Lithium Cost for 21RSBB

[Pikesfolly]

Want to boondock in my 21 TT but man, the battery is just the start. Here's what I've discovered so far... wow.

Chin 200AH 12.8v - with low temp protection, 200ah bms, bluetooth		$656.00​
BUT WAIT THERE'S MORE! :
Charger for lithium battery (1)	$110.00​
Converter replacement for my RV coverter - to charge lithium (1)	$210.00​
New battery box, minimum cost... (2)	$50.00​
Renegy solar panel kit, 200 watt, portable, with PWM controller (3)	$319.00​
cables, misc	$100.00​	$789.00​
		$1,445.00​
More options
Renogy DC to DC - to charge lithium from F150, see item 1	$110.00​
1000W inverter	$180.00​
Wire inverter to trailer system (4)	$$$$$
(1) suppossedly necessary to prevent cells "unbalancing"
(2) or buy 2 100AH but either way requires new batt box
or mount in storage
(3) estimated to replace 70-80 AH per day
(4) yea, uh, I'm not doing this, not qualified. This will be at least $500

 

[fluffywhitedogs]

Are you sure your converter won’t do? My 23 21RBSS has this…

 

[cipwood]

With the WF-8955 the year of the trailer makes the diff. 2021 and before some were lithium compatible some were not. My 2021 25lrss was not and had to be upgraded.

 

[fluffywhitedogs]

With the WF-8955 the year of the trailer makes the diff. 2021 and before some were lithium compatible some were not. My 2021 25lrss was not and had to be upgraded.

Wow, I would have figured the model # would have changed if the specs did! How confusing!

 

[cipwood]

You're dealing with the RV industry, nothing makes sense.
Imagine my surprise that mine would not support a Lifpo4 battery.

 

[cipwood]

I went full solar, roof mount 700 watt Array, 45 amp MPPT controller, 300 amp hour lifepo4, 3000 watt pure sign inverter, bla bla.

Puts out 35+ amps to the controller.

Way too much $$$, but I still love it and would do it again.

I can run my A/C for over an hour and still have 50% battery left without sun.