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The resistor is a good idea

That sounds like a good approach, thanks!

Makes sense, I will try to match the voltages as closely as possible before connecting, and do so with everything turned off. Thanks!

I am preparing to add a second battery to my 48v system. The new battery will have its own BMS and breaker and will be connected the same bus bars as the other battery. How do I prevent power surge due to voltage differential between the two batteries when I close the breaker to place it in...

Ok, problem solved. I found out that the load percentage is the higher of the two phases. The inverter is rated at 3000w per phase, for a total of 6000w. My old dryer was using 5600 watts!! That is 2800 per line/phase. I had some other stuff running as well, so the highest of the two phases...

Good question. I am running on both outputs, using some 120v appliances and some 240v. All that seems to be working well.

No, it is 15000w surge and 6000w rated power. I do not have a link , but he model number is: EP33-6048 TLV

I just installed a new Must 6000W split phase, pure sign wave inverter. It seems to be working great, but I have noticed that the load percentage seems to be off. It gives a load percentage like to is set for a maximum of 3000W. Today I finally put a heavy load on the inverter: about 3400...

I worked!! I used your method to connect a regular 9V battery and it started right up. Thanks for your help!!

Awesome, that makes sense, I will give it a try! ?

Thanks for your reply, I could try to put somthing like that togather to test the BMS on the bench , but I am still confused on how to create that 5 volt difference across the P- and the B- while it is attached to the system. The battery is usually between 52 and 54 volts, and the controler only...

Thanks, I will definitely check for bad connections or bent pins. I am still trying to figure out how to turn the BMS on though. It requires a 5V differential across the BMS to turn on. The voltage needs to be 5 volts higher on the P- side than on the B- side. I cant figure out a way to do it...

I just fired up my new system, but I have had to bypass the BMS because I can not get it to turn on. The BMS is a Heltec B1A24S15P 150A model. Before powering up the system I was seeing a voltage drop through the BMS, from 53V at the batteries to 34V on the other side of the BMS. When I opened...

Thank you very much, this is perfect!!

I have the same BMS and i am looking for the instruction manual. Were you abel to get the manual from Heltec?

Here is the link: https://www.aliexpress.com/item/4000776885236.html?aff_platform=portals-tool&sk=_d8oaQqU&aff_trace_key=786b252f62394731ad9e55ca34aebe97-1609625528502-09420-_d8oaQqU&terminal_id=33f6b3ac153e4e98841c23804de7e517&tmLog=new_Detail I bought the 24S 1A 150A

Thank you very much!

snoobler, I posted an updated schematic below, could you take a look at it and let me know if i corrected the issues that you identified? Thanks in advance, I really appriciate your input!

Ok, I have revised the schematic based on the advise I have revcieved. Please take alook and let me know how this looks!! I added a shunt and a breaker and redirected my (-) wiring. I also changed my breaker amerage.

Thank you very much!! You have given me a lot to think about. I will make the changes on my schemantic and update the post.

Hi snoobler, thanks for your well thought out reply!! I will try to respond to your points and answer your questions. I have a lot to learn, so please forgive my ignorance. We are in Cochise County! I will look into a higher rated bridge connector. What is between the panels and the MPPT? I am...

I would appreciate your critique of my off-grid solar design pictured below. The system will generate 6400W, with 13.8 kWh LifePo4 storage and a 6000W split phase inverter. It will be a split system with separate 110/220VAC and 48VDC distribution panels and backup generator. I would especially...