first experence with victron smart solar 100/20

[frankz66]

Hello everyone , I bought a victron smart solar 100/20 that I connected via a fixed power supply of 61v 10 amperes (to simulate the photovoltaic panels) and 4 12v agm batteries in series for a total of 48v. This configuration me server only to charge the batteries and through a DC step down provide 12v to some devices. I work everything, but I have questions to ask about the victron's behavior.

I connected the victron via the app on my phone, set the parameters for agm, then :

Bulk 57, 60

Float 55, 20

tail current 1.0 ampere

I have laced the other default parameters , so the compensation deactivated ( I think it is equalization that for agm should not be activated ) .

Being from 2 days that I am trying , I noticed that the victron fails to go to 57.60 ( bulk ) or absorption , but already at 56.60 signals me that it is in bulk .

I have always used Epever and the behavior is different , that is, for example in epever if imposed the bulk at 57.60, it reaches the established tension.

I don’t want the batteries being connected charged, about 90% can affect this behavior?

I also noticed that the absorption phase is automatic , in fact the maximum limit is 4 hours , but when he deems appropriate goes float even after 1 hour , it depends on the circumstances unknown to me .

 

[Suijkerbuijk]

Difrence is that epever have a higher shutdown on the volts parameters.
Epever have a max volt disconnect.
So it can go higher than de bulk volts.

Victron do not and use the bulk for the max volts.
Now you need to know how bulk works

So some read stuff in the link
A charger ,mppt or dc to dc charger all works te same way .

The Battery Charging Stages - Defined. What are 3-stage, 6-stage, & 9-stage battery chargers? Let's find out!

What are 3-stage, 6-stage, & 9-stage battery charging? Let's find out! Our smallest battery charger, the 1.5A Intelligent Battery Charger is capable of charging and maintaining most standard 12V SLA or lead-acid type batteries. This charger is a 3-stage charger defined by these stages...

wagan.com

 

[KnobCountry]

61 isn't high enough. The 100/20 needs input voltage 5v higher than battery.

You are 3.4v higher.

 

[frankz66]

61 isn't high enough. The 100/20 needs input voltage 5v higher than battery.

You are 3.4v higher.

The battery is 48 v 52 v is in full charge

 

[frankz66]

61 isn't high enough. The 100/20 needs input voltage 5v higher than battery.

You are 3.4v higher.

My power charge is 61 v

 

[KnobCountry]

57.6+5=62.6

You asked why it wasn't hitting full bulk at 57.6

 

[frankz66]

Difrence is that epever have a higher shutdown on the volts parameters.
Epever have a max volt disconnect.
So it can go higher than de bulk volts.

Victron do not and use the bulk for the max volts.
Now you need to know how bulk works

So some read stuff in the link
A charger ,mppt or dc to dc charger all works te same way .

The Battery Charging Stages - Defined. What are 3-stage, 6-stage, & 9-stage battery chargers? Let's find out!

What are 3-stage, 6-stage, & 9-stage battery charging? Let's find out! Our smallest battery charger, the 1.5A Intelligent Battery Charger is capable of charging and maintaining most standard 12V SLA or lead-acid type batteries. This charger is a 3-stage charger defined by these stages...

wagan.com

Come

Difrence is that epever have a higher shutdown on the volts parameters.
Epever have a max volt disconnect.
So it can go higher than de bulk volts.

Victron do not and use the bulk for the max volts.
Now you need to know how bulk works

So some read stuff in the link
A charger ,mppt or dc to dc charger all works te same way .

The Battery Charging Stages - Defined. What are 3-stage, 6-stage, & 9-stage battery chargers? Let's find out!

What are 3-stage, 6-stage, & 9-stage battery charging? Let's find out! Our smallest battery charger, the 1.5A Intelligent Battery Charger is capable of charging and maintaining most standard 12V SLA or lead-acid type batteries. This charger is a 3-stage charger defined by these stages...

wagan.com

c

Difrence is that epever have a higher shutdown on the volts parameters.
Epever have a max volt disconnect.
So it can go higher than de bulk volts.

Victron do not and use the bulk for the max volts.
Now you need to know how bulk works

So some read stuff in the link
A charger ,mppt or dc to dc charger all works te same way .

The Battery Charging Stages - Defined. What are 3-stage, 6-stage, & 9-stage battery chargers? Let's find out!

What are 3-stage, 6-stage, & 9-stage battery charging? Let's find out! Our smallest battery charger, the 1.5A Intelligent Battery Charger is capable of charging and maintaining most standard 12V SLA or lead-acid type batteries. This charger is a 3-stage charger defined by these stages...

wagan.com

So is it normal that I saw 56, 6 v? How does the mass in victron work to calculate the voltage?

