[RE-wrenches] Iron Edison Batteries

[Jay]

Hi dan

I'm curious why you opted for NiFe vs lithium?

Jay
Peltz power. 




> On Jul 26, 2015, at 8:11 PM, Dan Fink <danbob88 at gmail.com> wrote:
> 
> I made myself a guinea pig on Iron Edison NiFe cells this year, before I try to install them for any customer. I have now about 90 days on them.
> 1.65 volts per cell charging is what they want and need. PV controllers MPPT type are fine with this. just change the settings (assuming the sun is shining) 
> . Inverter/chargers are not fine, at least not my Magnum OMG! over 1.6v per cell!! Overvoltage! Shut down!
> So I have rewired battery bank as recommended by Mrf with 9 cells at 1.2v instead of 10 cells. And now with my 10.8v battery bank I get surge low voltage wonky waveform hits from the fridge turning on, etc. that reboot  the satellite internet, tv etc.
> My plan is to add another 1kw of solar here for an increase of 50% and rely more on the incoming PV that can bring it all up to 1.65v per cell rather than the generator that can't do it thanks to the inverter firmware.
>  I think my new NiFe batteries will do just great in the long run. But their charge/discharge behavior is a continuing lesson. And I am SO glad to learn these lessons myself, instead of in front of a critical customer. 
> 
> 
> 
> Dan Fink
> Buckville Energy
> IREC Certified Instructor™ for: 
> ~ PV Installation Professional
> ~ Small Wind Installer
> NABCEP / IREC / ISPQ Accredited Continuing Education Providers™
> 970.672.4342
> 
>  
> 
>> On Sun, Jul 26, 2015 at 6:55 PM, jay <jay.peltz at gmail.com> wrote:
>> HI Tom,
>> 
>> They are considered 1.2v nominal.
>> 
>> Charge range is up to 1.7v per cell.
>> For a 24v system usually you pull out 1 cell or 19 cells 19 x 1.7 = 32.3v
>> For a 48, usually 2 or 3 , or 37-38 cells.
>> 
>> If you use much less, then the voltage swings really low, if you go more the voltage is too high for most inverters.
>> The Iota isn’t going to charge them up fully with that low a voltage.  But I don’t know if that version Iota is adjustable, many of the older ones had a internal pot you could turn up.
>> 
>> But heck give it a try and play with it.
>> 
>> jay
>> 
>> peltz power
>> 
>> 
>> 
>> 
>> > On Jul 26, 2015, at 4:34 PM, Tom Lane <tom at ecs-solar.com> wrote:
>> >
>> > I have a friend who has forty ( 40 ) Iron Edison Batteries , he says they are each 1.5 volts and wants to use them for a backup to his aquatics business's . Continuous load 24/7 is only 365 watts with surges to 1200 watts . My guess is that ___# of batteries ( maybe 32 to 36 ? ) can be wire as a 48 volt system ? Any suggestion on charge controllers - Morningstar or MidNite ? . .? A Samplex pure sign wave inverter 2000 watts at 48 volts and an Iota 54 volt battery charger is my guess that it might be the way to power the load - any suggestions  . Anyone have experience with Iron Edison .any suggestions appreciated !  Gator tom PS : any suggested websites ?
>> >
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