Powering Bertha

[Cammalu]

Yes that would be great. I'm having to do a quick turn around As I have to be in Nashville on the 12th


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[bLEEp]

Love me some Nashville


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[GotSmart]

She has an appointment for knee surgery.  

It is a bad idea to try to have a mixed battery bank.  You might be able to sell them at RTR.

[frater secessus]

So I think I am going for (2) Trojan 6v 420 AH Flooded. 

Safe choice, but let's make sure we're on the same page.

The XLDs are listed as 210Ah.  If you have them series-parallel you have 12v and 420Ah.  That may be more than your panels can keep up with.  The normal minimum ratio of panel watts to bank Ah is 1:1, with 2:1 being preferable if it's the only charging source.  Yours is 0.95:1.  See below for setpoint recommendations that may help.

The Trojans are 210Ah;  the voltage is doubled with you wire them in series, not the Ah.  [oops, just realized you are talking about the big 16 format]

If it were me I'd try to fix the XLD bank before laying out any more cash. 

1. Open them up and water with distilled as needed.  I suspect they are low.
   
2. use the controller monitor to crank up the Absorption voltage (Vabs) to 14.7v or 14.8v, whatever the manufacturer recommends.  I suspect Vabs is low;  the controllers are generally preset to AGM setpoints like Vabs 14.2v or something to avoid cooking batteries when people don't read the manuals.   I dont' know if the Commander lets you adjust Absorption duration; if it does then crank that up to 120-180 minutes.
   
3. watch and hope
   

If you get lucky they have life left in them and you can nurse them along.

[GotSmart]

Now that you are serious about your batteries ~~~  

This is what I have. Fullriver DC224 AGM.  It is what I was trying to get for you.  7 year warranty for about $250 each.  You get what you pay for. 

https://www.wholesalesolar.com/9902246/f...ah-battery

That is just one supplier.  You might find someone local that has them.  

I bought mine used, and three years later, I seldom go below 13V.  Usually 13.6 with my two panals, and pwm controller.They have hit 14.4 when using the alternator on long runs. 

[bLEEp]

Far out John! Thanks buddy


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[GotSmart]

They will fit directly into your battery case. Just be sure to get the right post/attachment set up.

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