ericfx1984
Solar Enthusiast
- Joined
- Oct 10, 2021
- Messages
- 761
So I've got a bit of an issue... I need to start bringing my new system online...
Need to build the new battery... I need to do all the things... Lol. I need to test the inverter.
Here's the problem... I don't have a place to put the new solar panels yet
However currently I have one system that is 12 volts... With 22 kW hours of lithium iron phosphate batteries
I'm running a total of five MPPT solar charge controllers with a total of 3,400 Watts of solar panels spread between them with a 3000 low frequency inverter... I rarely see more than 1,800 Watts coming in through the solar charge controllers to the battery.. a lot of that has to do with the fact that it's been very hot and the panels are hot which creates a significant drop in efficiency
What I'm considering doing is this
I have nine 250 w panels setup on my shed... What I'm thinking I might do is disconnect those from my 12 volt systemc and connect them to my 48 volt all in one.
At that point I could build my 280ah 16s battery and use the 48 volt setup with the 9 250w panels to charge it
The problem is I am relying on those panels to keep the 12 volt system functional
But I'm thinking perhaps I could connect the AC output of the 48 volt system to the AC input of the 12 volt system
The other option that I've considered is that I could offload some of my loads to the 48 volt system... And then little by little bring the 48 volt system to full capacity. (which would consist of a pair of 16S batteries One would be built with 280 amp hour cells the other one with 304 amp hour cells... And 10,000 Watts of solar panels).
Basically I need to start building this...
Need to build the new battery... I need to do all the things... Lol. I need to test the inverter.
Here's the problem... I don't have a place to put the new solar panels yet
However currently I have one system that is 12 volts... With 22 kW hours of lithium iron phosphate batteries
I'm running a total of five MPPT solar charge controllers with a total of 3,400 Watts of solar panels spread between them with a 3000 low frequency inverter... I rarely see more than 1,800 Watts coming in through the solar charge controllers to the battery.. a lot of that has to do with the fact that it's been very hot and the panels are hot which creates a significant drop in efficiency
What I'm considering doing is this
I have nine 250 w panels setup on my shed... What I'm thinking I might do is disconnect those from my 12 volt systemc and connect them to my 48 volt all in one.
At that point I could build my 280ah 16s battery and use the 48 volt setup with the 9 250w panels to charge it
The problem is I am relying on those panels to keep the 12 volt system functional
But I'm thinking perhaps I could connect the AC output of the 48 volt system to the AC input of the 12 volt system
The other option that I've considered is that I could offload some of my loads to the 48 volt system... And then little by little bring the 48 volt system to full capacity. (which would consist of a pair of 16S batteries One would be built with 280 amp hour cells the other one with 304 amp hour cells... And 10,000 Watts of solar panels).
Basically I need to start building this...