Charge Controller has cut off my LOAD for 2 days.

[stanly]

The battery status indicator is showing RED from the charge controller.
It has been 2 days, is this meant my battery is DEAD?!

[Mike90250]

Yep. get that battery on a charger quick, or you will loose it. After 24 hours, sulfation builds and hardens on the plates, reducing capacity.

What is your source feeding the charge controller ? That's what needs checking. If the source is good, then the controller is bad.

Most controllers need to see at least 10V at the battery, before their internals will start up.

[stanly]

I got a Solar Panel with 30wp.

and my battery is 12AH by right it should able to charge atleast 40-50% per day even not a sunny day.

From the charge controller indicator, the solar panel is under good status(power is in).

Hm~~~ I need to monitoring 2 more days, if the battery is dead...

How I know the battery is dead? It won't fill even the panel providing power?

[Mike90250]

Solar PV need direct sun to work, cloudy days don't count, that's why I have a generator, my 3KW array puts out about 200-300w on a cloudy day

A 30W panel, in the sun for 4 hours (10Am - 2pm) can produce
30 x .8 = 24 watts x 4 hours = 96 watt hours @ 15V recharge voltage = 6.4Ah

Because of losses in the controller and battery, it would take 3 days of full sun to recharge the battery.

Some controllers, if the battery is too low, won't even run.

I'm assuming your 30w panel, is a 18V design. If it's a 40V panel, you will get half the watts it was designed for.

[stanly]

"cloudy days don't count" ?!
but charge controller is indicator show the power is coming in, ya.

My PV is 12V only.

From my charge controller user manual, it show there the LOAD will only be reconnect when battery reached 12.6V(which is around 80%) meanwhile, all my LOAD will be cut and stop.

Hm~~ is this correct?

[Sunking]

"cloudy days don't count" ?!
but charge controller is indicator show the power is coming in, ya.

Yes but not enough to amount to anything

[Mike90250]

cloudy days don't count, that's why I have a generator, my 3KW array puts out about 200-300w on a cloudy day

If you have a 30 watt panel, I'd expect 2-3 watts off it, on a cloudy day.

[stanly]

my god.. that is too bad....

can I get a battery charger for my battery? 0_0

[stanly]

Based on the chart below,


and the spec from my charge controller manual

TECHNICAL INFORMATION
12Volt
Rated solar input 10A
Rated load 10A
25% Current overload 1 min.
Load disconnect 11.1V
Load re-connect 12.6V
Equalization voltage (10 minutes) 14.6V
Boost voltage (10 minutes) 14.4V
Float voltage 13.6V
Temp Comp. (mV/℃) -30mV
Temperature -35℃ to +55℃


If you noticed there
"Load disconnect 11.1V
Load re-connect 12.6V"

Is that meant 11.1V(10%) charge controller cut my LOAD and only will reconnect back my LOAD at 12.6V(100%)?

If that is true that meant, even the battery is charged 60% now charge controller will still wont reconnect?

[Sunking]

One little problem with SOC voltages. They are useless for operating batteries while either being charged or discharged. The only time SOC can be valid is when the batteries have been disconnected and rested for several hours. That is not practical in a working system

You can take a fully discharged battery, apply a C/10 charge current at it will almost instantly read 13 volts, but I promise you it is still a dead battery.

[stanly]

In short meant my charge controller will only reconnect my LOAD when it reached 12.6V(100%) right?