You're missing a very critical component. That component is a battery balancer circuit. Without it your 48V battery pack will become unbalanced and will lose capacity.

@constructionhacks9293

2 ай бұрын

They can do that, these lead acid batteries are usually not as bad as the lithium’s which must have a bms thanks for your support!

Amesing ❤ I leaning smoothing 😅

Thanks for the vid! Just wondering, is there or should there be a fuse of some sort in this setup? If so where and what amperage? Cheers!

@constructionhacks9293

8 ай бұрын

It’s always good to put some safety measures into the mix so I would recommend it. Thanks for your support!

Mine pop/spark what problem does that indicate?

Great vid. I've been dying to learn more about battery backup systems. We put solar in this summer, and would love to install a battery backup system. Does the AH's on the batteries need to be the same? Does that impact the gauge wire you use to daisy chain them? Are there any downsides to going with a 200AH vs a 100AH?

@constructionhacks9293

5 ай бұрын

Thanks for watching, these are lead acids and you can use different ah but is always better to use the same!

My wife and I were able to retrieve two 48 volt Absolyte Battery Banks but the 2 volt cells did not come with plates for the cells. How do I configure the cables to get the best charging pattern? I have a lot to learn about setting up our off grid property. Thank you for any input!

@constructionhacks9293

7 ай бұрын

I’m not understanding your question could you explain a little more please

@rongray4118

7 ай бұрын

@@constructionhacks9293 The cells + to - position(s) are configured in a row - all positive on one side/all negative on the other side. I would send a photo but copy and paste to the comments section on youtube doesn't seem to work any longer.

@constructionhacks9293

7 ай бұрын

@@rongray4118 I think you can figure it out! Thanks for your support!

Can I use 4 AWG WIRE between the 12 volt batteries?

@constructionhacks9293

5 ай бұрын

Yes! Thanks for your support!

Ur neutral wire is naked isn't a problem??

Good vid bro, any links to these batteries?

@constructionhacks9293

6 ай бұрын

Try Amazon

Are those Univix batteries?

@constructionhacks9293

8 ай бұрын

They are Chinese! Thanks for your support!

You didn't cover the cable sizing. I know you have to use full size for the 12v batteries, whatever amp flow they are rated for. But for the main cables that are now 48v, what is the formula to figure the cable size?

@constructionhacks9293

2 ай бұрын

You should be able to look up the volts times the amp hours and find the watts and size of wire. 48v is smaller than 12v. So multiply volts by amps and you’ll get the watts and should be able to gage the wire size on Google! Thanks for your support!

@azycray4801

2 ай бұрын

@@constructionhacks9293 watts dived by volts = amps so I figured that out. Basically 1 quarter of the 12v amps when in 4S. My question is, are all the cables able to now carry the lower amp rating? Or do the internal cables, before they reach 48v need to stay larger?

@constructionhacks9293

2 ай бұрын

@@azycray4801 amps don’t increase when your series a battery or a panel amps only increase when you parallel a battery or a panel.

@azycray4801

2 ай бұрын

@@constructionhacks9293 I know, they decrease. 12v 200 amp battery in 4s is 48v 50 amp. So the cable size dropped from 3/0 with 12v to 8AWG but I will still over size to limit voltage drop. What I am trying to find out is, can all the cables in the middle, connecting + to - need to be larger before it becomes 48v and can drop down to 8AWG?

@constructionhacks9293

2 ай бұрын

@@azycray4801 that’s a good question. I’ve never heard of bigger cables in the middle. I think it never goes above the amperage that the batteries are rated for so I would say 48 V cables throughout.

Howzit bro is that parallel or series

@constructionhacks9293

Жыл бұрын

Series and parallel, four in series, to make 48v then parallel the two 48v packs together! Thanks for your support ! 😃