NewStats: 3,261,615 , 8,174,517 topics. Date: Thursday, 29 May 2025 at 07:13 PM 61m2b

olujosh301:



I doubt, in damis review he was charging the battery at 60a(haisic 12v inverter) even though the recommended is 40a and maximum 75a. Check your pv breaker or inspect your cables

are the wires supposed to get hot during peak sunlight?

fuckboys:
are the wires supposed to get hot during peak sunlight?

it shouldnt

Gshems:
it shouldnt

it gets hot before the cc cuts off?

fuckboys:
it gets hot before the cc cuts off?

does ur previous setup have a smart bms on ur diy battery?

fuckboys:
it gets hot before the cc cuts off?

What cable size? What wattage, VOC, and configuration?

fuckboys:
it gets hot before the cc cuts off?

It's probably a fake copper 6mm cable which couldn't handle your current inflow from the . Your 6mm should not be hot

Get a secondary way to test the cc in another step up around your location before considering this my opinion stated below

Get a 4mm Coleman solid red/black cable and run it straight from to CC.

State your location, somebody might be around to help you out

brightk:


does ur previous setup have a smart bms on ur diy battery?

no it does not have a smart bms, someone is suggesting I change the breaker

bbally:


It's probably a fake copper 6mm cable which couldn't handle your current inflow from the . Your 6mm should not be hot

Get a secondary way to test the cc in another step up around your location before considering this my opinion stated below

Get a 4mm Coleman solid red/black cable and run it straight from to CC.

State your location, somebody might be around to help you out

Satelite Town , Amuwo-Odofin, lagos

HeavenlyBang:


What cable size? What wattage, VOC, and configuration?

6mm pv cable,
4pcs 420w Cworth s of 31.6v each connected in 2parallel series 2parallel . Specs of the

fuckboys:
6mm pv cable,
4pcs 420w Cworth s of 31.6v each connected in 2parallel series 2parallel . Specs of the

What is your controller to battery wire size?

One of the reasons I stayed stuck with Deye.

Dam5reey1:
Deye na better Soup oo..

Efficiency 97% DC to AC conversion stop wasting unnecessary power in conversion. Even 5kwh batteries will last very well.

1750/1800

If you have 5kwh batteries, this will mean you can use 4850wh on the AC side compared to most inverter with 87%, which gives on 4350wh.. a whole 500wh saved..

favouredbymercy:


What is your controller to battery wire size?

10mm tokunbo wire

Peterlove11:


About 97% .......This is impressive.
After seeing your post, had to check mine. Damn the difference opor.
Mine ranges from 83% to 90%. Poor at low loads but fair a bit when the load is more than 1kw.
I feel the most objective way to check for efficiency is to drain battery from full to LVD and see the cumulative DC energy(Kwh) converted by inverter to usable AC energy (kwh)

I will be doing that soonest.. but this Deye dey perform magic oo. Even the MPPT super efficient.. A very good Toy..

fuckboys:
no it does not have a smart bms, someone is suggesting I change the breaker

You can by the breaker to rule out a bad breaker option

jonescosmos:
One of the reasons I stayed stuck with Deye.

Very interesting something ooo
4800W + 4800W confirmed. Cause I saw 4800w briefly on a single String.

fuckboys:
10mm tokunbo wire

Confirm if your battery can accept charges from the grid?
Can you battery and inverter without cc been connected power your load?
This will help isolate where the problem lies

bbally:


Confirm if your battery can accept charges from the grid?
Can you battery and inverter without cc been connected power your load?
This will help isolate where the problem lies

the inverter doesn't charge the battery, it keeps saying mcb trip

fuckboys:
the inverter doesn't charge the battery, it keeps saying mcb trip

Your issue is between battery cable, mcb and battery. Most likely mcb. But since your cable gets hot, the root cause is undersized cable. Increase that 10mm

favouredbymercy:


Your issue is between battery cable, mcb and battery. Most likely mcb. But since your cable gets hot, the root cause is undersized cable. Increase that 10mm

I'm not sure but i went through the manual of the inverter, it doesn't more than 200ah battery,

It has just charging profiler of 50ah,100ah and 200ah .

But my new battery is 280ah. I guess that's why it's not charging, I'm not sure sha.

Pls going by the recent discussions here, what's the recommended for a 3kva 12v setup with 4kw battery and 60A CC

I'm considering 4 pcs 250w Trina or 2 pcs 550w Jinko

fuckboys:
I'm not sure but i went through the manual of the inverter, it doesn't more than 200ah battery,

It has just charging profiler of 50ah,100ah and 200ah .

