Sun Trekker

[Campin]

Amp reading fluctuates, this is the latest.

 

[Ampster]

Amp reading fluctuates, this is the latest.

Yes, that is the classic current taper.

 

[Campin]

I chose to ‘passive’ bottom balance cells for a month, it may have stabilized cells. ...we’ll see.

 

[Ampster]

I chose to ‘passive’ bottom balance cells for a month, it may have stabilized cells. ...we’ll see

I have never seen anything that has changed a cell's capacity after it leaves the manufacturer, except calendar ageing and cycles, both of which only lower capacity. Hopefully yours were well matched.

 

[Campin]

Thnx Ampster, I value your input! And I look forward to battery installation, it’s been a long haul.

 

[Campin]

Battery rested overnight, now to breakdown and transfer to RV. But first finish Mr. heater installation in order to work on solar system at night.

 

[Campin]

Battery in, space is at a premium for the 640W/280AH solar system in a small cubicle but doable! It’ll power a 120 sf Jayco travel trailer (no generator) in the boondocks. ...next complete system wiring and test

 

[Campin]

I’ll finish wiring solar system this week, lithium battery connected and charged (90% SOC), test, boom or bust ; )

 

[Campin]

The solar install is complete, ready to test! The 640W/280AH system occupies a 2.5' x 3' space.

 

[Campin]

Battery monitoring (Bluetooth) showing solar system at idle. I need to taylor the app for my system.

 

[Campin]

Solar has signs of life but I need to learn the battery monitoring app.

LOL

 

[Campin]

Solar online, adjusted the SCC parameters.

 

[Campin]

I’ll turn-on the inverter next. And because the system is somewhat oversized (inverter, converter, SCC, wire), l haven’t noticed any heat dissipation. Of course I’m testing and not in the real world.

 

[Campin]

All AC/DC systems are a go. Battery is strong and solar charges quickly.

 

[acdoctor]

Why are you inverting at 50 hz I thought you were in the US?

 

[Campin]

Thnx, I need to check the inverter setting!

 

[Campin]

I set Outback charge parameters to about 90%. A snapshot of individual cell voltages in float mode; 3.347, 3.347, 3.346, 3.347, 3.345, 3.345, 3.346 and 3.346.
Also the inverter now reads 60 HZ, thnx acdoctor.

Edit- the cell voltages posted above are at a state of rest after charging. The numbers vary more in float mode.

 

[Campin]

Preparing for launch...check electrical, plumbing, load cargo. On the road, I’ll start a new thread detailing solar performance.

 

[Campin]

Solar by night, testing the 24V battery.

 

[Campin]

Nights are below freezing so I crank the heat in the morning to thaw out the lithium battery (avoid charging below 32 F). But when traveling, it’ll be room temperatures.

I read 26.8V = 90% capacity…I’ll dial up the SCC.