Checking the math on 1.65 kwatt off grid solar system

[StuM]

Originally Posted by Adelie

Yes, I should have indicated 12v.

I feel that Ahr works better than Whr because you don't need to do calcs for battery efficiency. Ahr in at 14.2v = approximately Ahr out at 12.5v or whatever.

With a rough ROT of either 1/3 or 4, efficiency losses are neglible compared to the wide range of likely actual insolation.

[Jfjunior]

Originally Posted by sailor4life7777

Hey guys, for the LiFePo4 24v100ah batteries, they allow me to choose 50A, 80A, 100A, 150A, 200A, or 250A BMS. I'm not sure how to choose the amp size for my BMS. I plan to use this to run a freezer and electric cooking appliances for the most part as well as charging my laptop, phone, and some LED lighting. Are there any downsides with going with the bigger 250A BMS? Price is pretty similar, just slightly more expensive for the higher amp BMS.

Thanks in advance for any input guys!

I don't want to create another thread, so I'll ask how things are going. Did it work out as planned? Maybe there are some insiders that you could share so as not to make mistakes. Any information would be helpful. Thanks.