[RE-wrenches] Iron Edison Batteries

Mon Jul 27 08:15:09 PDT 2015

WrenchesI have had good experiences with these batteries and with the same issues with the magnum on 12 volts, don't seam to have any issues with my 48 volt systems. We did double up the cables to reduce the high load (overdriving) the radians with no issues. It's just the cost, but it should be the last battery you buyJerry

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-------- Original message --------
From: Jay <jay.peltz at gmail.com> 
Date: 07/27/2015  4:47 AM  (GMT-10:00) 
To: RE-wrenches <re-wrenches at lists.re-wrenches.org> 
Subject: Re: [RE-wrenches] Iron Edison Batteries 

Hi dan
I'm curious why you opted for NiFe vs lithium?
JayPeltz 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 FinkBuckville EnergyIREC Certified Instructor™ for: ~ PV Installation Professional~ Small Wind InstallerNABCEP / 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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