EnergyCell 200NC PSOC operation and charging

Discussion about the OutBack Energy Cell Batteries
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raysun
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Posts: 1011
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower One: FX3048T, (2) FM80, MATE3s, FlexNetDC
Outback 200NC batteries (8 @ 48v)
Outback IBR3 battery enclosure
Suniva 330 watt panels (12 - 6 Strings @ 2 Series)
Hyundai 355 watt panels (6 - 3 strings @ 2 series)

EnergyCell 200NC PSOC operation and charging

Post by raysun » Tue Mar 06, 2018 1:29 pm

EnergyCell 200NC batteries are designed to give improved cycle life performance in Partial State of Charge (PSOC) applications. After reading all the literature, I'm still a bit confused by that statement.

The Life Cycle Improvement graph in the attachment shows a working SOC between 50-80%.

If we are consuming 40% of the battery amp-hour capacity daily, is it better for its cycle life to do so between a SOC of 80 - 40%, or the more conventional 100 - 60%?

If the battery is designed for optimum longevity in a PSOC state, what occurs within the battery when fully charging?
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energycell_nc_spec_table_v2.png

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Brandon Provalenko
OutBack Management
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Joined: Wed Feb 01, 2017 11:20 am

Re: EnergyCell 200NC PSOC operation and charging

Post by Brandon Provalenko » Tue Mar 06, 2018 5:08 pm

Hello Raysun -

The EnergyCell "NC" battery is designed to give "improved" cycle life performance in PSOC applications. However, it's important to understand that the battery should still be fully charged at least once per week, I'd recommend twice per week. Consider that the battery was designed to withstand environments where the battery isn't likely to be fully charged on a daily basis, however, being fully charged daily isn't a bad thing. That said, my recommendation would be to cycle the battery at the more conventional 100 - 60% range when possible while understanding that it will be totally fine if the battery is within a 60 - 90% SoC for days.

raysun
Forum Emperor
Posts: 1011
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower One: FX3048T, (2) FM80, MATE3s, FlexNetDC
Outback 200NC batteries (8 @ 48v)
Outback IBR3 battery enclosure
Suniva 330 watt panels (12 - 6 Strings @ 2 Series)
Hyundai 355 watt panels (6 - 3 strings @ 2 series)

Re: EnergyCell 200NC PSOC operation and charging

Post by raysun » Tue Mar 06, 2018 5:17 pm

Hey Brandon,

Daily charging to 100% has been SOP for the past two years these batteries have been in service. During that time there has been less than 5% of days in PSOC at the end of the charge cycle. Rarely do the batteries experience DOD > 40%, with a small handful at > 50%. The minimum SOC was 0% during commissioning, and 32% on the last day of a 10 day trip off-island.

The question is still how to interpret the charts and statements in the literature, vis-a-vis this bartery's particular chemistry.

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Brandon Provalenko
OutBack Management
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Joined: Wed Feb 01, 2017 11:20 am

Re: EnergyCell 200NC PSOC operation and charging

Post by Brandon Provalenko » Tue Mar 06, 2018 6:12 pm

I was thinking about how to answer this without assuming too much, but I have to ask some clarifying questions. What specifically are you trying to interpret or maybe better, what questions are you trying to answer in terms of capability, etc? It may be better to walk through this with you on the phone too. If so, just private message me and we'll make some time to talk. It sounds like you may have some very valuable feedback on how we can make our messaging more clear so there isn't so much room for interpretations... :grin:

raysun
Forum Emperor
Posts: 1011
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower One: FX3048T, (2) FM80, MATE3s, FlexNetDC
Outback 200NC batteries (8 @ 48v)
Outback IBR3 battery enclosure
Suniva 330 watt panels (12 - 6 Strings @ 2 Series)
Hyundai 355 watt panels (6 - 3 strings @ 2 series)

Re: EnergyCell 200NC PSOC operation and charging

Post by raysun » Tue Mar 06, 2018 8:59 pm

Thanks Brandon. Sent PM.

victorjesus
Forum Member
Posts: 7
Joined: Sat Mar 31, 2018 8:02 pm
My RE system: 6.85KW system consisting of:

21 GCL 320w panels
2 Midnite Combiner boxes
1Radian 8048
Mate 3s
2 Flexmax 80 Charge Controllers
12 Energycell 200NC with battery bank
FNDC and HUB

Re: EnergyCell 200NC PSOC operation and charging

Post by victorjesus » Sun Apr 01, 2018 5:35 pm

Does anyone knows if the Mate 3s can be programmed to charge the batteries ONLY with solar and avoid using the grid to do so?

raysun
Forum Emperor
Posts: 1011
Joined: Tue Jul 26, 2016 5:57 am
My RE system: Flexpower One: FX3048T, (2) FM80, MATE3s, FlexNetDC
Outback 200NC batteries (8 @ 48v)
Outback IBR3 battery enclosure
Suniva 330 watt panels (12 - 6 Strings @ 2 Series)
Hyundai 355 watt panels (6 - 3 strings @ 2 series)

Re: EnergyCell 200NC PSOC operation and charging

Post by raysun » Mon Apr 02, 2018 8:42 am

If using Outback inverters, the charger can be turned off via the MATE3(s). This would defeat battery charging from the grid, leaving the solar chargers to the task.

victorjesus
Forum Member
Posts: 7
Joined: Sat Mar 31, 2018 8:02 pm
My RE system: 6.85KW system consisting of:

21 GCL 320w panels
2 Midnite Combiner boxes
1Radian 8048
Mate 3s
2 Flexmax 80 Charge Controllers
12 Energycell 200NC with battery bank
FNDC and HUB

Re: EnergyCell 200NC PSOC operation and charging

Post by victorjesus » Mon Apr 02, 2018 7:18 pm

Thanks Raysun!

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