Surrette S-530 batteries small fraction of capacity

Blackcherry04 · February 2013

Re: Surrette S-530 batteries small fraction of capacity

The best stuff I ever found is " Engine Fogging Oil " It foams and spreads easily over the whole connector and in places you can never get grease, a little dab will do you, I carry a can everyday in my tool bag. Batteries in boxes are always a pain. They almost need constant flow through ventilation even with a fan, most boxes almost never have that.

http://www.jmsonline.net/sta-84812.htm?gclid=CO_YvujTuLUCFRKmPAodTDAAkw

inetdog · February 2013

Re: Surrette S-530 batteries small fraction of capacity

NorthGuy wrote: »

So, if you do see a significant difference (such as 1.5 - 2V), it is worth investigating.

This is important because SCCs use the voltage to charge the battery. If SCC has a wrong voltage, it cannot charge the battery correctly.

Most likely the resistance in the path between the individual CCs and the battery box/bus is too high. The CC that is delivering the most current will see a higher voltage at its terminals than the others do, and when it switches from Bulk to Absorb or Absorb to Float it will drop the current it delivers. This will cause one of the other CCs to see (what it thinks is) the battery voltage drop and that CC will switch into Bulk. That second CC will then deliver max current and will see the apparent battery voltage rise. When it sees a transition voltage, it too will drop out and another CC will try to pick up charging.
You either have too small wires or some very bad connections among them. Some CCs have a provision for remote battery voltage sensing via different wires which do not carry current. That will improve things, but the voltage drop is still something that needs to be addressed.

Vic · February 2013

Re: Surrette S-530 batteries small fraction of capacity

Regarding the white crud on the batrtery terminals;

When you can, would recommend that you shut down the system, and carefully remove each battery cable from each battery terminal. Clean the battery terminals and battery cable lugs with some dilute baking soda in water. Wipe the battery terminals and battery cable lugs with a clean wet rag to rinse. Lightly burnish only the battery terminals with perhaps some 150 to 220 grit sand paper. While you are at it, carefully clean the tops of the batteries with the dilute baking soda, and rinse with clean water. Be very careful that none of these fluids onto or into the battery caps. BB Bill's suggestion of the Water Miser caps is a good one, as, at least these caps do vent upward, not outward.

Apply a fairly liberal coat of petroleum jelly over the entire terminal and on each cable lug, and remount each cable to the correct terminal, being careful to NOT short any battery with any cable. Use the correct sized Stainless Steel hardware (usually 5/16") using large pattern SS flat washers on top of the lug and under the lock washer. Use SS lockwasher and plain SS nut. Torque to spec, and you should be good for years of service, although each battery/cable connection should be checked for correct torque each year when doing annual maintenance.

The best battery cable lugs are Tin-plated, which resist corrosion.

The above process is what has been used here, and so far, there is no noticeable corrosion on any of the battery connections.

I had thought that the Schneider system with multiple CC on a single battery bank were networked to work in uinson, such that when one CC thought it was time to transition into Absorb or Float, that they all did so at the same time ... I dunno, and am lucky that I do not know or need to know that!
YMMV, Good Luck with the new system. Vic

inetdog · February 2013

Re: Surrette S-530 batteries small fraction of capacity

Vic wrote: »

I had thought that the Schneider system with multiple CC on a single battery bank were networked to work in uinson, such that when one CC thought it was time to transition into Absorb or Float, that they all did so at the same time ... I dunno, and am lucky that I do not know or need to know that!

If they are capable of networking into a master/slave configuration (and I have no doubt that they are), it requires a communication cable system joining them up and a configuration set to use that network. Without that they are just each playing their own game.

Vic · February 2013

Re: Surrette S-530 batteries small fraction of capacity

inetdog wrote: »

If they are capable of networking into a master/slave configuration (and I have no doubt that they are), it requires a communication cable system joining them up and a configuration set to use that network. Without that they are just each playing their own game.

Yep, only the MN Classic is clairvoyant! Just kidding, would be difficult for them to communicate wiithout a communication cable of some sort. But with a comprehensive system as described above, am sure that it has the SCP, the FirmWare Implanter "tool" (sounds painful!) and all the other Schneider extra cost doo-dads. Vic

EDIT, AND the very cool Auto-Save feature of this teriffic site just saved this short post. THANKS N.AZ W&S!

