[RE-wrenches] Ni-Fe update?

[jay]

As we are talking about the IronEdison batteries.
I checked their site about lithium and they claim to have a BMS that will communicate with Outback.
I didn’t think anybody had comm with OB?
Can anyone confirm that?

jay 
Peltz power

> On Nov 21, 2018, at 11:36 AM, Ken Schaal <Ken at commonwealthsolar.com> wrote:
> 
> Hey alexis.
> Any thoughts regarding these comments about Ni-fi batteries?
> Ur running them DC direct?
> Hope all is well. Ken
> 
> On Wed, Nov 21, 2018, 2:25 PM David Katz <dkatz at backwoodssolar.com <mailto:dkatz at backwoodssolar.com> wrote:
> AEE Solar sold NiFe batteries from Russia in the late 1990s.  They last a long time but were hard to use with inverters.  A 12 volt pack has 10 cells. Each cell reaches full charge at 1.7 volts so the pack would be at 17 volts. that is 68 volts in a 48 volt pack.  inverters turn off for over-voltage before that.  When they are operating the cells are at 1.2 volts.  The charge efficiency is about 60% when you look at watt hours in vs. watt hours out.  They also use a lot of distilled water.  I had a set that required watering every 3 weeks.  I did not keep up with watering once and one of the cells exploded when the water level got below the plates.
> I would suggest L-ion batteries instead.
> David Katz
> 
> On Wed, Nov 21, 2018 at 10:37 AM Ray <ray at solarray.com <mailto:ray at solarray.com>> wrote:
> Charge efficiency is really low,  Charging parameters can be hard to get right, Voltage is not stable under heavy loads, and they are really expensive to boot.  I've never sold them for these reasons, but I have replaced some sets that customers were unhappy with.  They seem to work OK, only if there are no large surge loads, and the battery and array are sized large enough.  Unfortunately because of the cost, folks seem to really under size them, which only exasperates the above issues.
> 
> There's good reasons this old battery chemistry has not been widely adopted by the solar industry.  It does have its place, and I understand the train industry uses it because A) they have cheap on grid charging available, so efficiency doesn't matter, and B) they have telecomm type loads with very little surge.
> 
> Ray Walters
> Remote Solar
> 303 505-8760
> On 11/21/18 10:55 AM, dan at foxfire-energy.com <mailto:dan at foxfire-energy.com> wrote:
>> Hi Guys, I have a potential customer inquiring about installing a pre packaged Iron Edison system.. I recall hearing strange stories about Ni-Fe batteries but don't recall the specifics. I have done a few searches with mixed results.. And have friends advising I run like a Rabbit.. Thought I'd run it by you folks for an update..
>> Thanks, and Happy Turkey Day.
>> 
>> db
>> 
>> 
>> Dan Brown
>> Foxfire Energy Corp.
>> Renewable Energy Systems
>> (802)-483-2564
>> www.Foxfire-Energy.com <http://www.foxfire-energy.com/>
>> 
>> 
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