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10-25-2022, 11:18 PM
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#1
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Winnebago Master
Join Date: Oct 2017
Location: Elk Grove, CA
Posts: 3,574
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Northstar NSB-AGM31 Battery - Deep Cycle Use?
I have an opportunity to buy a couple of gently used Northstar NSB-AGM31 batteries for less than half price. From the specs they appear to be dual purpose batteries and I was wondering if they would be good house batteries if they check out OK. Normally I'd stay away from dual purpose batteries but I was wondering about these. At 75 lbs they're heftier than some of the other options. I'd be replacing an aging pair of FLA Costco golf cart batteries.
Here are the specs: https://www.northstarbattery.com/product/nsb-agm31
(Also posted on IRV2.com)
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Bob C
2002 Itasca Suncruiser 35U
Workhorse Chassis
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10-26-2022, 03:47 PM
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#2
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Site Team
Join Date: Sep 2009
Location: Spring Branch, TX
Posts: 7,783
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Those 103Ah AGMs look pretty good. I see they are dual purpose, but their price and weight certainly indicate that they are heavy duty batteries.
My Winnebago came with 4-100Ah NAPA Commercial batteries that were similarly priced and similarly weighty. They lasted 5 years before I replaced them for LiPOs but they were still holding a full charge and really didn't need replaced. In fact, I sold them on Craigslist for $150 to a guy that is now using them in his RV as house batteries.
The NAPAs were considered "dual purpose" but I considered them deep cycles.
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2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
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10-26-2022, 09:08 PM
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#3
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Winnebago Master
Join Date: Oct 2017
Location: Elk Grove, CA
Posts: 3,574
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Thanks, that's what I was thinking. I'm still waiting for the seller to answer my email.
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Bob C
2002 Itasca Suncruiser 35U
Workhorse Chassis
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10-28-2022, 04:32 PM
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#4
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Winnebago Master
Join Date: Oct 2017
Location: Elk Grove, CA
Posts: 3,574
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I'm not hearing back from the seller and I just purchased two Renogy 100Ah AGM battery, on sale for $199.97, down from $269.99. This is a little more than the used Northstars but there's no risk. Plus my credit card gives me an additional 24 mo warranty.
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Bob C
2002 Itasca Suncruiser 35U
Workhorse Chassis
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10-29-2022, 03:52 PM
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#5
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Winnebago Owner
Join Date: May 2019
Location: Sartell, MN
Posts: 57
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Quote:
Originally Posted by BobC
I'm not hearing back from the seller and I just purchased two Renogy 100Ah AGM battery, on sale for $199.97, down from $269.99. This is a little more than the used Northstars but there's no risk. Plus my credit card gives me an additional 24 mo warranty.
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Just curious if these are the batteries that you bought.
https://www.amazon.com/dp/B075RFXHYK...lig_dp_it&th=1
I am looking at these and do not trust the reviews that Amazon has on almost anything. If these are the ones it would be good to hear how they are working for you.
I am looking to upgrade to these come the spring.
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Shawn & Debbie.....FMCA#F528777
2005 Winnebago Adventurer 38R
Workhorse 8.1/Allison Transmission
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10-29-2022, 04:25 PM
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#6
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Winnebago Master
Join Date: Oct 2017
Location: Elk Grove, CA
Posts: 3,574
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Quote:
Originally Posted by spierce617
Just curious if these are the batteries that you bought.
https://www.amazon.com/dp/B075RFXHYK...lig_dp_it&th=1
I am looking at these and do not trust the reviews that Amazon has on almost anything. If these are the ones it would be good to hear how they are working for you.
I am looking to upgrade to these come the spring.
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They are. The way things are going, I doubt I'll be able to put them to much of a test by spring. I know what you mean by reviews but, if something has almost 1,900 reviews and you read a good sampling, I think you can tell if they're real. It's the ones that have 75 reviews with comments like "good product", "works great" that I wonder about.
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Bob C
2002 Itasca Suncruiser 35U
Workhorse Chassis
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10-29-2022, 04:41 PM
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#7
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Winnebago Master
Join Date: Aug 2001
Location: North America somewhere
Posts: 2,044
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IMO Renogy is a trusted brand within the solar power community. I plan to buy 3 of those when I replace my present LA house batteries this winter.
I would not buy those starting batteries from Northstar for deep-cycle use. They advertise "thin plates" for faster starting power.
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2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member,FMCA. "We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert the Constitution." Abraham Lincoln
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10-31-2022, 07:01 PM
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#8
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Winnebago Master
Join Date: Oct 2017
Location: Elk Grove, CA
Posts: 3,574
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My two Renogy batteries arrived today in perfect condition and fully charged at 12.81/12.82 volts. They were excellently packed, double boxed with foam padding all the way around, inside both boxes.
That takes care of some of the negative reviews.
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Bob C
2002 Itasca Suncruiser 35U
Workhorse Chassis
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11-02-2022, 04:28 PM
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#9
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Winnebago Owner
Join Date: Aug 2020
Posts: 184
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For future reference, "dual purpose" batteries usually do nothing well (starting or deep-cycle). It's usually achieved by alternating thick plates (deep-cycle) with thin sintered plates (high surface area = starting). AGMs are better at this than flooded (except the spiral-wrapped), but you are much better off buying the battery you actually need.
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2002 Winnebago Brave (WPF32V)
Workhorse P32
S/N 10F71C261406
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11-02-2022, 07:07 PM
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#10
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Winnebago Owner
Join Date: Feb 2017
Posts: 184
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I bought 3 of those Renogy batteries the 7th of Sept this year from Amazon and love them. Mine came with no writing on the batteries and sets of Renogy labels to put on myself!
dick
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2003 Journey DL Whidbey Island USA
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11-02-2022, 09:14 PM
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#11
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Winnebago Master
Join Date: Oct 2017
Location: Elk Grove, CA
Posts: 3,574
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Quote:
Originally Posted by dickb46
I bought 3 of those Renogy batteries the 7th of Sept this year from Amazon and love them. Mine came with no writing on the batteries and sets of Renogy labels to put on myself!
dick
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That's strange. Mine are fully labeled, although they did come with what looks like a window sticker that says something like "Powered by Renogy" but in a style more suited to a window sticker than for the battery.
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Bob C
2002 Itasca Suncruiser 35U
Workhorse Chassis
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