Evan, when you first started your solar channel, I thought to myself, you’ll run out of material to create good videos. Boy, was I wrong! This is such good information to have and archive for future use. Thank you so much for sharing! Congrats to Neil too. That was very kind of you. Have a blest Thanksgiving!
Thank you. Evan, for making the rest of us aware several options of available equipment. It saves the rest of us a lot of time and money in making a decision on what might work for our application.
I used a cable for that came with a server rack battery for battery communication. It should have been the right cable. I just cut out pins 3 and 6 to defeat the estop function.
Interesting. I would think the battery interconnect communications cable would be a crossover. But you will need to check out the jack's pinout. can not put Tx to Tx and Rx to Rx.
I came here to say this. It "should" be a crossover cable, but it may not be because of the difference in manufacturers. If a crossover cable fails you will need to make a custom cable that connects the shutdown TX on battery 1 to the shutdown RX on battery 2, the shutdown RX on battery 1 to the shutdown TX on battery 2, and so on for the other wires. Communication buss architecture is TX1 ‐> RX2 and TX2 -> RX1. It may also be unable to determine what battery is the master and trips. Try making the new battery the master and the EG4 the secondary.
The cable that was modified was a cable for interbattery communication that came with a server rack battery. So it should be the correct cable. I just removed pins 3 and 6 for the emergency stop. But still no communication.
Thank you for another great video Evan. Can you do one on the all the grounding (solar panels, batteries, inverters, breaker boxes) hitting on National code? Are you using lightning arresters? Will you be doing a larger ground mounted system? That server rack is mobile, is there a plug that would match the server rack’s max rail amps (600amps)?
0:26 why. Who should pay for this regulation? Why not based on state. Because there is no snow in Hawaii But Hawaii has the highest electricity prices in the USA. And solar energy is cheap . And also if it rains outside, it can corrode due to sea water vapor.
With multiple brands and varying ages of a battery in a system as it grows, can you go over the quirks of charging and voltage swings when the batteries have different performances? What happens when one battery is at say 50% and another is 75% for instance?
You need to put a charger on the batteries till the all read 100% again. It may take several hours to get them all to match up again. But over time they will drift apart again. That will happen just from current sharing, even all the same brand and size batteries could drift apart.
@@CountryViewSolar-DIYProjects On the output side, how does a say 50% battery interact with the 75%? Is the higher % battery somehow back feeding the lower one? Or is the battery module somehow outputting the same voltage regardless of the battery state? Maybe I am not aware of how current sharing works.
@jonathanmcelravy8608 i think what Evan is saying is the inverter and batteries work together with the comm cables and through use if the batteries do not get fully charged, over time the SOT (state of charge) will drift apart. Ex. 6 batteries all the brand.... Batt. 1 94% Batt. 2 93% Batt. 3 91% Batt. 4 90% Batt. 5 94% Batt. 6 92% And they can grow farther apart in percentage over time until they are charged back up to 100%. The inverter takes care of that or a "chareverter" or a manual battery charger can do the same. With the example you gave it sounds like you are hooking up an additional battery to the system and you are wondering if the vast difference in charge is a problem and will it get solved automatically. The answer, from what I have noticed is yes, it will get solved over time and take care of itself. Somehow with the inverter and batteries talking and being used the inverter will do some magical algorithmic stuff inside it's little computer brain and charge them to the same capacity through solar/generator/grid power (which ever you have) I hope I have understood your question correctly and this helps. If I did not, then post again and we can figure it out. 😊
I need a step down transformer from 24 to 12v that can handle roughly 175amp draw from a 3000wat inverter I have the inverter is designed for 12v im wanting to set up a 24v battery bank. Do you know where I might find one.
If a user should accumulate a variety of batteries of different makes and models over time, can the inverter talk on both the CAN Bus and RS485 at the same time as required by different models of battery? Thx.
It does not appear that would work well. Ex. Ford, Chevy, dodge do not make same cars/trucks, they all do same thing, run drive stop, but try and buy parts or swap part between them and you run into problems. Yes, you can fabracobble something together and make it work, but it won't be as designed.
Evan I have my backup battery out in my garage for my solar. It has gone completely dead one year due to lack of sun on my solar panels. Would providing heat help with that? If so what would you recommend? I got ripped off on mine, I discovered you after I paid for my system. Thanks for any help!
First I would check the battery to see what voltage it reads. If it reads a few volts low, I would throw a battery charger on it and see if it charges back up. If it doesn't take a charge and it's a lithium battery, the BMS may have went bad.
Finally, someone demonstrated if this would work between batteries, thanks Evan.
Evan, when you first started your solar channel, I thought to myself, you’ll run out of material to create good videos. Boy, was I wrong! This is such good information to have and archive for future use. Thank you so much for sharing! Congrats to Neil too. That was very kind of you. Have a blest Thanksgiving!
I totally agree!! Excellent videos, Evan!!!
Thank you. Evan, for making the rest of us aware several options of available equipment. It saves the rest of us a lot of time and money in making a decision on what might work for our application.
Thanks Evan for taking us along on this review. Fred.
