Critical feedback needed please on this lot I just purchase

DarkstormNH · September 2017

Gents I picked up the following components from a gent who was planning on building a cabin that did not happen, now I own the lot

My questions:

1: if I string the batteries one string for 24 volts equal 600ah

or I build 2 12 volts and parallel them for 12000 ah concern would be

how do I charge them using the 10% requirement per the multiple feedback from our site

4 Evergreen 200 Watt Solar Modules B Grade (meaning they are are cosmetically imperfect but functionally perfect.)

Question 2: these panel above will not suffice since their spec seems to be 12 volts see picture attach, do I string them for one string on the combiner below

Or do I just scrap them keep them in stock and go with the 4 325 watts panel for now see previous post

1 BTS-15 Battery Temperature Sensor

1 MS 4024 Magnum Pure-Sine Wave Inverter Charger 4000 watt 24VDC 120VAC 60HZ

1 Honda EU2000i Companion generator used for a few hundred hours but will last for 10-20,000 hour
1 ME-RC50 Digital LCD Display Remote Panel w/ 50 feet cable

1 Xantrex XW-MPPT60-150 Solar Charge Controller

Will this cc handle 4 325 watts panel plus the 4 200 watts above

1 TriMetric AH/Volt Meter TM2020 w/ 50' cable

They have a newer version will this one work?

1 Shunt 500A /50 MV

12 AGM 600AH 2Volt solar batteries

2 LA-DC Lightning Arrestors for DC system

2 LA-AC Lightning Arrestor for AC system

5 WEEB Ground Lug 6.7 Stainless Steel Hardware ETL listed (to ground modules)

2 MC4 Solar line 2 connector Pair 10 gauge UL certified with 10 feet 10 gauge cable each (to connect to modules to Combiner Box , modules already have cables to connect to each other)

1 MNPV6. 6 PV Breaker PV Combiner box, NEMA 3R Outdoor Rated

1 MN DC 250 MINI White Aluminum Chassis with 250 Amp Breaker

2 MNEPV-20 20 Amp 150VDC din rail mount breakers (for dc power direct from batteries)

1 63 Amp DC Ground Fault Protector (for Combiner Box power to Charge Controller)

3 63 Amp 150VDC Din Rail Mounted Breaker for Charge Controller Input/Output

30' 4/0 welding cable for battery connecting cable

26 spade type cable terminals (with crimp tool) for connecting batteries

1 100 Amp QO AC Panel box for AC service with 15 Amp and 20 Amp circuit breakers

1 Iota DLS-27-15 24 volt smart charger

DarkstormNH · September 2017

battery info

Nominal voltage 2 volts Capacity 600 ampere hours @20℃, 10 hours rated (cut off voltage 1.80V/cell) Dimension L: 302 mm W: 175 mm H: 330 mm TH: 367 mm Weight approx. 39 kg or 86 pounds Internal resistance Approx. 0.32 mΩ Self-discharge rate Approx. 3% per month @ 25 degree Celsius Discharged: -15 to 50 degree Celsius (5 to 122 degree F ) Charging: 5 to 35 degree Celsius (41 to 95 degree F) Operation temperature range Storage: 0 degree to 40 degree Celsius (32 to 104 degree F ) Floating charge voltage 2.25 to 2.30 volts (-3mv / degree Celsius ) Cyclic charging voltage 2.42 to2.48 volts (-4mv / degree Celsius) Maximum charging currant 120 ampere (A) Boost/equalizing charge Not required Terminal type Copper Container material General ABS resin Charging Characteristics(25℃) Cycle Life(25

mcgivor · October 2017

You have some nice components to build a system, is this the intent? If so knowing the loads would be helpful, details of the panels, Voc,Vmp, Imp etcetera are needed, but for starters get the batteries on charge if the have been sitting unused for any length of time. With that inverter you would definitely need to use 24V since that is its nominal voltage.

DarkstormNH · October 2017

mcgivor said:

You have some nice components to build a system, is this the intent? If so knowing the loads would be helpful, details of the panels, Voc,Vmp, Imp etcetera are needed, but for starters get the batteries on charge if the have been sitting unused for any length of time. With that inverter you would definitely need to use 24V since that is its nominal voltage.

Thanks he was using the iota to keep the bank charge he showed me each side was at 13+ volts also I'm attaching a picture of the panels

Estragon · October 2017

How are the batteries wired now? Was the 24v iota charging when the 13v reading was done?

The 12v panels should work fine with that controller. You could connect them in series for a string voltage of ~80-90v, which is well within the 150v limit of the controller. Adding 4x325w@24v panels would be well over the 60a capacity though, so you'd need a second controller.

DarkstormNH · October 2017

Estragon said:

How are the batteries wired now? Was the 24v iota charging when the 13v reading was done?

The 12v panels should work fine with that controller. You could connect them in series for a string voltage of ~80-90v, which is well within the 150v limit of the controller. Adding 4x325w@24v panels would be well over the 60a capacity though, so you'd need a second controller.

Thanks for the feedback to be clear what you are saying is I can make one string with these panel and add another string with the other panel to the combiner?
the reading was done couple of days ago he keep them in float stage using the honda and the iota

MichaelK · October 2017

The 12v panels should work fine with that controller. You could connect them in series for a string voltage of ~80-90v, which is well within the 150v limit of the controller. Adding 4x325w@24v panels would be well over the 60a capacity though, so you'd need a second controller.

Since Darkstorm is in Haiti, will the system really need a second controller? Assuming the panels are in hot topical sun, their output is going to be closer to NOCT values rather then STC. Derating 2100 total watts by 75%, their net production is ~1575watts, so charging at 29.4 volts would max out at ~54 amps.

Estragon · October 2017

I didn't know he was in Haiti, so derating panels makes sense. Presumably the batteries would also be warm, so temp compensated charging voltage would be a bit lower, but could still likely get away with one CC.

Personally, I wouldn't want to run that close to rated output, especially in a hot climate, and wouldn't mind the redundancy.

DarkstormNH · October 2017

MichaelK said:

The 12v panels should work fine with that controller. You could connect them in series for a string voltage of ~80-90v, which is well within the 150v limit of the controller. Adding 4x325w@24v panels would be well over the 60a capacity though, so you'd need a second controller.

Since Darkstorm is in Haiti, will the system really need a second controller? Assuming the panels are in hot topical sun, their output is going to be closer to NOCT values rather then STC. Derating 2100 total watts by 75%, their net production is ~1575watts, so charging at 29.4 volts would max out at ~54 amps.

Micheal Thank you how would you go by stringing them together i understand the 4 of the 12 volts panel in series for one string how about the other 4 325 watts panel do i make 2 string of two panel each? I have the midnite combiner that can accept the 3 strings
please advise

westbranch · October 2017

see post #5 again, you will need another CC for the larger W panels, you can not mix them and get the full output you expect. It could be damaging to the CC if mixed... Again 2 charge controllers

Critical feedback needed please on this lot I just purchase

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