YehoshuaAgapao · February 2013

Re: Surrette S-530 batteries small fraction of capacity

Regarding the white crud on the batrtery terminals;

When you can, would recommend that you shut down the system, and carefully remove each battery cable from each battery terminal. Clean the battery terminals and battery cable lugs with some dilute baking soda in water. Wipe the battery terminals and battery cable lugs with a clean wet rag to rinse. Lightly burnish only the battery terminals with perhaps some 150 to 220 grit sand paper. While you are at it, carefully clean the tops of the batteries with the dilute baking soda, and rinse with clean water. Be very careful that none of these fluids onto or into the battery caps. BB Bill's suggestion of the Water Miser caps is a good one, as, at least these caps do vent upward, not outward.

Apply a fairly liberal coat of petroleum jelly over the entire terminal and on each cable lug, and remount each cable to the correct terminal, being careful to NOT short any battery with any cable. Use the correct sized Stainless Steel hardware (usually 5/16") using large pattern SS flat washers on top of the lug and under the lock washer. Use SS lockwasher and plain SS nut. Torque to spec, and you should be good for years of service, although each battery/cable connection should be checked for correct torque each year when doing annual maintenance.

The best battery cable lugs are Tin-plated, which resist corrosion.

The above process is what has been used here, and so far, there is no noticeable corrosion on any of the battery connections.

Will do for the cleaning. Going to buy me a torque wrench. Hercules did these terminal connections (extremely tight). Will have to call James to come back and help on these. At bolts are is 5/16 x 1" stainless steel. The bolts are stainless steel and think the nuts are too, but not sure about the washers. To corrosion is on the washer side, at least what I see with the cables connected.

James did the solar racking, all electrical, panel & device mounting, and battery wiring; Trevor did the custom work on the battery boxes, battery venting, and generator shed.; I did only the low voltage for installation, but the procurement/engineering/general contracting/config/operation/support is DIY (me). James is mainly a union commercial electrician (Has residential license too but 80% of his work is commercial and I like the commercial grade equipment and construction) but has done 5 grid-tie systems before. About $10K cheaper overall than Dependable Solar, a good payoff for DIY design/general contracting/procurement, and Dependable solar would not let me pick the gear or nitpick specifications (like over-engineering wire size, pre-designing for expansion).

I had thought that the Schneider system with multiple CC on a single battery bank were networked to work in uinson, such that when one CC thought it was time to transition into Absorb or Float, that they all did so at the same time ... I dunno, and am lucky that I do not know or need to know that!
YMMV, Good Luck with the new system. Vic

All the components are networked together and on the network. I found out the cause of the varying voltage. The enhanced interaction mode was not enabled. The manual was erroneous. The voltage display on the charge controller is lagged. It is more prompt to update through the device status screens on the XW_Config. The voltage was cycling up and down a 3-volt range every 10-15 sec as the inverter tried to pull as many amps to sell to the grid as possible without going below the grid support voltage. With grid support at 57.6V the voltage is a lot less stable than at float-1 (51.5). Mike at Xantrex said the grid support voltage had to equal the equalization voltage, not the bulk/absorb voltage as stated in the manual to enable enhanced interaction mode. Mike for some reason prefers me to keep grid support at float-1V long-term instead of using advanced interactive mode. I called xantrex this morning because I woke up to an inverter doing an absorption charge off the grid at 6 amps on a 800AH battery bank (it is configured to 800AH so it should exit at 16A, not go all the way until the absorption deadline everytime). Plus I don't know why it started charging in the first place. I never seen the batteries drop to 50V (Recharge setting) in one night before. I obeyed Mike for now and will do the config reset after sundown (it is happily selling to the grid now - that ain't broken). XW-Config is somewhat unstable and a config reset might fix it.

Photowhit · February 2013

Re: Surrette S-530 batteries small fraction of capacity

Just for the record, O'Rielly's auto parts sells a $5 glass hydrometer, it is available at the store at; 1110 South Gilbert Road - Mesa, AZ

I bought 1 here in Missouri (OK 2) and it compares with my more expensive hydrometer. Not sure if you'll get a Saturday delivery unless you request it...

NorthGuy · February 2013

Re: Surrette S-530 batteries small fraction of capacity

YehoshuaAgapao wrote: »

I woke up to an inverter doing an absorption charge off the grid at 6 amps on a 800AH battery bank (it is configured to 800AH so it should exit at 16A, not go all the way until the absorption deadline everytime).

