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Mako Kupo

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Posted: 07/01/18 07:09am Link  |  Quote  |  Print  |  Notify Moderator

hey everyone! it was a cold winter, but I made it through with minimal issues. my yeti lithium 1400 + 550w 12v renogy panels more than covered what I needed through the season. however, it is now time for my permanent install. I did a TON of research and reading over the winter, and I still remember most of it but some stuff wasn't super clear to me.

to start, this will be my basic specs. currently 550w 12v renogy solar panels, upping to 800w in near future. 800w is where it will cap out for this motorhome, unless I want to start covering the sides of it with panels. I bought the tp of the line converter over the summer, but found someone who desperately, desperately(yes, two desperatelys) needed it. I have them a deal on it, since I was more than taken care of power-wise. I am very much a pay it forward person, and help people whenever I can.


that said, I need to know what I need. I have my panels, with the wires coming through the roof cleanly, so that is all done for now. i need a minimum of 600AH(12v) lithium, and the charge controller/equipment to support that. so, moving forward, know that I only have panels for my final build. I need everything else.

I was thinking battle born lithium batteries. they use cylindrical 26650 cells, with a good warranty. price is about $1,000 per 100ah. if you get six of the batteries, its $6,000 but you get the charge controller, inverter, battery monitor, and inverter. there is all sorts of safety built into the batteries. I consider building my own battery bank from lithium cells, but decided I want to live[emoticon].

I would get this

https://www.amazon.com/Battle-Born-Batteries-Journey-Lithium/dp/B07CTYZ38J/ref=sr_1_5?ie=UTF8&qid=1530450271&sr=8-5&keywords=Battle+Born+Batteries

and this

https://www.amazon.com/Progressive-Dynamics-PD4590-Inteli-Power-Distribution/dp/B002OR41YS/ref=sr_1_2?ie=UTF8&qid=1530450380&sr=8-2&keywords=progressive+dynamics+50+amp

I'm hoping thats everything I would need. I already have 6x 120v circuits installed under my insulation, and 12x 12v circuits. its a ton of circuits. my dad taught me - if you have room to dedicate breakers, do it(basically).

will all of these things work together? I think the inverter the battery bank comes with will be not used, right? the PD converter does everything from taking a charge from the solar controller, taking a charge from the alternator, powering both 12v and 120v, and can charge batteries via shore power. there are a lot of parts here, and I just want to make sure I'm not building a fire pit, but a camper instead.

Lwiddis

Rincon Parkway, Ventura, CA

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Posted: 07/01/18 07:49am Link  |  Quote  |  Print  |  Notify Moderator

Six thousand dollars for TT’s batteries is out of my budget.


2015 Winnebago 2101DS TT & Tahoe LTZ, 300 watts WindyNation solar-parallel & MPPT, Trojan T-125s. TALL flagpole for US flag. Prefer USFS, COE, BLM, NPS, TVA, USF&WS, state & county camps. Bicyclist! 14 year Army vet - 11B40 then 11A - old MOS 1542 & 1560.


pianotuna

Regina, SK, Canada

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Posted: 07/01/18 08:32am Link  |  Quote  |  Print  |  Notify Moderator

Hi,

With that sort of investment for batteries I'd be talking to Battle Born to ask what charger they recommend.

I would encourage you to use 24 volts rather than 12 for the battery bank voltage. I'd jump right to 48 volts if I were building such a system.

Here is a link to the batteries:

https://www.amazon.com/Battle-Born-Batt........71&sr=8-5&keywords=Battle+Born+Batteries

* This post was edited 07/01/18 08:41am by pianotuna *


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

dave17352

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Posted: 07/01/18 08:40am Link  |  Quote  |  Print  |  Notify Moderator

I would think they are selling what they think are appropriate


2005 Forrest River Cardinal 29rkle FW
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Renogy 200 Watt solar

Mako Kupo

CT

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Posted: 07/01/18 09:00am Link  |  Quote  |  Print  |  Notify Moderator

dave17352 wrote:

I would think they are selling what they think are appropriate


thats correct, its supposed to be a swap out level install. plug and play essentially. check the link I sent its all there(other guy)

Mako Kupo

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Posted: 07/01/18 09:20am Link  |  Quote  |  Print  |  Notify Moderator

I guess to narrow it down, is that PD converter compatible with that lithium charger. I guess I can call battle born tomorrow if nobody knows, heck ill call either way just to be safe.1

2oldman

Salton Sea

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Posted: 07/01/18 09:43am Link  |  Quote  |  Print  |  Notify Moderator

Mako Kupo wrote:

I guess to narrow it down, is that PD converter compatible with that lithium charger.
I doubt it, if by compatible you mean will they work together. Different voltages. Li's typically do not Absorb.

I would second the suggestion on going to 24 or 48 volts.

* This post was edited 07/01/18 10:10am by 2oldman *

MrWizard

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Posted: 07/01/18 09:53am Link  |  Quote  |  Print  |  Notify Moderator

I would take a close look at the FireFly ? Carbon foam batteries
Supposedly same power and life , for less $$, but they weigh more than lithium
Also are a drop in replacement

I think it was PT that brought them to my attention last year


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pianotuna

Regina, SK, Canada

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Posted: 07/01/18 11:49am Link  |  Quote  |  Print  |  Notify Moderator

I'd also look at outback carbon foam batteries.

I believe firefly now makes G31 and an L15 jar. The L15 is available as a 2 volt @ 900 amp-hours and a 4 volt @ 450 amp-hours.

G 31 is $486 and 100 amp-hours or $2916 for 600 amp-hours.

L16 is $659. Or $3954 for 900 amp-hours


https://www.bruceschwab.com/wp-content/u........ads/sites/86/2018/04/Firefly-handout.pdf


Higher voltage is a goal as well.

The link the OP gave does target a "package" that Battle Born sells so the PD converter is recommended by them.

I don't see 800 watts of solar as massive.

* This post was edited 07/01/18 12:20pm by pianotuna *

2oldman

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Posted: 07/01/18 02:33pm Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

I don't see 800 watts of solar as massive.
I have 835w which I also do not consider massive. I consider it adequate.

Massive is when you cover your roof, hang them over the side and have a utility trailer full.

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