Problem with one of twelve 106NC batteries

Discussion about the OutBack Energy Cell Batteries
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mevenable
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Posts: 21
Joined: Mon Mar 12, 2018 1:04 pm
My RE system: GS 8048 inverter, FM80 charge controller, 2 strings of 4 NC200 batteries, soon to be 3, 15 panels 270W each (4 kW), Mate3s

Problem with one of twelve 106NC batteries

Post by mevenable » Mon Mar 12, 2018 1:29 pm

I live in Nicaragua. I purchased 3 banks of 4 Outback 106NC batteries two years ago. They have done well, but now one of the twelve seems weak, I first noticed this when battery performance fell around the end of October, and quickly discovered the problem. While all the batteries charge equally, and perform equally during the day (even if the solar panels are disconnected and a 1.5 kW load is used, they hold up equally well), and work equally for a few hours into the evening, after that one of the batteries starts getting weak much faster - after about 1-1.5 kWh of use. By morning, if I let it run that way, there is a 0.8 V difference with the other three batteries in the string without a load, and 1.4 or more with any sort of load. At first I just used the batteries mostly as a backup at night while I tried to resolve this (I do have the grid), and then I disconnected the string with the bad battery and started just using the two. The string with the bad battery was fully charged when I disconnected it, and all four batteries have held their charge about the same for over 48 hours, going down to 12.7-12.8 V. I contacted Outback and they told me not to run the string with much charge differnce, which I had already guessed, and recommended a few things to try, like increasing the Absorb time, which didn't help. They told me that the 106 NC has been discontinued, and they could not tell me what other battery if any would work. They gave me a phone number for the actual manufacturer, who then referred me to one of their engineers, but that fellow does not answer his phone or return calls. I need to figure out what to do, and whether I need to buy all new batteries in a case like this, or if there is some sort of reconstruction that could be attempted, or whether there is some other battery I can put in the string. Any ideas?
Last edited by mevenable on Wed Dec 11, 2019 11:47 am, edited 1 time in total.

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Kurt Lundquist
Alpha Energy Engineering
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My RE system: VFX3524, Mate3, 200Ah 24V AGM Battery Bank
Location: Arlington, WA

Re: proper use of NC200 batteries

Post by Kurt Lundquist » Tue Mar 13, 2018 11:55 am

The NC batteries like to have a freshening charge every 30-90 days. I think you should give that a try. See manual page 14 for details http://www.outbackpower.com/downloads/d ... manual.pdf

Let us know how it goes.

Thanks!

-Kurt
Kurt Lundquist
Renewable Energy Project Engineer
http://alphaenergy.us/

mevenable
Forum Member
Posts: 21
Joined: Mon Mar 12, 2018 1:04 pm
My RE system: GS 8048 inverter, FM80 charge controller, 2 strings of 4 NC200 batteries, soon to be 3, 15 panels 270W each (4 kW), Mate3s

Re: proper use of NC200 batteries

Post by mevenable » Wed Mar 14, 2018 9:07 am

I might try a freshening charge, but I was not sure that it was needed, since they charge fully every day and are all holding about the same charge

mevenable
Forum Member
Posts: 21
Joined: Mon Mar 12, 2018 1:04 pm
My RE system: GS 8048 inverter, FM80 charge controller, 2 strings of 4 NC200 batteries, soon to be 3, 15 panels 270W each (4 kW), Mate3s

Re: proper use of NC200 batteries

Post by mevenable » Wed Mar 14, 2018 9:46 am

oops - my bad, they are not the NC200, they are 106 NC batteries

mevenable
Forum Member
Posts: 21
Joined: Mon Mar 12, 2018 1:04 pm
My RE system: GS 8048 inverter, FM80 charge controller, 2 strings of 4 NC200 batteries, soon to be 3, 15 panels 270W each (4 kW), Mate3s

Re: Problem with one of twelve 106NC batteries

Post by mevenable » Wed Dec 11, 2019 4:30 pm

Btw, I wrote on top of an old post since I couldn’t figure out how to post a new one

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