This works on mine. I use it to set ending amps and it worked every time. There's a separate bank size setting for each of the SCCs and for XW6048. You can use SCP to see if the setting for XW6048 is indeed correct.

It's also possible that this was not an absorption, but float. You can see the stage on SCP.

YehoshuaAgapao wrote: »

Plus I don't know why it started charging in the first place. I never seen the batteries drop to 50V (Recharge setting) in one night before.

Could be a power outage. It re-charges if there's a power outage, however small it can be. Two seconds without power, and it starts re-charging.

YehoshuaAgapao · February 2013

Re: Surrette S-530 batteries small fraction of capacity

Ok I got the deka hydrometer. The right box is pretty consistent, about 1245-1250. Didn't test them all, but tested a random cell in 4 different batteries. The left box has issues and is consistent with the 0.4V (single battery) voltage drop starting at battery #3. First two batteries (starting from the positive battery cable from the inverter) read like the right battery box - 1245-1250 (tested one cell of battery #1 and all cells in battery #2 and 3). Battery #3 has 1 cell at 1235 and 2 cells at 1240. Tested 4 more random cells in batteries #4-8 and they are all reading 1240-1245.

Wonder if I should switch battery #3 with #8 (make the battleneck battery last in the string) in the left battery box, disconnect the right battery box (these are all consistent on voltage and the 4 hyro'd cells were consistent), and do a corrective equalize and then try to call Surrete if that battery does't improved or the other 5 batteries don't improve.

The batteries have been charged this morning and have been on float for 2-3 hours and the inverter is selling to the grid right now. THe temperature corrector ran between -1 and -2.

Also any technique suggestions to not drip from the bottom of the hydrometer? I cannot read it while it is inserted in the battery.

Blackcherry04 · February 2013

Re: Surrette S-530 batteries small fraction of capacity

If they were mine, I'd split them and do the EQ and see where your at. Ideally you'd have the right equipment and you'd work on a couple at a time. Maybe you can identify the issue in that second box. All it takes is one battery to throw it all off. Doesn't sound like anything major. You can move them around, that never hurts, I do mine once a year when I clean the terminals.

Carry a Styrofoam cup for your Hydrometer.

Vic · February 2013

Re: Surrette S-530 batteries small fraction of capacity

You really should leave the tip of the Hydrometer in the vent well tube while you are taking readings. If you must kneel, then I'd do that. When done with one cell expel the electrolyte and "thack" the hydro tip against the upper part of the vent well tube to try to elinimate drips. If you keep the hydrometer's tip in the electrolyte while taking readings, you have the best chances of not dribbling the electrolyte at all.

Over a period of time, electrolyte that is dribbled anywhere other than back into the cell from which it came, will cause loss of electrolyte from the cells, and when topping - up with water the electrolyte does become diluted a bit, never to be replaced.

I would NOT yet do a Corrective EQ. But an EQ is a normal part of commissioning a battery bank.

Normally, one would number each battery and cell of each battery (like battery #1 A, B, and C for the individual cells). Measure both the voltage of each battery, and the SG of each cell for the entire bank. RECORD these in the your battery Logbook. You can identify one of the lowest SG cells as a Pilot Cell. This can be used to quidkly get a feeling of the overall State Of Charge of the bank.

When measuring SGs with a Hydrometer, pull and expel two or three samples from the cell, and measure on the third or fourth pull. Make ceraain that the float of the hydro is not sticking to the walls of the outside tube, and that the top of the float is not hitting any stopper that may be at the top of the outside tube.

When you are done measuring SGs, be certain to rinse the Hydro with distilled water at least two times. If this is not done, there will be some sticky crud build up over a period of time, and air bubbles will stick the this crud, causing erronious readings. Any built up crud is almost impossible to remove. Store the Hydrometer is as dust free a place that you can find.

It is fine to move batteries around to try to balance string V.

Would suggest that you DO measure the SG and voltage of ALL of the cells in each bank, and record. This may help your decision on how to rearrange any of the batteries.

Believe that you should check the electrolyte level in each cell of each battery, and add water as needed. Normally the level should be between 0.25 and 0.50 inches below the bottom of the vent well tube.

Would suggest that you do a LONG Absorption with the Abs voltage as high as 59 V (for now).This could be in the range of four or five hours -- trying to really get the batteries charged. Then you could do an EQ at about 62.5 or even 63 V. All charge voltages should be Temperature Compensated. Monitor the SG of several of the lowest cells. Normally an EQ will be done while the bank is being monitored.

