum: Electrical: Batteries, Generators & Solar 20-03-2018, 18:13
Replies: 127
Views: 25,101
Posted By OceanSeaSpray
Re: How many Amps Hours do you use a day?

Note that unless you have TWO shunts and you separate loads from charging sources, you are not measuring everything (which was my question to Erik earlier). All power does not go through the battery,...
Forum: Electrical: Batteries, Generators & Solar 20-03-2018, 13:15
Replies: 127
Views: 25,101
Posted By OceanSeaSpray
Re: How many Amps Hours do you use a day?

With refrigeration, getting rid of the heat from the radiator is almost everything when it comes to efficiency. I have seen many systems that were energy black holes and still performed poorly just...
Forum: Electrical: Batteries, Generators & Solar 20-03-2018, 13:10
Replies: 127
Views: 25,101
Posted By OceanSeaSpray
Re: How many Amps Hours do you use a day?

It depends what you call "best". A data logger writing to a SD card or something like that could collect what you want for a very long time.

Note that unless you have TWO shunts and you...
Forum: Electrical: Batteries, Generators & Solar 19-03-2018, 22:45
Replies: 127
Views: 25,101
Posted By OceanSeaSpray
Re: How many Amps Hours do you use a day?

I have had a far bit to do with helping out people building lithium battery banks and the question of their daily consumption always comes at the forefront when deciding how much capacity is needed....
Forum: Electrical: Batteries, Generators & Solar 19-03-2018, 22:30
Replies: 127
Views: 25,101
Posted By OceanSeaSpray
Re: How many Amps Hours do you use a day?

I suspect you are not metering the power used not going in and out of the battery here.
Forum: Electrical: Batteries, Generators & Solar 19-03-2018, 05:34
Replies: 127
Views: 25,101
Posted By OceanSeaSpray
Re: How many Amps Hours do you use a day?

Get a book (https://www.amazon.com/Glenans-Manual-Sailing-Peter-Davison/dp/0715300164) and study it or go to a sailing school. It is helpful and it beats being a liability on the water.
Showing results 1 to 11 of 11

 
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