 

[frankz66]

57.6+5=62.6

Ok so being 61 it's a little more than volts

 

[Suijkerbuijk]

So is it normal that I saw 56, 6 v? How does the mass in victron work to calculate the voltage?

That sent support mail to victron .
How that systeem works.
But i think its more easy .
If battery is full 56.6v and the charger is 56.6 volts it stop charging .
Both way are the same volts .
So the charger go in to flow till the battery go under that flow volts (battery empty) and the charger Restart and go back to bulk.

You can read a lot of information by the Victron app .and with the demo function you can test nee stuff from Victron without have the hardware .

For the rest Victron have its own form new forum.

Victron Community

victron.discourse.group

Old forum for old information.

All Posts - VictronEnergy

community.victronenergy.com

Reason new forum for people like to know.

https://community.victronenergy.com/questions/333061/victron-community-has-moved-to-victrondiscoursegro.html

 

[frankz66]

That sent support mail to victron .
How that systeem works.
But i think its more easy .
If battery is full 56.6v and the charger is 56.6 volts it stop charging .
Both way are the same volts .
So the charger go in to flow till the battery go under that flow volts (battery empty) and the charger Restart and go back to bulk.

You can read a lot of information by the Victron app .and with the demo function you can test nee stuff from Victron without have the hardware .

For the rest Victron have its own form new forum.

Thanks I had already seen the simulator. But do you agree that you need 5 v more pv voltage to charge at 57.60 v? I don't want to doubt what I was answered, but have a second opinion.

 

[mikefitz]

5 v more pv voltage to charge

5 volts more than battery to start the charge process. The charge process will continue provided the PV volts are higher than battery volts plus 1 volt. If at any time PV falls below battery volts +1, the charger will stop charging. The charger will restart when PV volts is higher than battery volts +5 .
Note for default AGM charge settings, Victron use temperature compensated charge values. At high temperatures charge voltage will be reduced.
When discussing Victron settings, the charge voltage, absorbtion volts is the same as Epever 'boost' volts. It's the 'target' volts the charger attempts to reach during the 'bulk' stage of charging. There is no setting for 'bulk' volts. 'Bulk' volts will gradually increase during the bulk stage. When the battery volts becomes equal to absorbtion volts the bulk stage is completed.

 

[frankz66]

5 volts more than battery to start the charge process. The charge process will continue provided the PV volts are higher than battery volts plus 1 volt. If at any time PV falls below battery volts +1, the charger will stop charging. The charger will restart when PV volts is higher than battery volts +5 .
Note for default AGM charge settings, Victron use temperature compensated charge values. At high temperatures charge voltage will be reduced.
When discussing Victron settings, the charge voltage, absorbtion volts is the same as Epever 'boost' volts. It's the 'target' volts the charger attempts to reach during the 'bulk' stage of charging. There is no setting for 'bulk' volts. 'Bulk' volts will gradually increase during the bulk stage. When the battery volts becomes equal to absorbtion volts the bulk stage is completed.

Thanks mike, cmq what I didn’t know and that had already been answered has clarified the phase of the boost. Being the power supply of 61.10 volts the maximum bulk charge will be about 56.60. I believe that this voltage can be enough, equval to 14,10 v for battery. I contacted the food retailer and maybe I can increase by 2 volts. I saw inside the circuit a trimmer that perhaps could be the one that re-bouls the output voltage. Thank you all for the information.

 

[Suijkerbuijk]

Thanks I had already seen the simulator. But do you agree that you need 5 v more pv voltage to charge at 57.60 v? I don't want to doubt what I was answered, but have a second opinion.

Yes .

You need 5volt different to start the mppt it self .
Means your default volts in the morning .
That is not your Float charger .
In the morning thare is no Float charger .

So your default volts is the volts that is the night .
After startup with the 5volts different the systeem go charger till it hits the float charge profile .
After that it only need 1 volts difrence to start again , the coils are charge and functio .

Reason. After the sun is down the mppt coil are not charge .
And the mppt use on that moment the battery to function.
Sun go up and the coil have to full and start the mppt .

A pwm systeem do not have this problem .
Its always start even if the volts are just 0.2volts difrence.
Reason that you see today new pwm charger with lifepo4 options.

 

[KnobCountry]

The victron mppt is designed to "hunt" for the most efficient power point between voltage and current.

Since you are providing it a steady 61v, it may cause some issues with the mppt algorithm and its ability to sweep. This could also impact its ability to fully bulk charge.