But my new battery is 280ah. I guess that's why it's not charging, I'm not sure sha.

If your old battery is still with you, test it with it

fuckboys:
I'm not sure but i went through the manual of the inverter, it doesn't more than 200ah battery,

It has just charging profiler of 50ah,100ah and 200ah .

But my new battery is 280ah. I guess that's why it's not charging, I'm not sure sha.

What was the size of the old Batteries and if it's Lithium ion phosphate batteries..

It may be that your old batteries is not taking as much current as this new one.

I charged that batteries at 60A without issues.

Dam5reey1:


What was the size of the old Batteries and if it's Lithium ion phosphate batteries..

It may be that your old batteries is not taking as much current as this new one.

I charged that batteries at 60A without issues.

the old battery is 1.2kwh 100ah. Lifepo4

Yes the old battery doesn't take as much current as the new battery that's why I'm having all this issue.

I'll be changing my breakers to 100amps breakers tomorrow. The current one is 60amps.

fuckboys:
the old battery is 1.2kwh 100ah. Lifepo4

Yes the old battery doesn't take as much current as the new battery that's why I'm having all this issue.

I'll be changing my breakers to 100amps breakers tomorrow. The current one is 60amps.

náà your breaker dey Bleep up

fuckboys:
morning chief, please I have custom built lfp battery with the upper bigger terminals as the inverter or discharge ports, and the small bottom terminals as the charging ports like solar and chargers.

It's a 105ah battery capacity, can i add a cworth 100ah lfp battery to it in parallel to increase my capacity? Can they be compatible?

If yes, which of the terminals do I run the parallel connection from?

If this is the inverter you are using, there's is a likely hood that the Inverter has developed fault.

The "main trip" notification is probably when the inverter cannot sense input from utility.


For your battery, confirm there's output on the battery terminal.

If there's is output, try to discharge it and charge it again.

fuckboys:
6mm pv cable,
4pcs 420w Cworth s of 31.6v each connected in 2parallel series 2parallel . Specs of the

fuckboys:
just tire, how can I ascertain this? Battery still dey under warranty o.

1. Could be a runaway cell. Unfortunately no smart BMS to check individual cell voltages. Or anything battery related. Maybe test with another battery.

2. Could be wiring. 6mm from PVs should be fine even at 28A, as long as it's actually 6mm though. 10mm from cc to battery may not be adequate, though. 10mm is fine for up to ~ 50A, which is a max of about 700w in a 12v system. Check if cable is getting hot.

3. You could be going above that MPPT's max current. Heard it happens with some.
Take out one string and see if issues persist with just two s.

HeavenlyBang:




1. Could be a runaway cell. Unfortunately no smart BMS to check individual cell voltages. Or anything battery related. Maybe test with another battery.

2. Could be wiring. 6mm from PVs should be fine even at 28A, as long as it's actually 6mm though. 10mm from cc to battery may not be adequate, though. 10mm is fine for up to ~ 50A, which is a max of about 700w in a 12v system. Check if cable is getting hot.

3. You could be going above that MPPT's max current. Heard it happens with some.
Take out one string and see if issues persist with just two s.

what really baffles me is the controller goes as high as 800 plus watts on a 12v system.

I saw 800w watts today before it tripped off.

Obnoxious2001:


If this is the inverter you are using, there's is a likely hood that the Inverter has developed fault.

The "main trip" notification is probably when the inverter cannot sense input from utility.


For your battery, confirm there's output on the battery terminal.

If there's is output, try to discharge it and charge it again.

there is an output on the battery, no thats not the inverter I'm using, it's sukam falcon plus 1.5kva

fuckboys:
what really baffles me is the controller goes as high as 800 plus watts on a 12v system.

I saw 800w watts today before it tripped off.

More reason why you will only find 1000w on 12V Hybrid with 60A CC.

You have oversized the PV to X2 of the rated capacity at 12V

The battery just there to receive whatever comes from PV and CC.

Please who sells the original of this here?

fuckboys:
there is an output on the battery, no thats not the inverter I'm using, it's sukam falcon plus 1.5kva

Hi, I use your exact inverter too and the two occasions I've had the MCB Trip issue was an unusual power surge (from Nepa) so the inverter trips to protect itself. If I raise the trip at the back up it works after the current stabilizes.

I think your charge controller might be the issue too, I use an 80A mppt that can take 1040w but I have a 1185w PV array.. a little close to the specs.

If you check the trip at the back and is down u can try rai if it will come up