Glad that you have the Hydrometer, and that you care about and are monitoring your valuable batteries.
Pleas let us know how you are progressing. Vic

BB. · February 2013

Re: Surrette S-530 batteries small fraction of capacity

If you need light, an LED head lamp works great.

-Bill

Ralph Day · February 2013

Re: Surrette S-530 batteries small fraction of capacity

I concurr with Bill, a little led head lamp is indispensable, and not just in the battery box. I use it wherever spot lighting is necessary, like under the car hood, underneath the car, trying to find things on the floor under furniture etc.

My knees don't like kneeling anymore. I have a tiny chair that I can sit on and lean over the battery box for watering and hydrometer reading. It's easier on the back than stooping over and easier on the knees than kneeling. There's a old 8mm movies of me sitting on this same chair at 2-3 years old..in the late 1950's.

A solid box of the right height would also do for sitting on.

Ralph

YehoshuaAgapao · February 2013

Re: Surrette S-530 batteries small fraction of capacity

Glad that you have the Hydrometer, and that you care about and are monitoring your valuable batteries.

Yeah got them for $288 apiece, which is $4600 just for the batteries, Probably $7000 for anything directly related to the batteries. Batteries, freight for drop-shipping from surrete, battery cables, deck boxes, labor for doing the ventilation on the deck boxes, server fans & louvers (10-pack wholesale, used 4 fans, all 10 louvers), 5" boiler vent pipe & soffit vent louvers, stainless steel fasteners for terminals. I think the going retail rate for S-530 is $350 each so replacing them will cost $5600 plus $800 for freight. Replacing the inverter and all the charge controllers is $5000. Batteries are expensive. At expansion time Will need $10-15K for these replacements (i'm hoping I can get the batteries to last 10 years), and add $8-10K for chimney removal and main electrical panel upgrade and 2nd inverter (expansion prerequisites), then the additional panels (9 more on roof, 12 on ground mount, or if funds available on the masts of 2 wind turbines).

inetdog · February 2013

Re: Surrette S-530 batteries small fraction of capacity

Ralph Day wrote: »

My knees don't like kneeling anymore. ....easier on the knees than kneeling.

My knees don't like squatting anymore, and I was not really happy with kneeling just from the pressure and bruising. I tried knee pads, but they were such a pain for such a small benefit that I gave up on them.
Then I discovered double-knee work pants with a built-in pocket for a thin foam knee pad. It never gets out of place, does not restrict movement, washes with the pants, and gives enough padding for a hard floor or even small gravel. I find it much more comfortable to kneel now!

waynefromnscanada · February 2013

Re: Surrette S-530 batteries small fraction of capacity

Knees and back, that's why I built a stand for my L-16's, raised them to where I can deal with them standing up

Ralph Day · February 2013

Re: Surrette S-530 batteries small fraction of capacity

So Wayne, do you have younger helpers that put them on the rack? Or is it just once moved up, a week or two of back pain, then years of less uncomfortable battery maintenance? My monster CS5000 8v units are 450lbs. The cells I replaced are 115 pounds each. I think I have one battery replacement left in me.

ralph

YehoshuaAgapao · February 2013

Re: Surrette S-530 batteries small fraction of capacity

I cleaned out all my terminals today. It was a 3 hour job. Used sandpaper (150 was too rough, used 220 mostly) on the terminals, cleaned with baking soda-water, gobbed it good with petroleum jelly, and reconnected. 40% of the terminals had noticeable corrosion. It was almost entirely on the flat washers, which were not stainless steel. James came to help. 2 of the terminals had the washers corroded all the way through and just starting to eat through the tin coating on the battery cables (I think it is tin). The bolts and nuts and lock washers that were stainless steel were completely corrosion free. The flat washers were replaced with stainless steel. Each terminal has a bolt, nut, lock washer, and two flat washers, now 100% stainless steel. (order is bolt, lock washer, flat washer, cable, terminal, flat washer, nut) I also switched batteries #3 with #8 in the left box. The voltage balance in that box has improved. There are 3 batteries that are high by 0.1 volts and 1 battery ( #8, was #3 ) that is low by 0.2 volts (on a 6 volt battery). The right box is dead even, +/- 0.05 volt.

I raised the absorption voltage setting to 58.8V. The this is being compensated to 59.2V about.

