NewStats: 3,264,429 , 8,183,704 topics. Date: Wednesday, 11 June 2025 at 05:09 AM 3sl1y

icjunior:


Thank you for coming through boss!!!!!
I really appreciate.

I greet you boss🙌

Jefferyzz:
Cheapest is 90-100k

osalobua. I Don Chook hand for Weytin my power no carry

Drgreatone:

What happened to the smk? What was the setup like with it in of protective devices/s seeing as its just the inverter that got bad and needs replacement from ur submission. That wud help in advising u further.

SMK inverters are bad. A friend bought two and the two had problems in months.

adrusa:


SMK inverters are bad. A friend bought two and the two had problems in months.

true talk. don't go near it

Hi House.
My charge controller drops from 5 bar ( 13.6 volts ) to 3bar ( 12.4 volts ) after full charge on a load of 150 watts within 2 minutes.

What could be the issue ? Setup was done a week ago.

Note had to charge with external intelligent 20amps charger to full bar.

This is my set up :
1. 2 x 335 watt GCL in series
2. 60 amp PWM Charge controller
3. 220amps Caesar tubular Battery
4. 1KVA MSW Inverter

The main issue is the battery dropping from 5 bar to 3 bar on the charge controller with 2 minutes once load is applied on the the battery.

amicdan:
Hi House.
My charge controller drops from 5 bar ( 13.6 volts ) to 3bar ( 12.4 volts ) after full charge on a load of 150 watts.
What could be the issue ? Setup was done a week ago.

Note had to charge with external intelligent 20amps charger to full bar.

This is my set up :

1. 2 x 335 watt GCL in series
2. 60 amp PWM Charge controller
3. 220amps Caesar tubular Battery
4. 1KVA MSW Inverter

When using a PWM controller, for a 12v system, ideally your s should not go beyond 200w per module except the distance from PV to your controller is very far.

If you want more power, then you parallel more s of same range and make proper cable provisions for minimal voltage drop before power gets to the battery.

Recommendation:

1. Buy an MPPT controller
2. Change your s to 200w units and parallel them, then sell of the 335w modules
3. Buy more 335w modules and parallel with existing units.

Note that apart from the total load on your system, in this case 150w, how long you run this load(s) on the battery and time of day also matters aka load profile.

My big ogas bigrovar, niyi I can't recall other names now, and anybody with useful advice.

Please has anybody used a 3 phase, 50kva that can be paralleled?

I'ld appreciate some recommendations.

amicdan:
Hi House.
My charge controller drops from 5 bar ( 13.6 volts ) to 3bar ( 12.4 volts ) after full charge on a load of 150 watts.
What could be the issue ? Setup was done a week ago.

Note had to charge with external intelligent 20amps charger to full bar.

This is my set up :
1. 2 x 335 watt GCL in series
2. 60 amp PWM Charge controller
3. 220amps Caesar tubular Battery
4. 1KVA MSW Inverter

You installed your self right?
Just Get an MPPT controller to solve this issue.

Drgreatone:

What happened to the smk? What was the setup like with it in of protective devices/s seeing as its just the inverter that got bad and needs replacement from ur submission. That wud help in advising u further.

Boss, are you still using your SMS Sunmate Inverter, how's the performance like?

adrusa:


SMK inverters are bad. A friend bought two and the two had problems in months.

Agreed, one top here wrote years ago that it doesn't charge with Generator.

I still need 24v transformer based inverter

luvlyoracle:
I still need 24v transformer based inverter

How many kva

Obnoxious2001:

How many kva

1.5kva

adrusa:


SMK inverters are bad. A friend bought two and the two had problems in months.

So sorry? Didnt warranty cover for it

TechGeek777:


Boss, are you still using your SMS Sunmate Inverter, how's the performance like?

Still running it through its paces and so far so good. Only issue i have is it's slow charging via solar when load is on. Doesnt do so with NEPA

Drgreatone:

Still running it through its paces and so far so good. Only issue i have is it's slow charging via solar when load is on. Doesnt do so with NEPA

What's capacity of s connected to it, the VOC of each and how many s did you connect in series?

Obnoxious2001:

I greet you boss🙌

I got over 91% yield from the s
(871w from 2*475w jinko s)
Thanks for the powmr cc @linnov8

Thanks boss. Had to edit my post for more clarity.

The issue I am having is that the battery drop from 5 bars ( Full charge ) to 3 bars after 2 minutes or less on any load no matter how small, then remains on on 3 bar for like 3 hours before I power down the setup.

Trippledots:


When using a PWM controller, for a 12v system, ideally your s should not go beyond 200w per module except the distance from PV to your controller is very far.

If you want more power, then you parallel more s of same range and make proper cable provisions for minimal voltage drop before power gets to the battery.

