Charging NiFe Batteries with Grid Tied SMA SunnyBoy & Sunny Island?
midijeep
Registered Users Posts: 102 ✭✭✭
Hi,
I finally got ever thing wired and hooked up. I have a grid tied SMA sunnyboy 3000TL-US-22, sunny island 6048, midnite solar E-panel, a midnite solar Autoformer. and NiFe Batteries that came fully discharged. I had a licensed solar electrician wire everything up.
With everything turned on the sunny island shows a W755 error (Battery-preservation mode 1 - LoBatMod1). Seems the SI is some kind of standby mode for charging the batteries. Does anyone know how to work around this issue? I believe if I can get the batteries charging the SI will function normally for the charging of the batteries but I need to get the batteries charged. I am not sure if I use an external battery charger what to use?
Any ideas?
I finally got ever thing wired and hooked up. I have a grid tied SMA sunnyboy 3000TL-US-22, sunny island 6048, midnite solar E-panel, a midnite solar Autoformer. and NiFe Batteries that came fully discharged. I had a licensed solar electrician wire everything up.
With everything turned on the sunny island shows a W755 error (Battery-preservation mode 1 - LoBatMod1). Seems the SI is some kind of standby mode for charging the batteries. Does anyone know how to work around this issue? I believe if I can get the batteries charging the SI will function normally for the charging of the batteries but I need to get the batteries charged. I am not sure if I use an external battery charger what to use?
Any ideas?
Comments
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Partially charge batteries in 12v blocks wiith an auto charger? Is there a way to disable low battery cutoff? Ran into this once with Outback and could only change cutoff voltage not disable :-(Off-grid.
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter -
The Sunny Island won't charge unless it reads greater than 41v on the bank. Right now the SI is detecting 34 volts.
Would a charger like this (below) do for a partial charge (doing twelve 1.2volt batteries at a time)? The the battery bank is a 200 Ah capacity.Schumacher SpeedCharge 15 Amp Automotive and Marine Battery Charger
https://www.walmart.com/ip/Schumacher-SpeedCharge-15-Amp-Marine-Battery-Charger/13005745?action=product_interest&action_type=title&beacon_version=1.0.2&bucket_id=irsbucketdefault&client_guid=c9223b72-6532-478c-8712-42bca7d919a7&config_id=72&customer_id_enc&findingMethod=p13n&guid=c9223b72-6532-478c-8712-42bca7d919a7&item_id=13005745&parent_anchor_item_id=13005744&parent_item_id=13005744&placement_id=irs-72-b3&reporter=recommendations&source=new_site&strategy=PWVUB&visitor_id=Y9HheWaCNt-JBFadzqd3OE
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You are going to have problems with a NiFe bank unless you carefully select and re-program your gear. NiFe has a very wide Full-Empty range, larger than most gear allows.
Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
solar: http://tinyurl.com/LMR-Solar
gen: http://tinyurl.com/LMR-Lister , -
Yes that is the sort of charger I was thinking of. You would need to check vendor specs for recommended charging voltage versus charger output and figure out number of cells accordingly. Eg. if charger puts out 15v and batteries want 1.5v per cell you charge 10 cells at a time.Off-grid.
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter -
Correct. I have the necessary numbers to change the inverter for NiFe numbers i.e. boost, float, equalize, etc... With the SMA Sunny Island the NiCd settings are very similar to what I will be using.mike95490 said:You are going to have problems with a NiFe bank unless you carefully select and re-program your gear. NiFe has a very wide Full-Empty range, larger than most gear allows.ect.
Thanks for pointing this out.
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