The xantrex inverter still likes to do 6 amp absorption charges (it does start out higher, but doesn't exit until 6 amps). It went into absorption immediately after powering up the DC again. It lasted about 20 minutes but didn't exit until 6A (they floated all day on PV). Should be 16A. Inverter and all charge controllers are configured for 800AH.

YehoshuaAgapao · February 2013

Re: Surrette S-530 batteries small fraction of capacity

A folding chair avoids all need for kneeling for watering. It is easier to stand and bend over when watering though (I still have flexible hamstrings). Don't work for reading a hydrometer while still inserted in the battery cell though. The folding chair helped a lot when cleaning those terminals though.

Ralph Day · February 2013

Re: Surrette S-530 batteries small fraction of capacity

The order for fasteners should be bolt, flat washer, battery terminal, flat washer, lock washer, nut. The lock washer should be the last thing before the nut, to hold the nut.

Better yet would be bolt, flat washer, terminal, flat washer, nylock nut. Nylocks are self locking, there's nylon threaded material at the terminal end (after regular ss nut, it looks like an acorn). Remember that stainless will "gall" which is freezing together...use some stainless anti gall type anti-seize compound to preclude that happening.

Lead terminals will "relax" or squish out a minute amount over time. At least yearly check the tightness/torque of the fastener assembly.

Ralph

waynefromnscanada · February 2013

Re: Surrette S-530 batteries small fraction of capacity

Ralph Day wrote: »

So Wayne, do you have younger helpers that put them on the rack? Or is it just once moved up, a week or two of back pain, then years of less uncomfortable battery maintenance? My monster CS5000 8v units are 450lbs. The cells I replaced are 115 pounds each. I think I have one battery replacement left in me.

ralph

Hahaha When I did it back in 07, my back was still fairly strong, only suffered for a month after lifting them up in place. Hahaha We shall see what takes place when they need replacing. Thankfully mine are "only" 113 lbs each. I'd have to use some type of wench if I had your batteries!

NorthGuy · February 2013

Re: Surrette S-530 batteries small fraction of capacity

YehoshuaAgapao wrote: »

It lasted about 20 minutes but didn't exit until 6A (they floated all day on PV). Should be 16A.

It only exits when the the current keeps under threshold for 3 minutes. If it's droping rapidly (as it would on already charged batteries) it may be able to drop from 16A to 6A during these 3 minutes. If you discharge to 50% or so, and then re-charge, the current will not be dropping that fast.

waynefromnscanada · February 2013

Re: Surrette S-530 batteries small fraction of capacity

YehoshuaAgapao wrote: »

I cleaned out all my terminals today. It was a 3 hour job. Used sandpaper (150 was too rough, used 220 mostly) on the terminals, cleaned with baking soda-water, gobbed it good with petroleum jelly, and reconnected. 40% of the terminals had noticeable corrosion. It was almost entirely on the flat washers, which were not stainless steel. James came to help. 2 of the terminals had the washers corroded all the way through and just starting to eat through the tin coating on the battery cables

My 11 year old batteries, cables etc have never needed cleaning. In fact they're for all intents and purposes, just like the day one.
Why? Because as I assembled them, I gave all metal parts a coating of Rust Check, and after that, once a year I gave each terminal, including all parts fastened at the terminals, a brief shot of Rust Check, enough to renew the slight coating. Perhaps it's only available here in Canada. I'd never do it any other way!
The top right, red can: http://rustcheck.com/index.php?option=com_djcatalog2&view=items&cid=6:aerosols-rp&cid=6:aerosols-rp&Itemid=105

NorthGuy · February 2013

Re: Surrette S-530 batteries small fraction of capacity

waynefromnscanada wrote: »

Hahaha When I did it back in 07, my back was still fairly strong, only suffered for a month after lifting them up in place. Hahaha We shall see what takes place when they need replacing. Thankfully mine are "only" 113 lbs each. I'd have to use some type of wench if I had your batteries!

That's not too much. Mine are 315 lbs each. They're only 2 inches of the floor. We managed to put them in, but we wouldn't be able to install them if we had to lift them even a foot. Since they are 2 feet tall, I don't need to bend too much to service them.

solar_dave · February 2013

Re: Surrette S-530 batteries small fraction of capacity

waynefromnscanada wrote: »

Hahaha When I did it back in 07, my back was still fairly strong, only suffered for a month after lifting them up in place. Hahaha We shall see what takes place when they need replacing. Thankfully mine are "only" 113 lbs each. I'd have to use some type of wench if I had your batteries!

