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Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: ohsonew on March 04, 2018, 06:58:43 am

Title: What batteries?
Post by: ohsonew on March 04, 2018, 06:58:43 am
I am needing to replace my house batteries. Any recommendations on brands and price from the collective genius?
Title: Re: What batteries?
Post by: Chuck & Jeannie on March 04, 2018, 07:50:35 am
https://www.oreillyauto.com/detail/super-start-fleet---heavy-duty-5000/marine-parts---accessories-16900/deep-cycle---marine-batteries-17354/battery/agm8d/4742645
Title: Re: What batteries?
Post by: ohsonew on March 04, 2018, 08:00:25 am
Thanks for the quick response. I will check them out. I get a discount from the company I work for with O'Rielly ^.^d

Larry
Title: Re: What batteries?
Post by: joeszeidel on March 04, 2018, 08:29:06 am
I plan to buy the same batteries Chuck showed. Price I was quoted $409.00 ea.
Title: Re: What batteries?
Post by: ohsonew on March 04, 2018, 09:20:21 am
Thanks Joe.

Larry
Title: Re: What batteries?
Post by: bbeane on March 04, 2018, 10:05:16 am
Had mine 3 years and still works mg great.
Title: Re: What batteries?
Post by: Tim on March 04, 2018, 10:08:55 am
Four of these lithium batteries would work. You would need four of them and they cost $600 each. No BMS is needed.

http://voltronixusa.com/wp/wp-content/uploads/Voltronix-400Ah-Battery-Cell.pdf
Title: Re: What batteries?
Post by: Chuck & Jeannie on March 04, 2018, 10:24:35 am
If your local O'Reilly store is situated so you can pull your coach up near the entrance, you can usually get the parts store guys to swap out the batteries for you.  Depending on where your batteries are located (in the coach) and how "fit" you are, this can be a valuable back saving perk.

My recommendation: use fresh military style battery connectors on your nice new batteries, clean up the cable ends, spray with Corrosion-X.

Amazon.com: Pico 0810PT Military Style Top Post Battery Terminal 1 Set... (https://www.amazon.com/dp/B001QRTZR0/ref=psdc_15720011_t1_B01HOUGRI2)

Amazon.com: Corrosion-X 90101 6oz Aerosol: Sports & Outdoors (https://www.amazon.com/Corrosion-X-90101-6oz-Aerosol/dp/B0009E3T6E/ref=pd_lpo_vtph_200_lp_t_3?_encoding=UTF8&psc=1&refRID=910CD2WRFXN19FCWDBAR)
Title: Re: What batteries?
Post by: Roger & Susan in Home2 on March 04, 2018, 12:25:02 pm
If you want more capacity than the 2-8Ds will give you you could look at FullRiver DC335-6 or DC400-6 or similar 6v batteries. Four of these will fit in 2/3 of the footprint of the 8Ds and give you 670 amphr or 830 amph capacity.  The price on the OR batteries is attractive though.
Title: Re: What batteries?
Post by: Caflashbob on March 04, 2018, 12:25:09 pm
Factory had two gels in your coach new.  They do not require equalization.  Other than the  Lifeline brand AGM's cannot be equalized to restore any lost capacity nor does your oem inverter/  Charger have a AGM equalizer profile.

No battery temp circuit was in a 96 coach so to keep from over and undercharging your new batteries I would readjust the battery charging voltage in the heart freedom regularly. 

After 22 years I assume your 96 has had the batteries replaced before?  What is in it now.

I'm extremely conscious of the battery system as from 30+ years in the rv biz batteries were a constant problem.

Boiled dry by single stage chargers like the alternator does still and flooded cells that corroded everything in the compartment.

The gels charge faster requiring less gen run time due to lower internal resistance and have double the cycle life, 

Per cycle the gels are less expensive and are much harder to damage from over or under charging which is why they were oem, 

I would set your alternator to 13.6 volts to avoid over charging all your battery banks in summer while driving.

I really appreciate the newer technology with multi stage chargers, battery temp charger controls, auto  combiners and solar to keep the batteries up in their charge.

Versus needlessly cycling the battery by having their SOC go up and  down a lot.

The more cycling the more capacity is lost over time and the sooner replacements are needed,

Just saying. 

Finally a real battery system setup,can be done after 34 years in the biz,

Without a btms  would really consider the gels as they match the chargers ability in your 96 better.

Heart freedoms past the 100,000 serial number which was in  mid 97's can be fit with a btms.



Title: Re: What batteries?
Post by: Dakota Slim on March 04, 2018, 03:35:37 pm
The most bang for your buck...
6 of these golf cart batteries take about as much space as 2 8D's.
https://www.samsclub.com/sams/duracell-golf-car-battery-group-size-gc2/prod3590228.ip?xid=plp:product:1:1
Title: Re: What batteries?
Post by: Barry & Cindy on March 05, 2018, 12:13:37 am
Chuck, we also only use military style battery terminals on every post of both start and house banks.  Our preference is this style military terminal:
Buy Battery Parts & Tools - Free Shipping over  | Zoro.com (https://goo.gl/mDuHJE)

We also carry spare neg & pos terminals.
Title: Re: What batteries?
Post by: Jack Lewis on March 05, 2018, 01:25:23 am
It is very important to know that these come in both pos and neg.  I too replaced my six military style terminals when replacing my 3 house 8Ds last year.  Trying to use a pos on a neg terminal will result in possibly a too loose connection.  It is not that they are just marked differently, there is actually a couple mm difference.  Military Terminal,Bolt,Copper neg products - Grainger Industrial Supply (https://www.grainger.com/search?searchBar=true&searchQuery=Military+Terminal%2CBolt%2CCopper+neg)
Title: Re: What batteries?
Post by: Chris m lang on March 05, 2018, 09:54:53 am
Four of these lithium batteries would work. You would need four of them and they cost $600 each. No BMS is needed.

http://voltronixusa.com/wp/wp-content/uploads/Voltronix-400Ah-Battery-Cell.pdf

Tim, what did you have to do to the inverter/charger to get it to work with the lithium batteries -- everything I read says what I have on my 1999 U320 won.t work with the lithium batteries.  I wanted to go that route but am reluctant since I am definitely am not a battery expert.  Any guideance would be appreciated
Thanks
Chris
Title: Re: What batteries?
Post by: Caflashbob on March 05, 2018, 06:08:46 pm
Li battery's require stable temps.  Minimum charging temp is 18 degrees C.  65 degrees F. 
Title: Re: What batteries?
Post by: tomklein on March 05, 2018, 06:25:33 pm
I just bought two 4d and one 8d battery from AAA battery in Deleon Springs, Florida for $600.
Title: Re: What batteries?
Post by: ohsonew on March 05, 2018, 09:16:41 pm
Thanks for all the input. I will be figuring out which way to go in the coming days. As always, I appreciate all the help.

Larry
Title: Re: What batteries?
Post by: Carol & Scott on March 05, 2018, 10:56:13 pm
You might consider these: GPL-8DL - Lifeline Batteries (http://lifelinebatteries.com/products/marine-batteries/gpl-8dl/)