chrisski
Solar Boondocker
- Joined
- Aug 14, 2020
- Messages
- 5,198
This is an upgrade to 2.2 kw and 24 volt lithiums from my 1.3 kw V build with 4 GC2H FLA Batteries discussed here:
Batteries
I have two Batteries, 24 volts with 8 Eve 280 cells. The BMS is Overkill 100 amps. I fused each battery with Class T fuses. This is the sketch of what it should look like when sittign in a 2' X 2' Battery tray:
And this is the side view and also a View of the Busbars and Class T fuses. Those busbars and fuses are bigger than I thought.
BMS: Overkill 100 amp 8S 24 V
Completed sitting on top as pictured above. I had some worries about cold cutoff and based off another thread, I got decided on these numbers, and tracked temps for a night:
These January temps show me I ought to install some sort of heating, or not use it, but I have some time to think about this.
AC to DC COnverter
Off Will's recommendation, I got a, AIMS 120 VAC to 12/24 VDC converter. I liked the Gel profile better than the lithium and have that set. I finished installing it today and powered it up to test it, and it charged the battery slightly over its rated 35 amps at 36.9 amps:
24 Volt to 12 Volt DC to DC converter
I did away with the 12 volt battery altogether and because I needed 50 amps for trailer jacks, I put in an Orion 24 volt to 12 volt 70 amp DC to DC converter and fused the 24 volt input at 50 amps and the 12 volt output at 80 amps with ANL fuses:
Inverter
I installed a SAMLEX 3000-watt inverter and used a 30-ohm 25-watt resistor to go in line to prevent sparking when I first hooked it up:
I still need to hardwire the output to get the full 25 amps. Right now what I have is an extension cord from the GFCI outlet to shore power which limits me to 16 amps continuous. All parts for hardwiring will be in by next week.
Solar Panels:
I started the upgrade with 2.2 kw panel total, with 900 watts of that portable set up on the ground, and 1300 watts on the roof:
I show data for about four days. 11 Jan I did not use much power and did not put out the portable panels. From the 9-11 Jan the RV was parked in a non-ideal orientation North South, and on the 12 Jan, was parked in an ideal East West so the roof panels faced south. Unfortunately, there was a thin, light scud layer of clouds you don't even notice unless you have solar, and I lost about 25% production:
My RV Build: 600 watt Roof Mounted Panels and 400 watt ground mounted Panels
I'm getting close to turning on the switch for my 12 volt 1000 watt with 600 watts roof mounted and 400 watts ground mounted PV build. This is the 400 watt portion. It's: four 100 watt Lion Energy portable panels hooked in parallel, The panels are Hooked with Anderson Powerpoles a...
diysolarforum.com
Batteries
I have two Batteries, 24 volts with 8 Eve 280 cells. The BMS is Overkill 100 amps. I fused each battery with Class T fuses. This is the sketch of what it should look like when sittign in a 2' X 2' Battery tray:
And this is the side view and also a View of the Busbars and Class T fuses. Those busbars and fuses are bigger than I thought.
BMS: Overkill 100 amp 8S 24 V
Completed sitting on top as pictured above. I had some worries about cold cutoff and based off another thread, I got decided on these numbers, and tracked temps for a night:
These January temps show me I ought to install some sort of heating, or not use it, but I have some time to think about this.
AC to DC COnverter
Off Will's recommendation, I got a, AIMS 120 VAC to 12/24 VDC converter. I liked the Gel profile better than the lithium and have that set. I finished installing it today and powered it up to test it, and it charged the battery slightly over its rated 35 amps at 36.9 amps:
24 Volt to 12 Volt DC to DC converter
I did away with the 12 volt battery altogether and because I needed 50 amps for trailer jacks, I put in an Orion 24 volt to 12 volt 70 amp DC to DC converter and fused the 24 volt input at 50 amps and the 12 volt output at 80 amps with ANL fuses:
Inverter
I installed a SAMLEX 3000-watt inverter and used a 30-ohm 25-watt resistor to go in line to prevent sparking when I first hooked it up:
I still need to hardwire the output to get the full 25 amps. Right now what I have is an extension cord from the GFCI outlet to shore power which limits me to 16 amps continuous. All parts for hardwiring will be in by next week.
Solar Panels:
I started the upgrade with 2.2 kw panel total, with 900 watts of that portable set up on the ground, and 1300 watts on the roof:
I show data for about four days. 11 Jan I did not use much power and did not put out the portable panels. From the 9-11 Jan the RV was parked in a non-ideal orientation North South, and on the 12 Jan, was parked in an ideal East West so the roof panels faced south. Unfortunately, there was a thin, light scud layer of clouds you don't even notice unless you have solar, and I lost about 25% production:
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