Having the wench do the lifting is always better on your BACK! But probably not on your home life! LMAO!

niel · February 2013

Re: Surrette S-530 batteries small fraction of capacity

i must have a defective wench as mine won't do that.:p

NorthGuy · February 2013

Re: Surrette S-530 batteries small fraction of capacity

YehoshuaAgapao wrote: »

At expansion time Will need $10-15K for these replacements (i'm hoping I can get the batteries to last 10 years), and add $8-10K for chimney removal and main electrical panel upgrade and 2nd inverter (expansion prerequisites), then the additional panels (9 more on roof, 12 on ground mount, or if funds available on the masts of 2 wind turbines).

I noticed that you have four XW SCCs. I now have 2, but I may decide to buy 2 more. That would make 5 devices on XanBus - 4 XW SCCs and SCP, all powered by XW6048. Their docs say that XW6048 provides 800mA, and each XanBus device requires 200mA. So, 5 devices would require 1000mA. In theory that's a little bit more than XW6048 supplies. I think 5 devices should still be Ok. But it's always better to know for sure. You have 5 devices. Did you use any additional sources to power XanBus? If not, have you noticed any problems, such as devices getting desynchronized, not all devices seen on SCP, stale screens etc.?

YehoshuaAgapao · March 2013

Re: Surrette S-530 batteries small fraction of capacity

Haven't had any network issues with the charge controllers falling off the network. The AGS does fall off the network briefly an average of once every other day.

This is my network chain:

XWConfig<-5ft->SCP<-3ft->SCC1<-3ft->SCC2<-3ft->SCC3<-3ft->SCC4<-5ft->Inv1<-50ft->AGS

All network cable is cat6a. The short cables are FTP (foil overall shielding, no individual pair shielding), have stranded 22 gauge conductors for the pairs, and are factory cut / assembled. Cables 2 Go. The long cable to the AGS is SSTP (braided outer shield, foil shield around individual pairs), has stranded 24 gauge conductors for the pairs, and has a DIY-prepared head on one side (cut from a 100ft coil).

I think the charge controllers are power independent on the network - they neither produce or consume power over the ethernet. SCP and AGS are definitely inverter-dependent leeches.

The network-related low voltage is the only part of the installation that is DIY by me. James called in sombody to help with the low voltage from the AGS to the generator. I also did the design/engineering and the plans to SRP. James did the racking, panels, and the electrical work (with two helpers). Trever did the customizations to the GS2000 shed for the generator and the LifeTime X-Large Deck Boxes for the batteries (fans, vents).

YehoshuaAgapao · March 2013

Re: Surrette S-530 batteries small fraction of capacity

The specific gravity of my batteries is improving. I left absorption at 58.8V while I was in Spokane last week. Getting readings of 1260. Measured 2PM today. I'll try to measure at the end of absorption tomorrow.

Current settings:
Equalize: 64V (flooded default; Surrete manual is 60-64)
Absorb/Bulk: 58.8V (higher than default and Surrette manual of 57.6V)
Float: 52.5V (lower than flooded default, at Surrette manual)
ReCharge: 50.0V (default)
AbsorbTime: 180min (default)

I love the EZ-Red hydrometer. It is so much easier to use than the Deka.

NorthGuy · March 2013

Re: Surrette S-530 batteries small fraction of capacity

YehoshuaAgapao wrote: »

Haven't had any network issues with the charge controllers falling off the network. The AGS does fall off the network briefly an average of once every other day.

This is my network chain:

XWConfig<-5ft->SCP<-3ft->SCC1<-3ft->SCC2<-3ft->SCC3<-3ft->SCC4<-5ft->Inv1<-50ft->AGS

Thank you Yehoshua.

That would be 8 devices. That's a huge XanBus network. Even if I add two more SCCs, I'll still have only 6.

YehoshuaAgapao wrote: »

I think the charge controllers are power independent on the network - they neither produce or consume power over the ethernet.

They might. I tried to look it up in the docs, but I haven't found any information.

YehoshuaAgapao wrote: »

SCP and AGS are definitely inverter-dependent leeches.

These two do not have any other power source, so they need power not only for network communications, but they completely power themselves from network, including big display on SCP. I suspect SCP draws more than 200mA (3W).

Surrette S-530 batteries small fraction of capacity

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