Recommendation:

1. Buy an MPPT controller
2. Change your s to 200w units and parallel them, then sell of the 335w modules
3. Buy more 335w modules and parallel with existing units.

Note that apart from the total load on your system, in this case 150w, how long you run this load(s) on the battery and time of day also matters aka load profile.

Dam5reey:


You installed your self right?
Just Get an MPPT controller to solve this issue.

No bro, installer is out of town.

Trippledots:


When using a PWM controller, for a 12v system, ideally your s should not go beyond 200w per module except the distance from PV to your controller is very far.

If you want more power, then you parallel more s of same range and make proper cable provisions for minimal voltage drop before power gets to the battery.

Recommendation:

1. Buy an MPPT controller
2. Change your s to 200w units and parallel them, then sell of the 335w modules
3. Buy more 335w modules and parallel with existing units.

Note that apart from the total load on your system, in this case 150w, how long you run this load(s) on the battery and time of day also matters aka load profile.

Bassdow said 300w pv is good for pmw cc, even when I argued.
People that do not have sufficient knowledge about RE must be very careful with some information derived from this forum as most of them are misleading.....
I see no reason we should not adopt universal rules here.

Ijeoma660:


Please send me a pm

Check your pm.. sent a message since

amicdan:
Thanks boss. Had to edit my post for more clarity.

The issue I am having is that the battery drop from 5 bars ( Full charge ) to 3 bars after 2 minutes or less on any load no matter how small, then remains on on 3 bar for like 3 hours before I power down the setup.

Ok, My recommendation is still the same. Or do you want to go and buy another battery?

isangjohnson:

Bassdow said 300w pv is good for pmw cc, even when I argued.
People that do not have sufficient knowledge about RE must be very careful with some information derived from this forum as most of them are misleading.....
I see no reason we should not adopt universal rules here.

I try to avoid arguments as much as possible...works for me alot.🙂

icjunior:


I got over 91% yield from the s
(871w from 2*475w jinko s)
Thanks for the powmr cc @linnov8

So what was the problem, and how did you solve it? So that others can learn.

Good Day my bosses.
What is the best series or parallel combination for my pv.
I have 2 ploy 300w s.
2 mono 280w s.
1 300w mono .
Will be adding 4 300w mono s in a couple of days.
Is the 3s3p or all parallel combo best for me.
Thanks.

Trippledots:


So what was the problem, and how did you solve it? So that others can learn.

Someone on here guided me to disconnect the PV wires and battery wires from the cc and reconnect again,and edit the level of battery charging on the cc(can't the exact settings).

That was what we did and everything is working fine now.

TechGeek777:


What's capacity of s connected to it, the VOC of each and how many s did you connect in series?

3 300watts , VOC is abt 39v all connected in series. Max I av gotten with it is abt 350watts. (Max amps like 3 to 3.5 from Isc of abt 9 and Volt is abt 110v). Feel I should be getting better yield though but guess that's the system limitation

icjunior:


Someone on here guided me to disconnect the PV wires and battery wires from the cc and reconnect again,and edit the level of battery charging on the cc(can't the exact settings).

That was what we did and everything is working fine now.

Awesome

emmaniche:
Good Day my bosses.
What is the best series or parallel combination for my pv.
I have 2 ploy 300w s.
2 mono 280w s.
1 300w mono .
Will be adding 4 300w mono s in a couple of days.
Is the 3s3p or all parallel combo best for me.
Thanks.

You for allow your installer think for you oh.


Let me say this here, people that have browser internet and read all manner then to spend money more than people that agree they have less knowledge.

Like if you consult someone, you should give the person the allowance to work with his experience.
Clearly state your concerns and leave the remaining for the person

Drgreatone:

What happened to the smk? What was the setup like with it in of protective devices/s seeing as its just the inverter that got bad and needs replacement from ur submission. That wud help in advising u further.

Started showing code 20 on the display and wouldn't charge the battery.

isangjohnson:

Bassdow said 300w pv is good for pmw cc, even when I argued.
People that do not have sufficient knowledge about RE must be very careful with some information derived from this forum as most of them are misleading.....
I see no reason we should not adopt universal rules here.

Please where did you counter it ?

I want to go through the counter comment to be sure. Probably there's something you guys said I don't get.

My response was more along the line of if PWM charge controller would work for a 300W solar .

Don't forget, I have always often prefered MPPT to PWM charge controllers

isangjohnson:

Bassdow said 300w pv is good for pmw cc, even when I argued.
People that do not have sufficient knowledge about RE must be very careful with some information derived from this forum as most of them are misleading.....
I see no reason we should not adopt universal rules here.

wait Oooo, He's refering to a 12-volts system.

You see, my response was along the lines of "if 300Watts solar would work with PWM charge controller". Not the scenerio you posted above.