The victron manuals recommend AGAINST using a steady voltage supply like you are doing. They specifically claim it could cause damage to the mppt. Discussed here and in other places:

Thread 'A definitive answer about charging with a bench power supply through an MPPT controller.'

May 28, 2021

This has been discussed quite a bit before, but there were very few reporting back as to what happened.

I have a Victron 100/30, and two Hanmatek 310 (32v, 10a) switching bench power supplies. My battery is a 12 volt Lifepo4, and I can charge at 20 amps total, using both supplies. I figured I could use the PSU @30 volts to charge through the MPPP at closer to 30 amps, while using the other PSU at 10 amps directly into the battery, 40a total, rather than 20a, much faster.

I plugged my PSU I to the Victron set at 30 volts, 10 amps, and had the victron set for 10 amps max battery charging...

• A.Justice
• Replies: 4
• Forum: Solar Charge Controllers

F

Thread 'AC to DC Power Supply Feeding Victron MPPT Controller'

Oct 30, 2022

Question: Will feeding power to a Victron MPPT solar Charge controller from an AC to DC power supply damage either: (i) the controller or, (ii) the power supply?

My Components:
1. Meanwell AC to DC variable power supply (13.5v to 18v) maximum rated current 33.4A
2. Victron SmartSolar MPPT 100/50
3. 280A Lifepo4 12v battery

I currently shore charge my batteries by feeding power to a programable Bogart 30A PWM charge controller with the above Meanwell power supply. This saves me from having to buy a separate multi stage shore power charger when solar is not available. Bogart recommends...

• featherlite
• Replies: 10
• Forum: Solar Charge Controllers

 

[frankz66]

The victron mppt is designed to "hunt" for the most efficient power point between voltage and current.

Since you are providing it a steady 61v, it may cause some issues with the mppt algorithm and its ability to sweep. This could also impact its ability to fully bulk charge.

The victron manuals recommend AGAINST using a steady voltage supply like you are doing. They specifically claim it could cause damage to the mppt. Discussed here and in other places:

Thread 'A definitive answer about charging with a bench power supply through an MPPT controller.'

May 28, 2021

This has been discussed quite a bit before, but there were very few reporting back as to what happened.

I have a Victron 100/30, and two Hanmatek 310 (32v, 10a) switching bench power supplies. My battery is a 12 volt Lifepo4, and I can charge at 20 amps total, using both supplies. I figured I could use the PSU @30 volts to charge through the MPPP at closer to 30 amps, while using the other PSU at 10 amps directly into the battery, 40a total, rather than 20a, much faster.

I plugged my PSU I to the Victron set at 30 volts, 10 amps, and had the victron set for 10 amps max battery charging...

• A.Justice
• Replies: 4
• Forum: Solar Charge Controllers

F

Thread 'AC to DC Power Supply Feeding Victron MPPT Controller'

Oct 30, 2022

Question: Will feeding power to a Victron MPPT solar Charge controller from an AC to DC power supply damage either: (i) the controller or, (ii) the power supply?

My Components:
1. Meanwell AC to DC variable power supply (13.5v to 18v) maximum rated current 33.4A
2. Victron SmartSolar MPPT 100/50
3. 280A Lifepo4 12v battery

I currently shore charge my batteries by feeding power to a programable Bogart 30A PWM charge controller with the above Meanwell power supply. This saves me from having to buy a separate multi stage shore power charger when solar is not available. Bogart recommends...

• featherlite
• Replies: 10
• Forum: Solar Charge Controllers

What bad news. So from what you wrote will it fail sooner or later? in these few days I have seen that it works without problems, on the third day the batteries were slightly discharged and the power supply delivered up to 500 w. What do you recommend?

 

[Suijkerbuijk]

What bad news. So from what you wrote will it fail sooner or later? in these few days I have seen that it works without problems, on the third day the batteries were slightly discharged and the power supply delivered up to 500 w. What do you recommend?

Not use a mppt like that .
Than again if run not optimal but a lot of test are done like that even by Victron them self.

So for test not a big problem.
The best thing is use a charger for it

Amazon.com

Somting like that for lifepo4.

Let me see if i can find one for lead
And here it is model for lead battery

Amazon.com

Personal if it works it works

 

[KnobCountry]

What bad news. So from what you wrote will it fail sooner or later? in these few days I have seen that it works without problems, on the third day the batteries were slightly discharged and the power supply delivered up to 500 w. What do you recommend?

I assume the bench power supply is for testing and you would put the mppt on a solar array?

 

[frankz66]

I assume the bench power supply is for testing and you would put the mppt on a solar array?

No the power supply is used to give voltage. to the victron to charge these backup batteries .
To understand the scheme I will train the plant.