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Pwm behaving wonky

No, you'll get the Isc/amps at battery voltage... if the controller doesn't just burn up.
Excuse me ? Lsc ? , meaning it will only give me power at the 12v that my 2 soon to be revived batteries are ? And nobody really answered me about refilling distilled water, do I need to empty the fluid inside the batteries now or just add distilled water to the brim and plug the power I cables back in and hope for the best ?
 
Excuse me ? Lsc ? , meaning it will only give me power at the 12v that my 2 soon to be revived batteries are ? And nobody really answered me about refilling distilled water, do I need to empty the fluid inside the batteries now or just add distilled water to the brim and plug the power I cables back in and hope for the best ?
Read post #47
 
When you open the caps on top and look inside you'll see the tops of the plates. You want to add water until the plates are covered by about 3mm or so. It doesn't have to be exact to the 0.00000001mm in there.

The Isc on your panel is 9a, so with a PWM controller you'll only get 9a @ whatever your charging voltage is. So if your SCC is charging at 13v (example math here) then you'll only get 9a × 13v = 117w out of that panel.

If your battery is really dead and your SCC is charging at 12.5v then it's 12.5 × 9 = 112.5w.

Even if you had a 5000w panel on there, a PWM only gives you whatever the amperage rating of the panel is.

As for shopping options, Aliexpress will ship anywhere and has real MPPT controllers available.
 
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Thank you all and how do I bring my 2 batteries back to life (and since no one actually answered that question, can I assume that it isn't recommend ?) Pop open the caps on my batteries and top each hole with distilled water until the top ? Or empty it first ? And I think I'm supposed to give it a high charge to convert the water into acid.. but my battery charger won't really put out more than 10 amps......
 
Thank you all and how do I bring my 2 batteries back to life (and since no one actually answered that question, can I assume that it isn't recommend ?) Pop open the caps on my batteries and top each hole with distilled water until the top ? Or empty it first ? And I think I'm supposed to give it a high charge to convert the water into acid.. but my battery charger won't really put out more than 10 amps......

Pop to covers.
Do NOT empty the cells.
Top-up with distilled water to about 3mm over the plates.
Charge at whatever your charger will do, maybe start at 5A or so to be safe.

If your batteries still won't charge there's not much you can do :(

And you really do need a proper MPPT controller :)

EDIT Further information suggests these are sealed gel batteries, the above won't hep I'm afraid :(
 
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What a trainwreck
somewhere near the front it was established the batteries were "German" Gel
looking at the OP video confirms it, the top of the batteries are as smooth as Barbie and Ken's groin

I'm afraid of what happens next as the OP attempts to take the "caps" off his batteries
 
What a trainwreck
somewhere near the front it was established the batteries were "German" Gel
looking at the OP video confirms it, the top of the batteries are as smooth as Barbie and Ken's groin

I'm afraid of what happens next as the OP attempts to take the "caps" off his batteries

Yeah, all this talk of caps and stuff addled my brain, if they are actually sealed gel then then they're dead :(

PWM plus an over-sized panel has probably sent them into the next world :(

A slow charge might bring them back but ...
 
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Yeah, all this talk of caps and stuff addled my brain, if they are actually sealed gel then then they're dead :(

PWM plus an over-sized panel has probably sent them into the next world :(

A slow charge might bring them back but ...
Totally agree, however if the cathode inside the battery are crystalized, not much a slow charger can do.... However no harm in trying and I I have no idea how to add 3mm exactly....
 
1000011349.jpg

As suspected, holes for fluid, I know online to some of you it said lithium, but that is just the surface of some of the BS I have to tolerate when living in southeast Asia, I will not blame china and their "exaggerating" ways where a battery power bank can magically have 9999999999999 mAh . Or blame philippines either, they are capitalists after all, furthermore my battery charger had a "repair" option, could be wrong but I believe that sends a pulse that break up any crystalization on cathodes or anodes (crystalization? Build up basically) at the moment I see it pumping 14.5v and 12 amps
 
What a trainwreck
somewhere near the front it was established the batteries were "German" Gel
looking at the OP video confirms it, the top of the batteries are as smooth as Barbie and Ken's groin

I'm afraid of what happens next as the OP attempts to take the "caps" off his batteries
Sorry , on the battery it is WRITTEN Germany but FORD cars are USian cars right ? Built in India/Bharat however... These batteries are as likely to be German as I am to sing a duet with Justin Bieber....


I apologize if I sound narcissistic, but after 43 years on this earth and 15-20 years in the service... I've grown bitter
 
Repair function on the charger? Yes please!

Don't worry about exact measurements. As long as the plates are under watet and it's not spilling out the top you'll be good. Leave the caps loose when you go to do the repair charge so if there is any gassing it can vent off.
 
Repair function on the charger? Yes please!

