I realize there are many variables to consider and my understanding of electrons, coulomes and , joules is basic ; so, calculations are complicated to say the least.Hello; i was planning on adding 2@ 300 watt solor panels ($1400 +-). Is there a recommended brand that is good? Also, will 900 watts be able to charge a 1400 ah battery bank?
True12 amps ×120 v = 1,400 watts
Not quite sure what you mean. Do you have four 6V batteries connected in series/parallel for 12V? What is the AH of each individual 6V battery?I have a 1,400 ah vmax 6 v parallel/ series 12 v bank that I understand this translates to a roughly 700 ah.
Also, I understand this means I can run 1 amp for 700 h.
In theory, yes. However the Ah you can get out of a lead acid battery goes down at higher loads. Not an issue at 10A on a 700Ah battery. But at 100A, the battery will be dead long before 7 hours.Does this mean I can run 10 amps fo 70 hours?
You need to know what percentage of time the freezer is running. Multiply 12A by that %.Furthermore, how is it calculated for a 12 amp intermittent current of a new little deep freeze that dosent seem to run a lot.?
1400AH/12A = 116.7 Hours at 12 volts, somewhere less than 11.67 hours at 120 volts with inverter losses.how long 12 amps can be sustained with a 1,400 AH battery bank?
However, Assuming a 12 Volt system, 12 225AH 6 volt batteries would be 1350AH of which 50% is generally considered usable.I have 12@ 6v 225 AH in parrall series configuration
I bought the 45kits years ago. Alot of disappointed owers had problems with their charge controller if you can call it that. Get yourself another charge controller. I still have mine. Both are used for voltage display mostly and the different voltage outputs at time.I am going to end this post with a couple dumb questions and then dive in to how a real photovoltaic cell is made.
Anyway, I have 3@ 100 watt harbor freight kits that will be moved to the back yard.
Now, I have those 3@ charge controllers that seem to protect the battery bank. Would it be possible to load the existing 300 watts to one of these controllers and utilize one or 2 of these controllers with new panels? ( it seems to be common knowledge that these harbor freight panels will never produce 300 watts).
First, Why is it that my controllers show that charging is happening; yet, when I put a DC multi meter on the panel output It won't read any Volts?
Secondly, the manufacturing connectors and connections will most likely be incompatible; so , before o start cutting and splicing wires is it safe to say that as long as I keep the polarity right it is possible to tie different systems together?
Finally, right now I have a few SSW locations for panels ;also, I understand DC likes big braided copper ; however, is it not good to just run 3 home runs of Romax out to these locations and keep the wiring simple?
Thanks everyone for you time and information.