I agree that a breaker would be greatly appreciated, or even a prerequisite for purchase.
Evan the reason for exterior rack batteries is that typical homes don’t have proper Carbon Dioxide fire suppression systems.
Thanks Evan!
For giiggles and grins did you try a crossover ethernet cable for the inter-battery communication?
I used a cable for that came with a server rack battery for battery communication. It should have been the right cable. I just cut out pins 3 and 6 to defeat the estop function.
Are those bolts holding the battery cables down or are they studs with nuts?
Interesting. I would think the battery interconnect communications cable would be a crossover. But you will need to check out the jack's pinout. can not put Tx to Tx and Rx to Rx.
Crossover cable would be inline with networking. The other is do the batteries need a switch between them to avoid the battery communications?
@@jackg.1759 I still believe it"s still communications between two devicis
I came here to say this. It "should" be a crossover cable, but it may not be because of the difference in manufacturers. If a crossover cable fails you will need to make a custom cable that connects the shutdown TX on battery 1 to the shutdown RX on battery 2, the shutdown RX on battery 1 to the shutdown TX on battery 2, and so on for the other wires. Communication buss architecture is TX1 ‐> RX2 and TX2 -> RX1.
It may also be unable to determine what battery is the master and trips. Try making the new battery the master and the EG4 the secondary.
The cable that was modified was a cable for interbattery communication that came with a server rack battery. So it should be the correct cable. I just removed pins 3 and 6 for the emergency stop. But still no communication.
Thx
Thank you for another great video Evan.
Can you do one on the all the grounding (solar panels, batteries, inverters, breaker boxes) hitting on National code? Are you using lightning arresters? Will you be doing a larger ground mounted system? That server rack is mobile, is there a plug that would match the server rack’s max rail amps (600amps)?
He's so smart
Hi guys!
0:26 why. Who should pay for this regulation?
Why not based on state. Because there is no snow in Hawaii But Hawaii has the highest electricity prices in the USA. And solar energy is cheap . And also if it rains outside, it can corrode due to sea water vapor.
With multiple brands and varying ages of a battery in a system as it grows, can you go over the quirks of charging and voltage swings when the batteries have different performances? What happens when one battery is at say 50% and another is 75% for instance?
You need to put a charger on the batteries till the all read 100% again. It may take several hours to get them all to match up again. But over time they will drift apart again. That will happen just from current sharing, even all the same brand and size batteries could drift apart.
@@CountryViewSolar-DIYProjects On the output side, how does a say 50% battery interact with the 75%? Is the higher % battery somehow back feeding the lower one? Or is the battery module somehow outputting the same voltage regardless of the battery state?
Maybe I am not aware of how current sharing works.
@jonathanmcelravy8608 i think what Evan is saying is the inverter and batteries work together with the comm cables and through use if the batteries do not get fully charged, over time the SOT (state of charge) will drift apart. Ex. 6 batteries all the brand....
Batt. 1 94%
Batt. 2 93%
Batt. 3 91%
Batt. 4 90%
Batt. 5 94%
Batt. 6 92%
And they can grow farther apart in percentage over time until they are charged back up to 100%. The inverter takes care of that or a "chareverter" or a manual battery charger can do the same.
With the example you gave it sounds like you are hooking up an additional battery to the system and you are wondering if the vast difference in charge is a problem and will it get solved automatically. The answer, from what I have noticed is yes, it will get solved over time and take care of itself. Somehow with the inverter and batteries talking and being used the inverter will do some magical algorithmic stuff inside it's little computer brain and charge them to the same capacity through solar/generator/grid power (which ever you have)
I hope I have understood your question correctly and this helps. If I did not, then post again and we can figure it out. 😊
Thanks for another good video. All the best from north Texas.
I need a step down transformer from 24 to 12v that can handle roughly 175amp draw from a 3000wat inverter I have the inverter is designed for 12v im wanting to set up a 24v battery bank.
Do you know where I might find one.
Tranformers don't work on DC voltage . They work on AC voktage.
If a user should accumulate a variety of batteries of different makes and models over time, can the inverter talk on both the CAN Bus and RS485 at the same time as required by different models of battery? Thx.
I would suggest buying all the same brand battery. I am not sure if different brands can communicate with each other.
It does not appear that would work well. Ex. Ford, Chevy, dodge do not make same cars/trucks, they all do same thing, run drive stop, but try and buy parts or swap part between them and you run into problems. Yes, you can fabracobble something together and make it work, but it won't be as designed.
Evan I have my backup battery out in my garage for my solar. It has gone completely dead one year due to lack of sun on my solar panels. Would providing heat help with that? If so what would you recommend? I got ripped off on mine, I discovered you after I paid for my system. Thanks for any help!
First I would check the battery to see what voltage it reads. If it reads a few volts low, I would throw a battery charger on it and see if it charges back up. If it doesn't take a charge and it's a lithium battery, the BMS may have went bad.
Hello Evan
👍👍👍👍👍
Both batteries need to have the same baud rate before any comms will work
There is a selector switch for the baud rate. I tried both settings.