₦airaland Forum

kristien4:
So sending 60amps into a flooded battery before it reaches near full stage is good for the battery??

Drgreatone:
Being curious to know.. while using a 60amp CC with flooded batteries, does it send the whole 60amps into ur batteries while charging? If yes, wont that quickly damage the battery as a result of the high current?

HeavenlyBang:
VOC isn't much of an issue, as you can get past that with smart wiring.

SRNE's 3KVA hybrid for example, is capped at 1440W.

The popular Powmr 60A MPPT CC is capped at 1400W, even. How do people go about it?

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 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 panel 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.

isangjohnson:
Please I need review on this inverter.

Jefferyzz:
Stay away from yohako product. There are lots of substandard products under yohako umbrella, there no way u u can figure out the good one.
This features u mentioned is on growatt, powmr, felicity, srne etc n price is budget as well.

Saipro:
I apologise, if the science statement rubbed off you the wrong way. I come from all 3 backgrounds. I merely believe your readers come from all walks of life. This thread began as a way to be a compendium/resource for all things to support the FTA rave of the time. Along the way, it became about all things renewable energy and the FTA aspect was relegated to the background.

I'll simply state what I had in mind. Peukert's law. You were talking about power equivalents thus a comparison of 12V 400AH vs 24V 200AH vs 48V 100AH is apt, being the same stored energy quantity. I₁V₁ = I₂V₂ = I₃V₃. It means one could draw the same amount of energy at lower current, if you raise the nominal voltage. In practical applications, the amount of power each is capable of delivering differs, as energy drawn varies due to discharge inefficiencies (mostly as a result of the internal resistance of the batteries vis a vis a resultant heating too). As a result, higher voltage systems would often perform more efficiently, as the amount of energy drawn increases. In practice, the upper limit of continuous discharge in a 12V system is about 6kW, beyond which you stand a real risk of melting the battery terminals or creating weird fluxes in the electrolyte (if FLA). Most conventional chargers don't exceed 120A thus limiting charge to an 1.8kW max anyway.

The resistance of the cabling matters just as much. This is why cable diameter and transmission distance matter! Multi-stranded chosen as superior to single strand.

My intention was not to waste anyone's time.

ZIKEYBOY11:
What's your thoughts on Gel batteries everyone?
Good morning all.

temi4fash:
Is this applicable to GEL Batteries too?

Drgreatone:
Pls which would be more efficient charge wise? 4 150watts paired to a pwm or 2 300watss paired to a mppt charge controller for a 12v 200ah battery?

solareclips:
Please is it normal for a 24v tubular batteries that is 100% when there is sunlight or public utility but modestly after sunlight or public utility goes off, the power reduced to 85 or 75% , it will now depend on the loads before it will start to ho down.

abbeymighty:
Thank you, 2.5kva is mppt while 1.7 and 1kva are pwm

brightk:
try to reduce your charging current. Check ur present charging current

abbeymighty:
Please can anyone give me review on affripower 2.5 kva hybrid , i used it with 3.5kva generator but it does not charge and we hardly have public utility.

ZIKEYBOY11:
Hello house, I need advice on this setup.

I have a 5kva 48v Felicity hybrid inverter.
8 X 300W Solar panel.
4 X 12v 220ah battery.

According to the inverter specs, the PV input voltage range is 90V - 550V. While the Maximum input current is 15A.

My question is this, in what arrangements should the solar panels be ? All in series, or 4 series and 2 parallel? Or 2 series and 4 parallel?

Also, whoever has used Felicity hybrid inverters, please confirm what type of in-built charge controllers they have ?

Thank.

Obnoxious2001:
Why can't i go less.
Probably 3s2p

Obnoxious2001:
Inverter can take upto 450v dc

Dam5reey:
Hybrid are more efficient if you are using Grid and Solar to charge. It save your electricity bills if you are metered.
It will do the same job as a separate Controller.

Recommended charging current is like 20A for these set up. Which I believe your 2.7kwp is capable of.

Considering you have flooded battery.. only way to increase speed is increase the charging current.. you may have to top the water from time to time.

Dam5reey:
What's your definition of Non hybrid and Hybrid... ? Non hybrid- without internal Solar Charge controller, Hybrid- with Internal Solar Charge controller.

What's your current setup, how do you charge..

My own definition of Hybrid is that it has.
Solar Charge Controller inbuilt. In addition to the AC charger..
In essence the charging Algorithm is the same.

1. about Speed charging.. this depends on many factors.
What determines the speed is the current you are charging with.

Provide more details for further clarification

Trippledots:
Good evening guys. Please someone argued that tubular batteries do not emit gases anymore, that it was older technology issues which has been solved now. He is a coren, mnsce etc etc engineer.

Any one can corroborate his claims please?

oweniwe:
Someone that can afford 2,700w panels shouldn't have any problem buying the right size of charge controller except the system is a gift

mctfopt:
There are a few possible causes of your MPPT solar charge controller having some voltage at night:

*A reverse diode failure
The reverse diode is a component in the MPPT charge controller that prevents current from flowing back from the battery to the solar panels at night. If the reverse diode fails, current will flow back to the solar panels, which can cause the voltage to rise.


A wiring fault

If the wiring between the MPPT charge controller and the solar panels is faulty, it can cause current to flow back to the solar panels at night. This can also cause the voltage to rise.


Ambient light.


Even at night, there is usually some ambient light present. This light can be enough to generate a small amount of current in the solar panels, which can cause the voltage to rise.

To troubleshoot the problem, you can try the following steps:

1. Check the reverse diode for signs of failure. The reverse diode is usually located on the back of the MPPT charge controller. It is a small component with two leads. If the diode is blackened or cracked, it is likely failed.

2. Check the wiring between the MPPT charge controller and the solar panels for any faults. Make sure that all of the connections are tight and that there are no broken wires.

3. Measure the voltage at the solar panel terminals at night. If the voltage is higher than 0 volts, there is a problem.

If you have checked all of the above and you are still having problems, you may need to contact the manufacturer of the MPPT charge controller for further assistance.

Here are some additional tips to help prevent voltage problems at night:

Make sure that the MPPT charge controller is properly sized for your solar panel array. A charge controller that is too small will not be able to regulate the voltage properly.


Use high-quality wiring between the MPPT charge controller and the solar panels. Cheap wiring can be more prone to faults.


Install a blocking diode in series with the solar panels. This will prevent current from flowing back to the solar panels at night.


Shield the solar panels from ambient light. This will help to reduce the amount of current that is generated in the panels at night.

This last point is if you have so much time in your hands.

Hero2t:
You only need to enable it if you are using tubular batteries. What is your battery chemistry?