Don't worry about exact measurements. As long as the plates are under watet and it's not spilling out the top you'll be good. Leave the caps loose when you go to do the repair charge so if there is any gassing it can vent off.
I did it before daylight so I couldn't see Inside the hole, so I just filled you the syringe to full which was ironically 6... Squeezed it halfway to each hole so I put I guess 3 cm ??? Hopefully that is 3 mm wtv that is, unless he meant 3 ml.... 👍 Well I used my electric fan on those 2 batteries until 1500 (3 pm) it's still daylight outside so I hope I was using wtv solar power was coming in, and not the electricity that I used to charge it with... I'll find out when I wake up before dawn and turn the inverter back on.. oh and the electric fan didn't just stop, the inverter started chiming like an angry vibrator
 
I did it before daylight so I couldn't see Inside the hole, so I just filled you the syringe to full which was ironically 6... Squeezed it halfway to each hole so I put I guess 3 cm ??? Hopefully that is 3 mm wtv that is, unless he meant 3 ml.... 👍 Well I used my electric fan on those 2 batteries until 1500 (3 pm) it's still daylight outside so I hope I was using wtv solar power was coming in, and not the electricity that I used to charge it with... I'll find out when I wake up before dawn and turn the inverter back on.. oh and the electric fan didn't just stop, the inverter started chiming like an angry vibrator
I put the black little black cap on and not the bigger plastic thing.. sorry I didn't see your message before I did that but wouldn't letting anything (IE gas) escape be bad ??? I believe I should let wtv gets converted into gas go back to fluid after use....
 
Evaporation is normal, especially when cooking all the gunk off the plates, hence needing to add water occasionally and looking down those holes to make sure you have enough in there. You can't just guess how much you'll need, it's a distance estimate, not a volume estimate. Would a diagram help make that make sense?

images (1) (4).jpeg

When the water boils off the plates get exposed and grow funk while not being able to do any work. You want the caps loose or off so that water evaporating has somewhere to go and doesn't find the weak spot in the battery shell and come out there. 😉

When the water boils off the stuff that makes it into battery acid gets left behind and when you add water back in the stuff gets re-dissolved turning the water into electrolyte. That's normal, don't panic.

Let the repair cycle run, check your water and run it for another cycle just to make sure all your plates are super clean inside. Then charge it up all the way and give it another water check. Hopefully this process will get some capacity back and you can make the battery last longer.

You may want to seriously consider a LFP battery. Twice the capacity for half the weight, no maintenance, no fire risk like you see in Li-Ion batteries, much longer lifespan, better value per dollar over lead.
 
Evaporation is normal, especially when cooking all the gunk off the plates, hence needing to add water occasionally and looking down those holes to make sure you have enough in there. You can't just guess how much you'll need, it's a distance estimate, not a volume estimate. Would a diagram help make that make sense?

View attachment 273501

When the water boils off the plates get exposed and grow funk while not being able to do any work. You want the caps loose or off so that water evaporating has somewhere to go and doesn't find the weak spot in the battery shell and come out there. 😉

When the water boils off the stuff that makes it into battery acid gets left behind and when you add water back in the stuff gets re-dissolved turning the water into electrolyte. That's normal, don't panic.

Let the repair cycle run, check your water and run it for another cycle just to make sure all your plates are super clean inside. Then charge it up all the way and give it another water check. Hopefully this process will get some capacity back and you can make the battery last longer.

You may want to seriously consider a LFP battery. Twice the capacity for half the weight, no maintenance, no fire risk like you see in Li-Ion batteries, much longer lifespan, better value per dollar over lead.
Note that the electrolyte (battery acid) expands as the battery charges, so you''ll want to ensure the plates are at least just barely covered before starting charging, but not top them off until after they are fully charged, lest the electrolyte expands and overflows the cells.

The above is for Flooded batteries, no idea what happens with Gel cells, but gel cells don't have caps, so still no idea what you have.

Use a flashlight to see the level of electrolyte in your cells, don't just splash some water in at random and hope that's good enough. Obviously don't use a flame.
 
Woke up at 0500 ,5 am and ran my electric fan for not even 5 minutes.... and the inverter started beeping, will try again once I have sunlight to verify if the battery bank is actually receiving any power from the solar panel, I am confused.... And if the battery water I added yesterday is sufficient I will leave it be, unless you say otherwise..... And PS electric fan consumes 50-60 watts I've cut down on using the AC because 25 cents a kw is no laughing matter
 
Hhmmmm..... what was the battery voltage holding at after you ran the repair cycle?
12.09v this morning fan spun for 5 minutes, and during daylight time.. less than 2 minutes at this moment, 1 hour till noon voltage is 12.71v.. turned on the inverter, plugged in my tall standing fan and the inverter started beeping annoyingly, the fan didn't stop spinning until I turned the inverter off, Soo not enough water ????
 

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