Enclosed trailer solar system

[the prodigal son]

I’m needing to replace my 48 volt battery bank that is stored in an enclosed trailer where the solar panels are mounted. In your opinion what would be the best battery bank should I use in your opinion? I live in south East Tennessee. Thanks for your help!!

 

[Deleted member 4428]

What battery do you have now?
What A/H capacity?
What inverter?
What Charge Controller?
How is the system used?

 

[the prodigal son]

8/6 volt lead acid batteries at 235 amp hrs
Magna sine inverter
Outback flex 80 charge controller
It’s used as a back up but I would like to use it a lot more when I the new bank.

 

[Deleted member 4428]

Check out these. https://www.alibaba.com/product-det...tml?spm=a2700.icbuShop.66095.1.6cd7b917HA5Xn0

This vendor and the sales rep Amy, have been fully vetted by many members here. In fact members of this forum have bought over 5000 cells from Xuba since 15 Jan 2020.
Be sure and tell Amy that you are with this forum to get free buss-bars and fasteners.

Be sure your current equipment can be re-programmed to the specs of the battery.
You will need a Battery Management System (BMS) as well. Chargery is a brand that is well used by this forum.

Virtually every question you may have is answered in this thread: https://diysolarforum.com/threads/xuba-electronics-deal-280ah-lifepo4-cells-purchase-review.3850/

Here is the original post that started it all. Thanks Michael. https://diysolarforum.com/threads/j...1260-00-usd-delivered-grade-a-to-canada.3387/

 

[the prodigal son]

What the heat in the trailer?

 

[Deleted member 4428]

Heat is the enemy of all batteries. Other than giving the cells free air there's not much you can do. You could insulate the trailer, install a Mini Split A/C system and set the thermostat to 80F. If you were to partition the trailer into a well insulated, small living space where humans and the batteries could live you would use much less power.

What does your solar array consist of?

 

[the prodigal son]

9 200plus watts. I don't remember the exact watts per panel

 

[the prodigal son]

Check out these. https://www.alibaba.com/product-det...tml?spm=a2700.icbuShop.66095.1.6cd7b917HA5Xn0

This vendor and the sales rep Amy, have been fully vetted by many members here. In fact members of this forum have bought over 5000 cells from Xuba since 15 Jan 2020.
Be sure and tell Amy that you are with this forum to get free buss-bars and fasteners.

Be sure your current equipment can be re-programmed to the specs of the battery.
You will need a Battery Management System (BMS) as well. Chargery is a brand that is well used by this forum.

Virtually every question you may have is answered in this thread: https://diysolarforum.com/threads/xuba-electronics-deal-280ah-lifepo4-cells-purchase-review.3850/

Here is the original post that started it all. Thanks Michael. https://diysolarforum.com/threads/j...1260-00-usd-delivered-grade-a-to-canada.3387/

I contacted Amy and she has given me a quote for 16 cells. Do you have a diagram of how they should be put together and how many amp hrs will I have when this 48 volt bank is finished?

 

[the prodigal son]

I contacted Amy and she has given me a quote for 16 cells. Do you have a diagram of how they should be put together and how many amp hrs will I have when this 48 volt bank is finished?

I think I answered one of my questions. but I still need to know the total amp hrs for 16 of these cells built for a 48 volt bank. I really appreciate the help. Most of this is foreign to me. Would the series diagram be the best?

 

[John Frum]

I think I answered one of my questions. but I still need to know the total amp hrs for 16 of these cells built for a 48 volt bank. I really appreciate the help. Most of this is foreign to me. Would the series diagram be the best?

280 amp hours @ 51.2 nominal volts = 14336 watt hours = 11468.8 usable watt hours @ 80 percent depth of discharge.

 

[the prodigal son]

280 amp hours @ 51.2 nominal volts = 14336 watt hours = 11468.8 usable watt hours @ 80 percent depth of discharge.

Thanks is that a decent amount of storage for just a few led lights and such?

 

[the prodigal son]

Thanks is that a decent amount of storage for just a few led lights and such?

 

[John Frum]

Thanks is that a decent amount of storage for just a few led lights and such?

Yes, I wonder why you had a 48 volt system for a few led lights and such?

 

[the prodigal son]

Yes, I wonder why you had a 48 volt system for a few led lights and such?

Could you run a house fridge on that?

 

[John Frum]

Could you run a house fridge on that?

Purchase one of these https://www.amazon.ca/KINCREA-Electricity-Monitor-Voltage-Digital/dp/B07Q121ZQY
Put it inline with your fridge for a week.
Divide the resulting watt hour number by 7 to get average daily watt hours.
Then divide that by .85 to factor for the inverter conversion losses.
And you will have your answer.

 

[the prodigal son]

Purchase one of these https://www.amazon.ca/KINCREA-Electricity-Monitor-Voltage-Digital/dp/B07Q121ZQY
Put it inline with your fridge for a week.
Divide the resulting watt hour number by 7 to get average daily watt hours.
Then divide that by .85 to factor for the inverter conversion losses.
And you will have your answer.

Thanks a lot for the help. I really appreciate it!!

 

[the prodigal son]

Thanks a lot for the help. I really appreciate it!!

Am I correct in saying that these cells should be run in series like that second photo?

 

[JoeHam]

They are both in series. The two pictures just show how to arrange the cells in a rectangular or square-ish shape.

I’m using the square shape since it fits my battery box space better and it puts the connections for the terminals close together so I can keep the cable lengths equal in my setup.

 

[the prodigal son]

Check out these. https://www.alibaba.com/product-det...tml?spm=a2700.icbuShop.66095.1.6cd7b917HA5Xn0

This vendor and the sales rep Amy, have been fully vetted by many members here. In fact members of this forum have bought over 5000 cells from Xuba since 15 Jan 2020.
Be sure and tell Amy that you are with this forum to get free buss-bars and fasteners.

Be sure your current equipment can be re-programmed to the specs of the battery.
You will need a Battery Management System (BMS) as well. Chargery is a brand that is well used by this forum.

Virtually every question you may have is answered in this thread: https://diysolarforum.com/threads/xuba-electronics-deal-280ah-lifepo4-cells-purchase-review.3850/

Here is the original post that started it all. Thanks Michael. https://diysolarforum.com/threads/j...1260-00-usd-delivered-grade-a-to-canada.3387/

Can you give me a link for a good BMS?

 

[Deleted member 4428]

Can you give me a link for a good BMS?

Sorry, I cant because I haven't made up my mind yet as to what is a good BMS. I am leaning towards Chargery.