Sungoldpower TP6048 - WiFi & Idle Power Issues

[Over9000]

I made the updates. Currently it's showing 87.0% and 50.9V and pulling down 1047W @ 347.4V.

Regarding the Renogy shunt installation, how should I connect it given the complexity of my setup (4s @ 12 + 6p @ 48)? Where should I make the connections?

Edit: For some reason, 40 minutes later it says 86% at 50.8V but still pulling down 1kW. I will get the shunt on ASAP, but this makes zero sense. No load on it except for 43W from the AT&T 5G Home WiFi.

 

[42OhmsPA]

I made the updates. Currently it's showing 87.0% and 50.9V

that's why you need a shunt!

and pulling down 1047W @ 347.4V.

Regarding the Renogy shunt installation, how should I connect it given the complexity of my setup (4s @ 12 + 6p @ 48)? Where should I make the connections?

Share a photo of your setup so we can advise where to put the shunt. It should go somewhere between the main negative to the inverter.

Edit: For some reason, 40 minutes later it says 86% at 50.8V but still pulling down 1kW.

I will get the shunt on ASAP

, but this makes zero sense. No load on it except for 43W from the AT&T 5G Home WiFi.

Makes perfect sense, reread the thread.

 

[Over9000]

@42OhmsPA - Not sure where the thread addresses what I'm describing. I know I need the shunt - but I can't understand how after receiving 1kW over an hour that the readings (inaccurate as they are) would actually go down. How the hell? Even with its base usage of 150W + 43W from AT&T, I should have had a net positive of ~800Wh over that hour.

 

[42OhmsPA]

.... Currently it's showing 87.0% and 50.9V and pulling down 1047W @ 347.4V.

...

Edit: For some reason, 40 minutes later it says 86% at 50.8V but still pulling down 1kW. I will ...

but I can't understand how after receiving 1kW over an hour that the readings (inaccurate as they are) would actually go down. How the hell?

Your battery voltage dropped because your PV input dropped.... Install the shunt program it for your capacity, set it for 100% once your batteries all reach 56V.
Verify the accuracy of the shunt with a trusted accurate clamp meter.

 

[Crowz]

Also keep in mind the renogy shunt is not as accurate as the victron. Its decent but its not something I would bet on with as much as batteries cost.

Also for reliable remote management the solar assistant setup with the victron shunt works flawlessly. I have watched quite a few horror movies on youtube of people having problem with the renogy shunt and their controller for it.

 

[Over9000]

Also keep in mind the renogy shunt is not as accurate as the victron. Its decent but its not something I would bet on with as much as batteries cost.

Also for reliable remote management the solar assistant setup with the victron shunt works flawlessly. I have watched quite a few horror movies on youtube of people having problem with the renogy shunt and their controller for it.

I figure I give it a shot and if it fails, I'll sell it and get the other setup.

 

[Over9000]

Hey guys, if I bring all of my batteries home and hook them up the same way as my off-grid location, can I hook just my one 48V 18A AC to DC Charger and recharge them to 100% (when it turns off) and then consider that my start point for the shunt?

Or do I really need to separate all 10 batteries and charge them individually?

 

[Crowz]

Hey guys, if I bring all of my batteries home and hook them up the same way as my off-grid location, can I hook just my one 48V 18A AC to DC Charger and recharge them to 100% (when it turns off) and then consider that my start point for the shunt?

Or do I really need to separate all 10 batteries and charge them individually?

Nope you can't.

Yes you do need to do it that way

 

[Over9000]

Nope you can't.

Yes you do need to do it that way

Can you explain to be electrically why I can't? I'd like to understand.

 

[Over9000]

I figure if that's the way it will charge off the inverter, why not like that at Home using an AC to DC charger?

 

[Crowz]

Can you explain to be electrically why I can't? I'd like to understand.

Its the same reason a ton of people on the site have had issues when they buy new batteries and slap them into the existing battery bank and then have nightmares with the battery comms going bananas because the batteries are unbalanced charge wise.

12v (10% charged) + 12v (40% charged) + 12v (80% charged) + 12v (14% charged) = 48v

Now we go to charge these.

Putting 40 amps into them using your new charger. Voltages spikes up when battery #3 hits max charge and battery #3's bms turns off because its overcharged. Now our 48v battery is a 36v battery. Charger goes nuts because its out of its charge range.

That's scenario #1. There are many more.

It just doesn't work. If it did we would do it too since its a royal pain in the arse separating batteries to charge them in the first place.

 

[Crowz]

I figure if that's the way it will charge off the inverter, why not like that at Home using an AC to DC charger?

That's why your needing to charge them now with the ac to dc charger separated because it didn't charge correctly when hooked up to the inverter in the first place.

If you just needed to charge up a balanced bank then yes you could use the charger like your wanting to do.

But if they were balanced you wouldn't be asking about this. They are not balanced which is why your charging them separated in the first place right?

 

[Crowz]

This is also why you see people posting that you need to fully charge a new battery your going to add to your existing bank and then makes sure the existing bank is fully charged before connecting the now fully charged new battery to the existing battery bank.

 

[Over9000]

When I get to my setup, I'll measure the voltage on each battery and report back.

Right now I don't have a "balancer" on my system. Do I need one? How would that work if part of my system is 4s x 12V + 6p x 48V?

 

[Over9000]

48V Batteries: 49.02, 48.92, 48.98, 49.03, 48.96, 49.04

12V Batteries: 12.47, 12.12, 12.01, 12.31

 

[42OhmsPA]

48V Batteries: 49.02, 48.92, 48.98, 49.03, 48.96, 49.04

Damn near dead.

12V Batteries: 12.47, 12.12, 12.01, 12.31

Way out of balance and damn near dead, I suspect the cells within those packs are out of balance as well.

We've already covered what to do in the prior pages.

 

[Over9000]

Damn near dead.

Way out of balance and damn near dead, I suspect the cells within those packs are out of balance as well.

We've already covered what to do in the prior pages.

I'm recharging them one by one right now. I'll let you know what voltages they get to when "done".

Additionally, I don't have a "balancer" on my system. Do I need one? How would that work if part of my system is 4s x 12V + 6p x 48V?

 

[42OhmsPA]

I'm recharging them one by one right now. I'll let you know what voltages they get to when "done".

To what voltages and how many amps is your charger?

Additionally, I don't have a "balancer" on my system. Do I need one? How would that work if part of my system is 4s x 12V + 6p x 48V?

I'd install one on the 12V packs. I think they are referred to as equalizers.

You still haven't showed photos of your setup, unless I missed them.

 

[Over9000]

Any one have a recommended unit? Please consider the setup below:

 

[Over9000]

Did that picture help?

 

[Crowz]

I don't use balancers so no recommendations to give. Hopefully someone else will chime in for that.

 

[42OhmsPA]

Did that picture help?

No that's a diagram. A picture of the actual setup lets us spot potential problems. Helpushelpu

 

[Over9000]

No that's a diagram. A picture of the actual setup lets us spot potential problems. Helpushelpu

I don't have a picture to offer. Literally all of the batteries are sitting on a bench right now getting charged one-by-one.

The diagram I showed you is how they are wired.

 

[42OhmsPA]

I don't have a picture to offer. Literally all of the batteries are sitting on a bench right now getting charged one-by-one.

The diagram I showed you is how they are wired.

OK, share one once they are fully charged and wired back up.

 

[seneysolar]

Battery Balancer

I would put this on the 12v series batteries.

The 48v parallel pack shouldn't drift too far if charge parameters are fixed now.