Quote:
Originally Posted by quantum
Thanks, I a bit misled now as below was my response much earlier in the thread and I was told I was incorrect with my math?
post #15----Thanks...Good feedback. Where as I have 2-12v at 100 I believe I have 240AH. Being a year old I guess I would be in good shape for 1/2 the time. That is adequate for our needs. Also if the fridge only runs on occasion, we watch i tv or use our computers we should be fine for a good night sleep.
I want to ask which one is correct my first one stating how you did 12v x 100 Amp =1200 x 2 = 2400 ??
I do appreciate your seeing this so I can figure how to do the correct math. LOL
Just a note and I want to thank you for the estimated fridge usage. I will be driving south and dry camping ( harvest Hosts locations) for about 8 to 10hours each night of the 3 day drive. So while traveling batteries will be charges, fridge will be ok as well as my heat. Those are my most important 2 concerns. If the generator only starts one or twice, I think I'll be fine. Your thoughts/
Also I want to thank everyone's feedback. It has surely removed many of my concerns
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The problem is you are confusing watt-hrs with amp-hours: Not the same thing. Numbers mean nothing without units.
If you have (2) 12 volt batteries rated at 100 AH each, you have a total of 200 AHs stored energy at 12 volts. But since only half of that is usable, you have 100 AHs of usable energy at 12 volts.
Watt-hours is a measured of the stored energy independent of the applied voltage.
Your same 100 AH battery at 12 volts has 12 volts * 100 AH = 1200 Watt-Hours of stored energy. The watt is a product of voltage times current; 1 volt times 1 amp = 1 watt.
Also, if you don't quote the person you are directing a response to, nobody knows who you are talking to.
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